bcm47xx: Copy kernel from 5.10 to 5.15

Copy patches and configuration from kernel 5.10 to kernel 5.15 files. No
changes were done.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

35 files changed, 3441 insertions, 0 deletions

diff --git a/target/linux/bcm47xx/config-5.15 b/target/linux/bcm47xx/config-5.15
new file mode 100644
index 0000000000..31d6d1de39
--- /dev/null
+++ b/target/linux/bcm47xx/config-5.15
@@ -0,0 +1,214 @@
+CONFIG_ADM6996_PHY=y
+CONFIG_ARCH_BINFMT_ELF_STATE=y
+CONFIG_ARCH_CLOCKSOURCE_DATA=y
+CONFIG_ARCH_DISCARD_MEMBLOCK=y
+CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
+CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_MMAP_RND_BITS_MAX=15
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=15
+CONFIG_ARCH_SUPPORTS_UPROBES=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARCH_USE_BUILTIN_BSWAP=y
+CONFIG_ARCH_USE_QUEUED_RWLOCKS=y
+CONFIG_ARCH_USE_QUEUED_SPINLOCKS=y
+CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
+CONFIG_BCM47XX=y
+CONFIG_BCM47XX_BCMA=y
+CONFIG_BCM47XX_NVRAM=y
+CONFIG_BCM47XX_SPROM=y
+CONFIG_BCM47XX_SSB=y
+CONFIG_BCM47XX_WDT=y
+CONFIG_BCMA=y
+CONFIG_BCMA_BLOCKIO=y
+CONFIG_BCMA_DEBUG=y
+CONFIG_BCMA_DRIVER_GMAC_CMN=y
+CONFIG_BCMA_DRIVER_GPIO=y
+CONFIG_BCMA_DRIVER_MIPS=y
+CONFIG_BCMA_DRIVER_PCI=y
+CONFIG_BCMA_DRIVER_PCI_HOSTMODE=y
+CONFIG_BCMA_HOST_PCI=y
+CONFIG_BCMA_HOST_PCI_POSSIBLE=y
+CONFIG_BCMA_HOST_SOC=y
+CONFIG_BCMA_NFLASH=y
+CONFIG_BCMA_PFLASH=y
+CONFIG_BCMA_SFLASH=y
+# CONFIG_BGMAC_BCMA is not set
+CONFIG_BLK_MQ_PCI=y
+CONFIG_CEVT_R4K=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_CMDLINE="noinitrd console=ttyS0,115200"
+CONFIG_CMDLINE_BOOL=y
+# CONFIG_CMDLINE_OVERRIDE is not set
+# CONFIG_COMMON_CLK is not set
+CONFIG_COMPAT_32BIT_TIME=y
+# CONFIG_CPU_BMIPS is not set
+CONFIG_CPU_GENERIC_DUMP_TLB=y
+CONFIG_CPU_HAS_PREFETCH=y
+CONFIG_CPU_HAS_SYNC=y
+CONFIG_CPU_LITTLE_ENDIAN=y
+CONFIG_CPU_MIPS32=y
+CONFIG_CPU_MIPS32_R1=y
+# CONFIG_CPU_MIPS32_R2 is not set
+CONFIG_CPU_MIPSR1=y
+CONFIG_CPU_MIPSR2_IRQ_VI=y
+CONFIG_CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS=y
+CONFIG_CPU_R4K_CACHE_TLB=y
+CONFIG_CPU_R4K_FPU=y
+CONFIG_CPU_SUPPORTS_32BIT_KERNEL=y
+CONFIG_CPU_SUPPORTS_HIGHMEM=y
+CONFIG_CRYPTO_BLAKE2S=y
+CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_WORKQUEUE=y
+CONFIG_CSRC_R4K=y
+CONFIG_DMA_DIRECT_OPS=y
+CONFIG_DMA_NONCOHERENT=y
+CONFIG_DMA_NONCOHERENT_CACHE_SYNC=y
+CONFIG_DMA_NONCOHERENT_MMAP=y
+CONFIG_DMA_NONCOHERENT_OPS=y
+# CONFIG_EARLY_PRINTK is not set
+CONFIG_FIXED_PHY=y
+CONFIG_GENERIC_ATOMIC64=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CMOS_UPDATE=y
+CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_IRQ_CHIP=y
+CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_LIB_ASHLDI3=y
+CONFIG_GENERIC_LIB_ASHRDI3=y
+CONFIG_GENERIC_LIB_CMPDI2=y
+CONFIG_GENERIC_LIB_LSHRDI3=y
+CONFIG_GENERIC_LIB_UCMPDI2=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_SCHED_CLOCK=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GPIOLIB_IRQCHIP=y
+CONFIG_GPIO_WDT=y
+CONFIG_HANDLE_DOMAIN_IRQ=y
+CONFIG_HARDWARE_WATCHPOINTS=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT_MAP=y
+CONFIG_HAVE_ARCH_COMPILER_H=y
+CONFIG_HAVE_ARCH_JUMP_LABEL=y
+CONFIG_HAVE_ARCH_KGDB=y
+CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
+CONFIG_HAVE_ARCH_TRACEHOOK=y
+CONFIG_HAVE_CBPF_JIT=y
+CONFIG_HAVE_CONTEXT_TRACKING=y
+CONFIG_HAVE_COPY_THREAD_TLS=y
+CONFIG_HAVE_C_RECORDMCOUNT=y
+CONFIG_HAVE_DEBUG_KMEMLEAK=y
+CONFIG_HAVE_DEBUG_STACKOVERFLOW=y
+CONFIG_HAVE_DMA_CONTIGUOUS=y
+CONFIG_HAVE_DYNAMIC_FTRACE=y
+CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
+CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
+CONFIG_HAVE_FUNCTION_TRACER=y
+CONFIG_HAVE_GENERIC_DMA_COHERENT=y
+CONFIG_HAVE_IDE=y
+CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK=y
+CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
+CONFIG_HAVE_LATENCYTOP_SUPPORT=y
+CONFIG_HAVE_LD_DEAD_CODE_DATA_ELIMINATION=y
+CONFIG_HAVE_MEMBLOCK=y
+CONFIG_HAVE_MEMBLOCK_NODE_MAP=y
+CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
+CONFIG_HAVE_NET_DSA=y
+CONFIG_HAVE_OPROFILE=y
+CONFIG_HAVE_PERF_EVENTS=y
+CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
+CONFIG_HAVE_RSEQ=y
+CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
+CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
+CONFIG_HW_HAS_PCI=y
+CONFIG_HW_RANDOM=y
+CONFIG_HZ_PERIODIC=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_MIPS_CPU=y
+CONFIG_IRQ_WORK=y
+CONFIG_LEDS_GPIO_REGISTER=y
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+CONFIG_MDIO_BUS=y
+CONFIG_MDIO_DEVICE=y
+CONFIG_MEMFD_CREATE=y
+CONFIG_MIGRATION=y
+CONFIG_MIPS=y
+CONFIG_MIPS_ASID_BITS=8
+CONFIG_MIPS_ASID_SHIFT=0
+CONFIG_MIPS_CLOCK_VSYSCALL=y
+# CONFIG_MIPS_CMDLINE_BUILTIN_EXTEND is not set
+CONFIG_MIPS_CMDLINE_FROM_BOOTLOADER=y
+CONFIG_MIPS_L1_CACHE_SHIFT=5
+CONFIG_MODULES_USE_ELF_REL=y
+CONFIG_MTD_BCM47XXSFLASH=y
+CONFIG_MTD_BCM47XX_PARTS=y
+CONFIG_MTD_NAND_CORE=y
+CONFIG_MTD_RAW_NAND=y
+CONFIG_MTD_NAND_BCM47XXNFLASH=y
+CONFIG_MTD_NAND_BRCMNAND=y
+CONFIG_MTD_NAND_BRCMNAND_BCMA=y
+CONFIG_MTD_NAND_ECC=y
+CONFIG_MTD_PARSER_TRX=y
+CONFIG_MTD_PHYSMAP=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEED_PER_CPU_KM=y
+CONFIG_NO_EXCEPT_FILL=y
+CONFIG_NO_GENERIC_PCI_IOPORT_MAP=y
+# CONFIG_OF is not set
+CONFIG_PCI=y
+CONFIG_PCI_DISABLE_COMMON_QUIRKS=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_DRIVERS_LEGACY=y
+CONFIG_PERF_USE_VMALLOC=y
+CONFIG_PGTABLE_LEVELS=2
+CONFIG_PHYLIB=y
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SRCU=y
+CONFIG_SSB=y
+CONFIG_SSB_B43_PCI_BRIDGE=y
+CONFIG_SSB_BLOCKIO=y
+CONFIG_SSB_DRIVER_EXTIF=y
+CONFIG_SSB_DRIVER_GIGE=y
+CONFIG_SSB_DRIVER_GPIO=y
+CONFIG_SSB_DRIVER_MIPS=y
+CONFIG_SSB_DRIVER_PCICORE=y
+CONFIG_SSB_DRIVER_PCICORE_POSSIBLE=y
+CONFIG_SSB_EMBEDDED=y
+CONFIG_SSB_HOST_SOC=y
+CONFIG_SSB_PCICORE_HOSTMODE=y
+CONFIG_SSB_PCIHOST=y
+CONFIG_SSB_PCIHOST_POSSIBLE=y
+CONFIG_SSB_SERIAL=y
+CONFIG_SSB_SFLASH=y
+CONFIG_SSB_SPROM=y
+CONFIG_SWCONFIG=y
+CONFIG_SWCONFIG_B53=y
+# CONFIG_SWCONFIG_B53_MMAP_DRIVER is not set
+CONFIG_SWCONFIG_B53_PHY_DRIVER=y
+CONFIG_SWCONFIG_B53_PHY_FIXUP=y
+# CONFIG_SWCONFIG_B53_SRAB_DRIVER is not set
+CONFIG_SWPHY=y
+CONFIG_SYSCTL_EXCEPTION_TRACE=y
+CONFIG_SYS_HAS_CPU_BMIPS=y
+CONFIG_SYS_HAS_CPU_BMIPS32_3300=y
+CONFIG_SYS_HAS_CPU_MIPS32_R1=y
+CONFIG_SYS_HAS_CPU_MIPS32_R2=y
+CONFIG_SYS_HAS_EARLY_PRINTK=y
+CONFIG_SYS_SUPPORTS_32BIT_KERNEL=y
+CONFIG_SYS_SUPPORTS_ARBIT_HZ=y
+CONFIG_SYS_SUPPORTS_HIGHMEM=y
+CONFIG_SYS_SUPPORTS_LITTLE_ENDIAN=y
+CONFIG_SYS_SUPPORTS_MIPS16=y
+CONFIG_SYS_SUPPORTS_ZBOOT=y
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TINY_SRCU=y
+CONFIG_USB_SUPPORT=y
+CONFIG_USE_GENERIC_EARLY_PRINTK_8250=y
+CONFIG_WATCHDOG_CORE=y
diff --git a/target/linux/bcm47xx/patches-5.15/100-v5.18-mtd-rawnand-brcmnand-Assign-soc-as-early-as-possible.patch b/target/linux/bcm47xx/patches-5.15/100-v5.18-mtd-rawnand-brcmnand-Assign-soc-as-early-as-possible.patch
new file mode 100644
index 0000000000..8efda10809
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/100-v5.18-mtd-rawnand-brcmnand-Assign-soc-as-early-as-possible.patch
@@ -0,0 +1,33 @@
+From: Florian Fainelli <f.fainelli@gmail.com>
+Subject: [PATCH v3 1/9] mtd: rawnand: brcmnand: Assign soc as early as possible
+Date: Fri, 07 Jan 2022 10:46:06 -0800
+Content-Type: text/plain; charset="utf-8"
+
+In order to key off the brcmnand_probe() code in subsequent changes
+depending upon ctrl->soc, assign that variable as early as possible,
+instead of much later when we have checked that it is non-NULL.
+
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+---
+ drivers/mtd/nand/raw/brcmnand/brcmnand.c | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
++++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+@@ -2949,6 +2949,7 @@ int brcmnand_probe(struct platform_devic
+ 
+ 	dev_set_drvdata(dev, ctrl);
+ 	ctrl->dev = dev;
++	ctrl->soc = soc;
+ 
+ 	init_completion(&ctrl->done);
+ 	init_completion(&ctrl->dma_done);
+@@ -3089,8 +3090,6 @@ int brcmnand_probe(struct platform_devic
+ 	 * interesting ways
+ 	 */
+ 	if (soc) {
+-		ctrl->soc = soc;
+-
+ 		ret = devm_request_irq(dev, ctrl->irq, brcmnand_irq, 0,
+ 				       DRV_NAME, ctrl);
+ 
diff --git a/target/linux/bcm47xx/patches-5.15/101-v5.18-mtd-rawnand-brcmnand-Allow-SoC-to-provide-I-O-operations.patch b/target/linux/bcm47xx/patches-5.15/101-v5.18-mtd-rawnand-brcmnand-Allow-SoC-to-provide-I-O-operations.patch
new file mode 100644
index 0000000000..23f5df3015
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/101-v5.18-mtd-rawnand-brcmnand-Allow-SoC-to-provide-I-O-operations.patch
@@ -0,0 +1,150 @@
+From: Florian Fainelli <f.fainelli@gmail.com>
+Subject: [PATCH v3 2/9] mtd: rawnand: brcmnand: Allow SoC to provide I/O operations
+Date: Fri, 07 Jan 2022 10:46:07 -0800
+Content-Type: text/plain; charset="utf-8"
+
+Allow a brcmnand_soc instance to provide a custom set of I/O operations
+which we will require when using this driver on a BCMA bus which is not
+directly memory mapped I/O. Update the nand_{read,write}_reg accordingly
+to use the SoC operations if provided.
+
+To minimize the penalty on other SoCs which do support standard MMIO
+accesses, we use a static key which is disabled by default and gets
+enabled if a soc implementation does provide I/O operations.
+
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+---
+ drivers/mtd/nand/raw/brcmnand/brcmnand.c | 28 +++++++++++++++++++++--
+ drivers/mtd/nand/raw/brcmnand/brcmnand.h | 29 ++++++++++++++++++++++++
+ 2 files changed, 55 insertions(+), 2 deletions(-)
+
+--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
++++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+@@ -25,6 +25,7 @@
+ #include <linux/of.h>
+ #include <linux/of_platform.h>
+ #include <linux/slab.h>
++#include <linux/static_key.h>
+ #include <linux/list.h>
+ #include <linux/log2.h>
+ 
+@@ -207,6 +208,8 @@ enum {
+ 
+ struct brcmnand_host;
+ 
++static DEFINE_STATIC_KEY_FALSE(brcmnand_soc_has_ops_key);
++
+ struct brcmnand_controller {
+ 	struct device		*dev;
+ 	struct nand_controller	controller;
+@@ -589,15 +592,25 @@ enum {
+ 	INTFC_CTLR_READY		= BIT(31),
+ };
+ 
++static inline bool brcmnand_non_mmio_ops(struct brcmnand_controller *ctrl)
++{
++	return static_branch_unlikely(&brcmnand_soc_has_ops_key);
++}
++
+ static inline u32 nand_readreg(struct brcmnand_controller *ctrl, u32 offs)
+ {
++	if (brcmnand_non_mmio_ops(ctrl))
++		return brcmnand_soc_read(ctrl->soc, offs);
+ 	return brcmnand_readl(ctrl->nand_base + offs);
+ }
+ 
+ static inline void nand_writereg(struct brcmnand_controller *ctrl, u32 offs,
+ 				 u32 val)
+ {
+-	brcmnand_writel(val, ctrl->nand_base + offs);
++	if (brcmnand_non_mmio_ops(ctrl))
++		brcmnand_soc_write(ctrl->soc, val, offs);
++	else
++		brcmnand_writel(val, ctrl->nand_base + offs);
+ }
+ 
+ static int brcmnand_revision_init(struct brcmnand_controller *ctrl)
+@@ -763,13 +776,18 @@ static inline void brcmnand_rmw_reg(stru
+ 
+ static inline u32 brcmnand_read_fc(struct brcmnand_controller *ctrl, int word)
+ {
++	if (brcmnand_non_mmio_ops(ctrl))
++		return brcmnand_soc_read(ctrl->soc, BRCMNAND_NON_MMIO_FC_ADDR);
+ 	return __raw_readl(ctrl->nand_fc + word * 4);
+ }
+ 
+ static inline void brcmnand_write_fc(struct brcmnand_controller *ctrl,
+ 				     int word, u32 val)
+ {
+-	__raw_writel(val, ctrl->nand_fc + word * 4);
++	if (brcmnand_non_mmio_ops(ctrl))
++		brcmnand_soc_write(ctrl->soc, val, BRCMNAND_NON_MMIO_FC_ADDR);
++	else
++		__raw_writel(val, ctrl->nand_fc + word * 4);
+ }
+ 
+ static inline void edu_writel(struct brcmnand_controller *ctrl,
+@@ -2951,6 +2969,12 @@ int brcmnand_probe(struct platform_devic
+ 	ctrl->dev = dev;
+ 	ctrl->soc = soc;
+ 
++	/* Enable the static key if the soc provides I/O operations indicating
++	 * that a non-memory mapped IO access path must be used
++	 */
++	if (brcmnand_soc_has_ops(ctrl->soc))
++		static_branch_enable(&brcmnand_soc_has_ops_key);
++
+ 	init_completion(&ctrl->done);
+ 	init_completion(&ctrl->dma_done);
+ 	init_completion(&ctrl->edu_done);
+--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.h
++++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.h
+@@ -11,12 +11,25 @@
+ 
+ struct platform_device;
+ struct dev_pm_ops;
++struct brcmnand_io_ops;
++
++/* Special register offset constant to intercept a non-MMIO access
++ * to the flash cache register space. This is intentionally large
++ * not to overlap with an existing offset.
++ */
++#define BRCMNAND_NON_MMIO_FC_ADDR	0xffffffff
+ 
+ struct brcmnand_soc {
+ 	bool (*ctlrdy_ack)(struct brcmnand_soc *soc);
+ 	void (*ctlrdy_set_enabled)(struct brcmnand_soc *soc, bool en);
+ 	void (*prepare_data_bus)(struct brcmnand_soc *soc, bool prepare,
+ 				 bool is_param);
++	const struct brcmnand_io_ops *ops;
++};
++
++struct brcmnand_io_ops {
++	u32 (*read_reg)(struct brcmnand_soc *soc, u32 offset);
++	void (*write_reg)(struct brcmnand_soc *soc, u32 val, u32 offset);
+ };
+ 
+ static inline void brcmnand_soc_data_bus_prepare(struct brcmnand_soc *soc,
+@@ -58,6 +71,22 @@ static inline void brcmnand_writel(u32 v
+ 		writel_relaxed(val, addr);
+ }
+ 
++static inline bool brcmnand_soc_has_ops(struct brcmnand_soc *soc)
++{
++	return soc && soc->ops && soc->ops->read_reg && soc->ops->write_reg;
++}
++
++static inline u32 brcmnand_soc_read(struct brcmnand_soc *soc, u32 offset)
++{
++	return soc->ops->read_reg(soc, offset);
++}
++
++static inline void brcmnand_soc_write(struct brcmnand_soc *soc, u32 val,
++				      u32 offset)
++{
++	soc->ops->write_reg(soc, val, offset);
++}
++
+ int brcmnand_probe(struct platform_device *pdev, struct brcmnand_soc *soc);
+ int brcmnand_remove(struct platform_device *pdev);
+ 
diff --git a/target/linux/bcm47xx/patches-5.15/102-v5.18-mtd-rawnand-brcmnand-Avoid-pdev-in-brcmnand_init_cs.patch b/target/linux/bcm47xx/patches-5.15/102-v5.18-mtd-rawnand-brcmnand-Avoid-pdev-in-brcmnand_init_cs.patch
new file mode 100644
index 0000000000..d9324c2595
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/102-v5.18-mtd-rawnand-brcmnand-Avoid-pdev-in-brcmnand_init_cs.patch
@@ -0,0 +1,52 @@
+From: Florian Fainelli <f.fainelli@gmail.com>
+Subject: [PATCH v3 3/9] mtd: rawnand: brcmnand: Avoid pdev in brcmnand_init_cs()
+Date: Fri, 07 Jan 2022 10:46:08 -0800
+Content-Type: text/plain; charset="utf-8"
+
+In preparation for encapsulating more of what the loop calling
+brcmnand_init_cs() does, avoid using platform_device when it is the
+device behind platform_device that we are using for printing errors.
+
+No functional changes introduced.
+
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+---
+ drivers/mtd/nand/raw/brcmnand/brcmnand.c | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
++++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+@@ -2722,7 +2722,7 @@ static const struct nand_controller_ops
+ static int brcmnand_init_cs(struct brcmnand_host *host, struct device_node *dn)
+ {
+ 	struct brcmnand_controller *ctrl = host->ctrl;
+-	struct platform_device *pdev = host->pdev;
++	struct device *dev = ctrl->dev;
+ 	struct mtd_info *mtd;
+ 	struct nand_chip *chip;
+ 	int ret;
+@@ -2730,7 +2730,7 @@ static int brcmnand_init_cs(struct brcmn
+ 
+ 	ret = of_property_read_u32(dn, "reg", &host->cs);
+ 	if (ret) {
+-		dev_err(&pdev->dev, "can't get chip-select\n");
++		dev_err(dev, "can't get chip-select\n");
+ 		return -ENXIO;
+ 	}
+ 
+@@ -2739,13 +2739,13 @@ static int brcmnand_init_cs(struct brcmn
+ 
+ 	nand_set_flash_node(chip, dn);
+ 	nand_set_controller_data(chip, host);
+-	mtd->name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "brcmnand.%d",
++	mtd->name = devm_kasprintf(dev, GFP_KERNEL, "brcmnand.%d",
+ 				   host->cs);
+ 	if (!mtd->name)
+ 		return -ENOMEM;
+ 
+ 	mtd->owner = THIS_MODULE;
+-	mtd->dev.parent = &pdev->dev;
++	mtd->dev.parent = dev;
+ 
+ 	chip->legacy.cmd_ctrl = brcmnand_cmd_ctrl;
+ 	chip->legacy.cmdfunc = brcmnand_cmdfunc;
diff --git a/target/linux/bcm47xx/patches-5.15/103-v5.18-mtd-rawnand-brcmnand-Move-OF-operations-out-of-brcmnand_init_cs.patch b/target/linux/bcm47xx/patches-5.15/103-v5.18-mtd-rawnand-brcmnand-Move-OF-operations-out-of-brcmnand_init_cs.patch
new file mode 100644
index 0000000000..34fd1b47ea
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/103-v5.18-mtd-rawnand-brcmnand-Move-OF-operations-out-of-brcmnand_init_cs.patch
@@ -0,0 +1,63 @@
+From: Florian Fainelli <f.fainelli@gmail.com>
+Subject: [PATCH v3 4/9] mtd: rawnand: brcmnand: Move OF operations out of brcmnand_init_cs()
+Date: Fri, 07 Jan 2022 10:46:09 -0800
+Content-Type: text/plain; charset="utf-8"
+
+In order to initialize a given chip select object for use by the
+brcmnand driver, move all of the Device Tree specific routines outside
+of brcmnand_init_cs() in order to make it usable in a platform data
+configuration which will be necessary for supporting BCMA chips.
+
+No functional changes introduced.
+
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+---
+ drivers/mtd/nand/raw/brcmnand/brcmnand.c | 20 +++++++++++---------
+ 1 file changed, 11 insertions(+), 9 deletions(-)
+
+--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
++++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+@@ -2719,7 +2719,7 @@ static const struct nand_controller_ops
+ 	.attach_chip = brcmnand_attach_chip,
+ };
+ 
+-static int brcmnand_init_cs(struct brcmnand_host *host, struct device_node *dn)
++static int brcmnand_init_cs(struct brcmnand_host *host)
+ {
+ 	struct brcmnand_controller *ctrl = host->ctrl;
+ 	struct device *dev = ctrl->dev;
+@@ -2728,16 +2728,9 @@ static int brcmnand_init_cs(struct brcmn
+ 	int ret;
+ 	u16 cfg_offs;
+ 
+-	ret = of_property_read_u32(dn, "reg", &host->cs);
+-	if (ret) {
+-		dev_err(dev, "can't get chip-select\n");
+-		return -ENXIO;
+-	}
+-
+ 	mtd = nand_to_mtd(&host->chip);
+ 	chip = &host->chip;
+ 
+-	nand_set_flash_node(chip, dn);
+ 	nand_set_controller_data(chip, host);
+ 	mtd->name = devm_kasprintf(dev, GFP_KERNEL, "brcmnand.%d",
+ 				   host->cs);
+@@ -3144,7 +3137,16 @@ int brcmnand_probe(struct platform_devic
+ 			host->pdev = pdev;
+ 			host->ctrl = ctrl;
+ 
+-			ret = brcmnand_init_cs(host, child);
++			ret = of_property_read_u32(child, "reg", &host->cs);
++			if (ret) {
++				dev_err(dev, "can't get chip-select\n");
++				devm_kfree(dev, host);
++				continue;
++			}
++
++			nand_set_flash_node(&host->chip, child);
++
++			ret = brcmnand_init_cs(host);
+ 			if (ret) {
+ 				devm_kfree(dev, host);
+ 				continue; /* Try all chip-selects */
diff --git a/target/linux/bcm47xx/patches-5.15/104-v5.18-mtd-rawnand-brcmnand-Allow-working-without-interrupts.patch b/target/linux/bcm47xx/patches-5.15/104-v5.18-mtd-rawnand-brcmnand-Allow-working-without-interrupts.patch
new file mode 100644
index 0000000000..3a9d18fa21
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/104-v5.18-mtd-rawnand-brcmnand-Allow-working-without-interrupts.patch
@@ -0,0 +1,91 @@
+From: Florian Fainelli <f.fainelli@gmail.com>
+Subject: [PATCH v3 5/9] mtd: rawnand: brcmnand: Allow working without interrupts
+Date: Fri, 07 Jan 2022 10:46:10 -0800
+Content-Type: text/plain; charset="utf-8"
+
+The BCMA devices include the brcmnand controller but they do not wire up
+any interrupt line, allow the main interrupt to be optional and update
+the completion path to also check for the lack of an interrupt line.
+
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+---
+ drivers/mtd/nand/raw/brcmnand/brcmnand.c | 52 +++++++++++-------------
+ 1 file changed, 24 insertions(+), 28 deletions(-)
+
+--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
++++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+@@ -216,7 +216,7 @@ struct brcmnand_controller {
+ 	void __iomem		*nand_base;
+ 	void __iomem		*nand_fc; /* flash cache */
+ 	void __iomem		*flash_dma_base;
+-	unsigned int		irq;
++	int			irq;
+ 	unsigned int		dma_irq;
+ 	int			nand_version;
+ 
+@@ -1590,7 +1590,7 @@ static bool brcmstb_nand_wait_for_comple
+ 	bool err = false;
+ 	int sts;
+ 
+-	if (mtd->oops_panic_write) {
++	if (mtd->oops_panic_write || ctrl->irq < 0) {
+ 		/* switch to interrupt polling and PIO mode */
+ 		disable_ctrl_irqs(ctrl);
+ 		sts = bcmnand_ctrl_poll_status(ctrl, NAND_CTRL_RDY,
+@@ -3095,33 +3095,29 @@ int brcmnand_probe(struct platform_devic
+ 	}
+ 
+ 	/* IRQ */
+-	ctrl->irq = platform_get_irq(pdev, 0);
+-	if ((int)ctrl->irq < 0) {
+-		dev_err(dev, "no IRQ defined\n");
+-		ret = -ENODEV;
+-		goto err;
+-	}
+-
+-	/*
+-	 * Some SoCs integrate this controller (e.g., its interrupt bits) in
+-	 * interesting ways
+-	 */
+-	if (soc) {
+-		ret = devm_request_irq(dev, ctrl->irq, brcmnand_irq, 0,
+-				       DRV_NAME, ctrl);
+-
+-		/* Enable interrupt */
+-		ctrl->soc->ctlrdy_ack(ctrl->soc);
+-		ctrl->soc->ctlrdy_set_enabled(ctrl->soc, true);
+-	} else {
+-		/* Use standard interrupt infrastructure */
+-		ret = devm_request_irq(dev, ctrl->irq, brcmnand_ctlrdy_irq, 0,
+-				       DRV_NAME, ctrl);
+-	}
+-	if (ret < 0) {
+-		dev_err(dev, "can't allocate IRQ %d: error %d\n",
+-			ctrl->irq, ret);
+-		goto err;
++	ctrl->irq = platform_get_irq_optional(pdev, 0);
++	if (ctrl->irq > 0) {
++		/*
++		 * Some SoCs integrate this controller (e.g., its interrupt bits) in
++		 * interesting ways
++		 */
++		if (soc) {
++			ret = devm_request_irq(dev, ctrl->irq, brcmnand_irq, 0,
++					       DRV_NAME, ctrl);
++
++			/* Enable interrupt */
++			ctrl->soc->ctlrdy_ack(ctrl->soc);
++			ctrl->soc->ctlrdy_set_enabled(ctrl->soc, true);
++		} else {
++			/* Use standard interrupt infrastructure */
++			ret = devm_request_irq(dev, ctrl->irq, brcmnand_ctlrdy_irq, 0,
++					       DRV_NAME, ctrl);
++		}
++		if (ret < 0) {
++			dev_err(dev, "can't allocate IRQ %d: error %d\n",
++				ctrl->irq, ret);
++			goto err;
++		}
+ 	}
+ 
+ 	for_each_available_child_of_node(dn, child) {
diff --git a/target/linux/bcm47xx/patches-5.15/105-v5.18-mtd-rawnand-brcmnand-Add-platform-data-structure-for-BCMA.patch b/target/linux/bcm47xx/patches-5.15/105-v5.18-mtd-rawnand-brcmnand-Add-platform-data-structure-for-BCMA.patch
new file mode 100644
index 0000000000..973a3e95ee
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/105-v5.18-mtd-rawnand-brcmnand-Add-platform-data-structure-for-BCMA.patch
@@ -0,0 +1,115 @@
+From: Florian Fainelli <f.fainelli@gmail.com>
+Subject: [PATCH v3 6/9] mtd: rawnand: brcmnand: Add platform data structure for BCMA
+Date: Fri, 07 Jan 2022 10:46:11 -0800
+Content-Type: text/plain; charset="utf-8"
+
+Update the BCMA's chipcommon nand flash driver to detect which
+chip-select is used and pass that information via platform data to the
+brcmnand driver. Make sure that the brcmnand platform data structure is
+always at the beginning of the platform data of the "nflash" device
+created by BCMA to allow brcmnand to safely de-reference it.
+
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+---
+ MAINTAINERS                                 |  1 +
+ drivers/bcma/driver_chipcommon_nflash.c     | 20 +++++++++++++++++++-
+ include/linux/bcma/bcma_driver_chipcommon.h |  5 +++++
+ include/linux/platform_data/brcmnand.h      | 12 ++++++++++++
+ 4 files changed, 37 insertions(+), 1 deletion(-)
+ create mode 100644 include/linux/platform_data/brcmnand.h
+
+--- a/MAINTAINERS
++++ b/MAINTAINERS
+@@ -3712,6 +3712,7 @@ L:	linux-mtd@lists.infradead.org
+ L:	bcm-kernel-feedback-list@broadcom.com
+ S:	Maintained
+ F:	drivers/mtd/nand/raw/brcmnand/
++F:	include/linux/platform_data/brcmnand.h
+ 
+ BROADCOM SYSTEMPORT ETHERNET DRIVER
+ M:	Florian Fainelli <f.fainelli@gmail.com>
+--- a/drivers/bcma/driver_chipcommon_nflash.c
++++ b/drivers/bcma/driver_chipcommon_nflash.c
+@@ -7,18 +7,28 @@
+ 
+ #include "bcma_private.h"
+ 
++#include <linux/bitops.h>
+ #include <linux/platform_device.h>
++#include <linux/platform_data/brcmnand.h>
+ #include <linux/bcma/bcma.h>
+ 
++/* Alternate NAND controller driver name in order to allow both bcm47xxnflash
++ * and bcma_brcmnand to be built into the same kernel image.
++ */
++static const char *bcma_nflash_alt_name = "bcma_brcmnand";
++
+ struct platform_device bcma_nflash_dev = {
+ 	.name		= "bcma_nflash",
+ 	.num_resources	= 0,
+ };
+ 
++static const char *probes[] = { "bcm47xxpart", NULL };
++
+ /* Initialize NAND flash access */
+ int bcma_nflash_init(struct bcma_drv_cc *cc)
+ {
+ 	struct bcma_bus *bus = cc->core->bus;
++	u32 reg;
+ 
+ 	if (bus->chipinfo.id != BCMA_CHIP_ID_BCM4706 &&
+ 	    cc->core->id.rev != 38) {
+@@ -33,8 +43,16 @@ int bcma_nflash_init(struct bcma_drv_cc
+ 
+ 	cc->nflash.present = true;
+ 	if (cc->core->id.rev == 38 &&
+-	    (cc->status & BCMA_CC_CHIPST_5357_NAND_BOOT))
++	    (cc->status & BCMA_CC_CHIPST_5357_NAND_BOOT)) {
+ 		cc->nflash.boot = true;
++		/* Determine the chip select that is being used */
++		reg = bcma_cc_read32(cc, BCMA_CC_NAND_CS_NAND_SELECT) & 0xff;
++		cc->nflash.brcmnand_info.chip_select = ffs(reg) - 1;
++		cc->nflash.brcmnand_info.part_probe_types = probes;
++		cc->nflash.brcmnand_info.ecc_stepsize = 512;
++		cc->nflash.brcmnand_info.ecc_strength = 1;
++		bcma_nflash_dev.name = bcma_nflash_alt_name;
++	}
+ 
+ 	/* Prepare platform device, but don't register it yet. It's too early,
+ 	 * malloc (required by device_private_init) is not available yet. */
+--- a/include/linux/bcma/bcma_driver_chipcommon.h
++++ b/include/linux/bcma/bcma_driver_chipcommon.h
+@@ -3,6 +3,7 @@
+ #define LINUX_BCMA_DRIVER_CC_H_
+ 
+ #include <linux/platform_device.h>
++#include <linux/platform_data/brcmnand.h>
+ #include <linux/gpio.h>
+ 
+ /** ChipCommon core registers. **/
+@@ -599,6 +600,10 @@ struct bcma_sflash {
+ 
+ #ifdef CONFIG_BCMA_NFLASH
+ struct bcma_nflash {
++	/* Must be the fist member for the brcmnand driver to
++	 * de-reference that structure.
++	 */
++	struct brcmnand_platform_data brcmnand_info;
+ 	bool present;
+ 	bool boot;		/* This is the flash the SoC boots from */
+ };
+--- /dev/null
++++ b/include/linux/platform_data/brcmnand.h
+@@ -0,0 +1,12 @@
++/* SPDX-License-Identifier: GPL-2.0-only */
++#ifndef BRCMNAND_PLAT_DATA_H
++#define BRCMNAND_PLAT_DATA_H
++
++struct brcmnand_platform_data {
++	int	chip_select;
++	const char * const *part_probe_types;
++	unsigned int ecc_stepsize;
++	unsigned int ecc_strength;
++};
++
++#endif /* BRCMNAND_PLAT_DATA_H */
diff --git a/target/linux/bcm47xx/patches-5.15/106-v5.18-mtd-rawnand-brcmnand-Allow-platform-data-instantation.patch b/target/linux/bcm47xx/patches-5.15/106-v5.18-mtd-rawnand-brcmnand-Allow-platform-data-instantation.patch
new file mode 100644
index 0000000000..fb9ee07d04
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/106-v5.18-mtd-rawnand-brcmnand-Allow-platform-data-instantation.patch
@@ -0,0 +1,124 @@
+From: Florian Fainelli <f.fainelli@gmail.com>
+Subject: [PATCH v3 7/9] mtd: rawnand: brcmnand: Allow platform data instantation
+Date: Fri, 07 Jan 2022 10:46:12 -0800
+Content-Type: text/plain; charset="utf-8"
+
+Make use of the recently refactored code in brcmnand_init_cs() and
+derive the chip-select from the platform data that is supplied. Update
+the various code paths to avoid relying on possibly non-existent
+resources, too.
+
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+---
+ drivers/mtd/nand/raw/brcmnand/brcmnand.c | 45 ++++++++++++++++++------
+ 1 file changed, 35 insertions(+), 10 deletions(-)
+
+--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
++++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+@@ -9,6 +9,7 @@
+ #include <linux/delay.h>
+ #include <linux/device.h>
+ #include <linux/platform_device.h>
++#include <linux/platform_data/brcmnand.h>
+ #include <linux/err.h>
+ #include <linux/completion.h>
+ #include <linux/interrupt.h>
+@@ -2719,7 +2720,8 @@ static const struct nand_controller_ops
+ 	.attach_chip = brcmnand_attach_chip,
+ };
+ 
+-static int brcmnand_init_cs(struct brcmnand_host *host)
++static int brcmnand_init_cs(struct brcmnand_host *host,
++			    const char * const *part_probe_types)
+ {
+ 	struct brcmnand_controller *ctrl = host->ctrl;
+ 	struct device *dev = ctrl->dev;
+@@ -2772,7 +2774,7 @@ static int brcmnand_init_cs(struct brcmn
+ 	if (ret)
+ 		return ret;
+ 
+-	ret = mtd_device_register(mtd, NULL, 0);
++	ret = mtd_device_parse_register(mtd, part_probe_types, NULL, NULL, 0);
+ 	if (ret)
+ 		nand_cleanup(chip);
+ 
+@@ -2941,17 +2943,15 @@ static int brcmnand_edu_setup(struct pla
+ 
+ int brcmnand_probe(struct platform_device *pdev, struct brcmnand_soc *soc)
+ {
++	struct brcmnand_platform_data *pd = dev_get_platdata(&pdev->dev);
+ 	struct device *dev = &pdev->dev;
+ 	struct device_node *dn = dev->of_node, *child;
+ 	struct brcmnand_controller *ctrl;
++	struct brcmnand_host *host;
+ 	struct resource *res;
+ 	int ret;
+ 
+-	/* We only support device-tree instantiation */
+-	if (!dn)
+-		return -ENODEV;
+-
+-	if (!of_match_node(brcmnand_of_match, dn))
++	if (dn && !of_match_node(brcmnand_of_match, dn))
+ 		return -ENODEV;
+ 
+ 	ctrl = devm_kzalloc(dev, sizeof(*ctrl), GFP_KERNEL);
+@@ -2978,7 +2978,7 @@ int brcmnand_probe(struct platform_devic
+ 	/* NAND register range */
+ 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ 	ctrl->nand_base = devm_ioremap_resource(dev, res);
+-	if (IS_ERR(ctrl->nand_base))
++	if (IS_ERR(ctrl->nand_base) && !brcmnand_soc_has_ops(soc))
+ 		return PTR_ERR(ctrl->nand_base);
+ 
+ 	/* Enable clock before using NAND registers */
+@@ -3122,7 +3122,6 @@ int brcmnand_probe(struct platform_devic
+ 
+ 	for_each_available_child_of_node(dn, child) {
+ 		if (of_device_is_compatible(child, "brcm,nandcs")) {
+-			struct brcmnand_host *host;
+ 
+ 			host = devm_kzalloc(dev, sizeof(*host), GFP_KERNEL);
+ 			if (!host) {
+@@ -3142,7 +3141,7 @@ int brcmnand_probe(struct platform_devic
+ 
+ 			nand_set_flash_node(&host->chip, child);
+ 
+-			ret = brcmnand_init_cs(host);
++			ret = brcmnand_init_cs(host, NULL);
+ 			if (ret) {
+ 				devm_kfree(dev, host);
+ 				continue; /* Try all chip-selects */
+@@ -3152,6 +3151,32 @@ int brcmnand_probe(struct platform_devic
+ 		}
+ 	}
+ 
++	if (!list_empty(&ctrl->host_list))
++		return 0;
++
++	if (!pd) {
++		ret = -ENODEV;
++		goto err;
++	}
++
++	/* If we got there we must have been probing via platform data */
++	host = devm_kzalloc(dev, sizeof(*host), GFP_KERNEL);
++	if (!host) {
++		ret = -ENOMEM;
++		goto err;
++	}
++	host->pdev = pdev;
++	host->ctrl = ctrl;
++	host->cs = pd->chip_select;
++	host->chip.ecc.size = pd->ecc_stepsize;
++	host->chip.ecc.strength = pd->ecc_strength;
++
++	ret = brcmnand_init_cs(host, pd->part_probe_types);
++	if (ret)
++		goto err;
++
++	list_add_tail(&host->node, &ctrl->host_list);
++
+ 	/* No chip-selects could initialize properly */
+ 	if (list_empty(&ctrl->host_list)) {
+ 		ret = -ENODEV;
diff --git a/target/linux/bcm47xx/patches-5.15/107-v5.18-mtd-rawnand-brcmnand-BCMA-controller-uses-command-shift-of-0.patch b/target/linux/bcm47xx/patches-5.15/107-v5.18-mtd-rawnand-brcmnand-BCMA-controller-uses-command-shift-of-0.patch
new file mode 100644
index 0000000000..39f34aab29
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/107-v5.18-mtd-rawnand-brcmnand-BCMA-controller-uses-command-shift-of-0.patch
@@ -0,0 +1,29 @@
+From: Florian Fainelli <f.fainelli@gmail.com>
+Subject: [PATCH v3 8/9] mtd: rawnand: brcmnand: BCMA controller uses command shift of 0
+Date: Fri, 07 Jan 2022 10:46:13 -0800
+Content-Type: text/plain; charset="utf-8"
+
+For some odd and unexplained reason the BCMA NAND controller, albeit
+revision 3.4 uses a command shift of 0 instead of 24 as it should be,
+quirk that.
+
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+---
+ drivers/mtd/nand/raw/brcmnand/brcmnand.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
++++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+@@ -913,6 +913,12 @@ static void brcmnand_wr_corr_thresh(stru
+ 
+ static inline int brcmnand_cmd_shift(struct brcmnand_controller *ctrl)
+ {
++	/* Kludge for the BCMA-based NAND controller which does not actually
++	 * shift the command
++	 */
++	if (ctrl->nand_version == 0x0304 && brcmnand_non_mmio_ops(ctrl))
++		return 0;
++
+ 	if (ctrl->nand_version < 0x0602)
+ 		return 24;
+ 	return 0;
diff --git a/target/linux/bcm47xx/patches-5.15/108-v5.18-mtd-rawnand-brcmnand-Add-BCMA-shim.patch b/target/linux/bcm47xx/patches-5.15/108-v5.18-mtd-rawnand-brcmnand-Add-BCMA-shim.patch
new file mode 100644
index 0000000000..eabb4c2475
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/108-v5.18-mtd-rawnand-brcmnand-Add-BCMA-shim.patch
@@ -0,0 +1,201 @@
+From: Florian Fainelli <f.fainelli@gmail.com>
+Subject: [PATCH v3 9/9] mtd: rawnand: brcmnand: Add BCMA shim
+Date: Fri, 07 Jan 2022 10:46:14 -0800
+Content-Type: text/plain; charset="utf-8"
+
+Add a BCMA shim to allow us to register the brcmnand driver using the
+BCMA bus which provides indirect memory mapped access to SoC registers.
+
+There are a number of registers that need to be byte swapped because
+they are natively big endian, coming directly from the NAND chip, and
+there is no bus interface unlike the iProc or STB platforms that
+performs the byte swapping for us.
+
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+---
+ drivers/mtd/nand/raw/Kconfig              |  13 +++
+ drivers/mtd/nand/raw/brcmnand/Makefile    |   2 +
+ drivers/mtd/nand/raw/brcmnand/bcma_nand.c | 132 ++++++++++++++++++++++
+ drivers/mtd/nand/raw/brcmnand/brcmnand.c  |   4 +
+ 4 files changed, 151 insertions(+)
+ create mode 100644 drivers/mtd/nand/raw/brcmnand/bcma_nand.c
+
+--- a/drivers/mtd/nand/raw/Kconfig
++++ b/drivers/mtd/nand/raw/Kconfig
+@@ -236,6 +236,19 @@ config MTD_NAND_BRCMNAND
+ 	  originally designed for Set-Top Box but is used on various BCM7xxx,
+ 	  BCM3xxx, BCM63xxx, iProc/Cygnus and more.
+ 
++if MTD_NAND_BRCMNAND
++
++config MTD_NAND_BRCMNAND_BCMA
++	tristate "Broadcom BCMA NAND controller"
++	depends on BCMA_NFLASH
++	depends on BCMA
++	help
++	  Enables the BRCMNAND controller over BCMA on BCM47186/BCM5358 SoCs.
++	  The glue driver will take care of performing the low-level I/O
++	  operations to interface the BRCMNAND controller over the BCMA bus.
++
++endif # MTD_NAND_BRCMNAND
++
+ config MTD_NAND_BCM47XXNFLASH
+ 	tristate "BCM4706 BCMA NAND controller"
+ 	depends on BCMA_NFLASH
+--- a/drivers/mtd/nand/raw/brcmnand/Makefile
++++ b/drivers/mtd/nand/raw/brcmnand/Makefile
+@@ -6,3 +6,5 @@ obj-$(CONFIG_MTD_NAND_BRCMNAND)		+= bcm6
+ obj-$(CONFIG_MTD_NAND_BRCMNAND)		+= bcm6368_nand.o
+ obj-$(CONFIG_MTD_NAND_BRCMNAND)		+= brcmstb_nand.o
+ obj-$(CONFIG_MTD_NAND_BRCMNAND)		+= brcmnand.o
++
++obj-$(CONFIG_MTD_NAND_BRCMNAND_BCMA)	+= bcma_nand.o
+--- /dev/null
++++ b/drivers/mtd/nand/raw/brcmnand/bcma_nand.c
+@@ -0,0 +1,132 @@
++// SPDX-License-Identifier: GPL-2.0-only
++/*
++ * Copyright © 2021 Broadcom
++ */
++#include <linux/bcma/bcma.h>
++#include <linux/bcma/bcma_driver_chipcommon.h>
++#include <linux/device.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++
++#include "brcmnand.h"
++
++struct brcmnand_bcma_soc {
++	struct brcmnand_soc soc;
++	struct bcma_drv_cc *cc;
++};
++
++static inline bool brcmnand_bcma_needs_swapping(u32 offset)
++{
++	switch (offset) {
++	case BCMA_CC_NAND_SPARE_RD0:
++	case BCMA_CC_NAND_SPARE_RD4:
++	case BCMA_CC_NAND_SPARE_RD8:
++	case BCMA_CC_NAND_SPARE_RD12:
++	case BCMA_CC_NAND_SPARE_WR0:
++	case BCMA_CC_NAND_SPARE_WR4:
++	case BCMA_CC_NAND_SPARE_WR8:
++	case BCMA_CC_NAND_SPARE_WR12:
++	case BCMA_CC_NAND_DEVID:
++	case BCMA_CC_NAND_DEVID_X:
++	case BCMA_CC_NAND_SPARE_RD16:
++	case BCMA_CC_NAND_SPARE_RD20:
++	case BCMA_CC_NAND_SPARE_RD24:
++	case BCMA_CC_NAND_SPARE_RD28:
++		return true;
++	}
++
++	return false;
++}
++
++static inline struct brcmnand_bcma_soc *to_bcma_soc(struct brcmnand_soc *soc)
++{
++	return container_of(soc, struct brcmnand_bcma_soc, soc);
++}
++
++static u32 brcmnand_bcma_read_reg(struct brcmnand_soc *soc, u32 offset)
++{
++	struct brcmnand_bcma_soc *sc = to_bcma_soc(soc);
++	u32 val;
++
++	/* Offset into the NAND block and deal with the flash cache separately */
++	if (offset == BRCMNAND_NON_MMIO_FC_ADDR)
++		offset = BCMA_CC_NAND_CACHE_DATA;
++	else
++		offset += BCMA_CC_NAND_REVISION;
++
++	val = bcma_cc_read32(sc->cc, offset);
++
++	/* Swap if necessary */
++	if (brcmnand_bcma_needs_swapping(offset))
++		val = be32_to_cpu(val);
++	return val;
++}
++
++static void brcmnand_bcma_write_reg(struct brcmnand_soc *soc, u32 val,
++				    u32 offset)
++{
++	struct brcmnand_bcma_soc *sc = to_bcma_soc(soc);
++
++	/* Offset into the NAND block */
++	if (offset == BRCMNAND_NON_MMIO_FC_ADDR)
++		offset = BCMA_CC_NAND_CACHE_DATA;
++	else
++		offset += BCMA_CC_NAND_REVISION;
++
++	/* Swap if necessary */
++	if (brcmnand_bcma_needs_swapping(offset))
++		val = cpu_to_be32(val);
++
++	bcma_cc_write32(sc->cc, offset, val);
++}
++
++static struct brcmnand_io_ops brcmnand_bcma_io_ops = {
++	.read_reg	= brcmnand_bcma_read_reg,
++	.write_reg	= brcmnand_bcma_write_reg,
++};
++
++static void brcmnand_bcma_prepare_data_bus(struct brcmnand_soc *soc, bool prepare,
++					   bool is_param)
++{
++	struct brcmnand_bcma_soc *sc = to_bcma_soc(soc);
++
++	/* Reset the cache address to ensure we are already accessing the
++	 * beginning of a sub-page.
++	 */
++	bcma_cc_write32(sc->cc, BCMA_CC_NAND_CACHE_ADDR, 0);
++}
++
++static int brcmnand_bcma_nand_probe(struct platform_device *pdev)
++{
++	struct bcma_nflash *nflash = dev_get_platdata(&pdev->dev);
++	struct brcmnand_bcma_soc *soc;
++
++	soc = devm_kzalloc(&pdev->dev, sizeof(*soc), GFP_KERNEL);
++	if (!soc)
++		return -ENOMEM;
++
++	soc->cc = container_of(nflash, struct bcma_drv_cc, nflash);
++	soc->soc.prepare_data_bus = brcmnand_bcma_prepare_data_bus;
++	soc->soc.ops = &brcmnand_bcma_io_ops;
++
++	if (soc->cc->core->bus->chipinfo.id == BCMA_CHIP_ID_BCM4706) {
++		dev_err(&pdev->dev, "Use bcm47xxnflash for 4706!\n");
++		return -ENODEV;
++	}
++
++	return brcmnand_probe(pdev, &soc->soc);
++}
++
++static struct platform_driver brcmnand_bcma_nand_driver = {
++	.probe			= brcmnand_bcma_nand_probe,
++	.remove			= brcmnand_remove,
++	.driver = {
++		.name		= "bcma_brcmnand",
++		.pm		= &brcmnand_pm_ops,
++	}
++};
++module_platform_driver(brcmnand_bcma_nand_driver);
++
++MODULE_LICENSE("GPL v2");
++MODULE_AUTHOR("Broadcom");
++MODULE_DESCRIPTION("NAND controller driver glue for BCMA chips");
+--- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
++++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
+@@ -595,7 +595,11 @@ enum {
+ 
+ static inline bool brcmnand_non_mmio_ops(struct brcmnand_controller *ctrl)
+ {
++#if IS_ENABLED(CONFIG_MTD_NAND_BRCMNAND_BCMA)
+ 	return static_branch_unlikely(&brcmnand_soc_has_ops_key);
++#else
++	return false;
++#endif
+ }
+ 
+ static inline u32 nand_readreg(struct brcmnand_controller *ctrl, u32 offs)
diff --git a/target/linux/bcm47xx/patches-5.15/159-cpu_fixes.patch b/target/linux/bcm47xx/patches-5.15/159-cpu_fixes.patch
new file mode 100644
index 0000000000..0c9a9d6490
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/159-cpu_fixes.patch
@@ -0,0 +1,493 @@
+--- a/arch/mips/include/asm/r4kcache.h
++++ b/arch/mips/include/asm/r4kcache.h
+@@ -28,6 +28,38 @@
+ extern void (*r4k_blast_dcache)(void);
+ extern void (*r4k_blast_icache)(void);
+ 
++#if defined(CONFIG_BCM47XX) && !defined(CONFIG_CPU_MIPS32_R2)
++#include <asm/paccess.h>
++#include <linux/ssb/ssb.h>
++#define BCM4710_DUMMY_RREG() bcm4710_dummy_rreg()
++
++static inline unsigned long bcm4710_dummy_rreg(void)
++{
++      return *(volatile unsigned long *)(KSEG1ADDR(SSB_ENUM_BASE));
++}
++
++#define BCM4710_FILL_TLB(addr) bcm4710_fill_tlb((void *)(addr))
++
++static inline unsigned long bcm4710_fill_tlb(void *addr)
++{
++      return *(unsigned long *)addr;
++}
++
++#define BCM4710_PROTECTED_FILL_TLB(addr) bcm4710_protected_fill_tlb((void *)(addr))
++
++static inline void bcm4710_protected_fill_tlb(void *addr)
++{
++      unsigned long x;
++      get_dbe(x, (unsigned long *)addr);;
++}
++
++#else
++#define BCM4710_DUMMY_RREG()
++
++#define BCM4710_FILL_TLB(addr)
++#define BCM4710_PROTECTED_FILL_TLB(addr)
++#endif
++
+ /*
+  * This macro return a properly sign-extended address suitable as base address
+  * for indexed cache operations.  Two issues here:
+@@ -61,6 +93,7 @@ static inline void flush_icache_line_ind
+ 
+ static inline void flush_dcache_line_indexed(unsigned long addr)
+ {
++	BCM4710_DUMMY_RREG();
+ 	cache_op(Index_Writeback_Inv_D, addr);
+ }
+ 
+@@ -84,11 +117,13 @@ static inline void flush_icache_line(uns
+ 
+ static inline void flush_dcache_line(unsigned long addr)
+ {
++	BCM4710_DUMMY_RREG();
+ 	cache_op(Hit_Writeback_Inv_D, addr);
+ }
+ 
+ static inline void invalidate_dcache_line(unsigned long addr)
+ {
++	BCM4710_DUMMY_RREG();
+ 	cache_op(Hit_Invalidate_D, addr);
+ }
+ 
+@@ -161,6 +196,7 @@ static inline int protected_flush_icache
+ #ifdef CONFIG_EVA
+ 		return protected_cachee_op(Hit_Invalidate_I, addr);
+ #else
++		BCM4710_DUMMY_RREG();
+ 		return protected_cache_op(Hit_Invalidate_I, addr);
+ #endif
+ 	}
+@@ -174,6 +210,7 @@ static inline int protected_flush_icache
+  */
+ static inline int protected_writeback_dcache_line(unsigned long addr)
+ {
++	BCM4710_DUMMY_RREG();
+ #ifdef CONFIG_EVA
+ 	return protected_cachee_op(Hit_Writeback_Inv_D, addr);
+ #else
+@@ -203,8 +240,51 @@ static inline void invalidate_tcache_pag
+ 	unroll(times, _cache_op, insn, op, (addr) + (i++ * (lsize)));	\
+ } while (0)
+ 
++static inline void blast_dcache(void)
++{
++	unsigned long start = KSEG0;
++	unsigned long dcache_size = current_cpu_data.dcache.waysize * current_cpu_data.dcache.ways;
++	unsigned long end = (start + dcache_size);
++
++	do {
++		BCM4710_DUMMY_RREG();
++		cache_op(Index_Writeback_Inv_D, start);
++		start += current_cpu_data.dcache.linesz;
++	} while(start < end);
++}
++
++static inline void blast_dcache_page(unsigned long page)
++{
++	unsigned long start = page;
++	unsigned long end = start + PAGE_SIZE;
++
++	BCM4710_FILL_TLB(start);
++	do {
++		BCM4710_DUMMY_RREG();
++		cache_op(Hit_Writeback_Inv_D, start);
++		start += current_cpu_data.dcache.linesz;
++	} while(start < end);
++}
++
++static inline void blast_dcache_page_indexed(unsigned long page)
++{
++	unsigned long start = page;
++	unsigned long end = start + PAGE_SIZE;
++	unsigned long ws_inc = 1UL << current_cpu_data.dcache.waybit;
++	unsigned long ws_end = current_cpu_data.dcache.ways <<
++	                       current_cpu_data.dcache.waybit;
++	unsigned long ws, addr;
++	for (ws = 0; ws < ws_end; ws += ws_inc) {
++		start = page + ws;
++		for (addr = start; addr < end; addr += current_cpu_data.dcache.linesz) {
++			BCM4710_DUMMY_RREG();
++			cache_op(Index_Writeback_Inv_D, addr);
++		}
++	}
++}
++
+ /* build blast_xxx, blast_xxx_page, blast_xxx_page_indexed */
+-#define __BUILD_BLAST_CACHE(pfx, desc, indexop, hitop, lsize, extra)	\
++#define __BUILD_BLAST_CACHE(pfx, desc, indexop, hitop, lsize, extra, war) \
+ static inline void extra##blast_##pfx##cache##lsize(void)		\
+ {									\
+ 	unsigned long start = INDEX_BASE;				\
+@@ -214,6 +294,7 @@ static inline void extra##blast_##pfx##c
+ 			       current_cpu_data.desc.waybit;		\
+ 	unsigned long ws, addr;						\
+ 									\
++	war								\
+ 	for (ws = 0; ws < ws_end; ws += ws_inc)				\
+ 		for (addr = start; addr < end; addr += lsize * 32)	\
+ 			cache_unroll(32, kernel_cache, indexop,		\
+@@ -225,6 +306,7 @@ static inline void extra##blast_##pfx##c
+ 	unsigned long start = page;					\
+ 	unsigned long end = page + PAGE_SIZE;				\
+ 									\
++	war								\
+ 	do {								\
+ 		cache_unroll(32, kernel_cache, hitop, start, lsize);	\
+ 		start += lsize * 32;					\
+@@ -241,32 +323,33 @@ static inline void extra##blast_##pfx##c
+ 			       current_cpu_data.desc.waybit;		\
+ 	unsigned long ws, addr;						\
+ 									\
++	war								\
+ 	for (ws = 0; ws < ws_end; ws += ws_inc)				\
+ 		for (addr = start; addr < end; addr += lsize * 32)	\
+ 			cache_unroll(32, kernel_cache, indexop,		\
+ 				     addr | ws, lsize);			\
+ }
+ 
+-__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 16, )
+-__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 16, )
+-__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 16, )
+-__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 32, )
+-__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 32, )
+-__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I_Loongson2, 32, loongson2_)
+-__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 32, )
+-__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 64, )
+-__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 64, )
+-__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 64, )
+-__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 128, )
+-__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 128, )
+-__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 128, )
+-
+-__BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 16, )
+-__BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 32, )
+-__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 16, )
+-__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 32, )
+-__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 64, )
+-__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 128, )
++__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 16, , )
++__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 16, , BCM4710_FILL_TLB(start);)
++__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 16, , )
++__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 32, , )
++__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 32, , BCM4710_FILL_TLB(start);)
++__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I_Loongson2, 32, loongson2_, BCM4710_FILL_TLB(start);)
++__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 32, , )
++__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 64, , )
++__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 64, , BCM4710_FILL_TLB(start);)
++__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 64, , )
++__BUILD_BLAST_CACHE(d, dcache, Index_Writeback_Inv_D, Hit_Writeback_Inv_D, 128, , )
++__BUILD_BLAST_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 128, , )
++__BUILD_BLAST_CACHE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 128, , )
++
++__BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 16, , )
++__BUILD_BLAST_CACHE(inv_d, dcache, Index_Writeback_Inv_D, Hit_Invalidate_D, 32, , )
++__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 16, , )
++__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 32, , )
++__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 64, , )
++__BUILD_BLAST_CACHE(inv_s, scache, Index_Writeback_Inv_SD, Hit_Invalidate_SD, 128, , )
+ 
+ #define __BUILD_BLAST_USER_CACHE(pfx, desc, indexop, hitop, lsize) \
+ static inline void blast_##pfx##cache##lsize##_user_page(unsigned long page) \
+@@ -291,58 +374,29 @@ __BUILD_BLAST_USER_CACHE(d, dcache, Inde
+ __BUILD_BLAST_USER_CACHE(i, icache, Index_Invalidate_I, Hit_Invalidate_I, 64)
+ 
+ /* build blast_xxx_range, protected_blast_xxx_range */
+-#define __BUILD_BLAST_CACHE_RANGE(pfx, desc, hitop, prot, extra)	\
++#define __BUILD_BLAST_CACHE_RANGE(pfx, desc, hitop, prot, extra, war, war2)	\
+ static inline void prot##extra##blast_##pfx##cache##_range(unsigned long start, \
+ 						    unsigned long end)	\
+ {									\
+ 	unsigned long lsize = cpu_##desc##_line_size();			\
+-	unsigned long lsize_2 = lsize * 2;				\
+-	unsigned long lsize_3 = lsize * 3;				\
+-	unsigned long lsize_4 = lsize * 4;				\
+-	unsigned long lsize_5 = lsize * 5;				\
+-	unsigned long lsize_6 = lsize * 6;				\
+-	unsigned long lsize_7 = lsize * 7;				\
+-	unsigned long lsize_8 = lsize * 8;				\
+ 	unsigned long addr = start & ~(lsize - 1);			\
+-	unsigned long aend = (end + lsize - 1) & ~(lsize - 1);		\
+-	int lines = (aend - addr) / lsize;				\
+-									\
+-	while (lines >= 8) {						\
+-		prot##cache_op(hitop, addr);				\
+-		prot##cache_op(hitop, addr + lsize);			\
+-		prot##cache_op(hitop, addr + lsize_2);			\
+-		prot##cache_op(hitop, addr + lsize_3);			\
+-		prot##cache_op(hitop, addr + lsize_4);			\
+-		prot##cache_op(hitop, addr + lsize_5);			\
+-		prot##cache_op(hitop, addr + lsize_6);			\
+-		prot##cache_op(hitop, addr + lsize_7);			\
+-		addr += lsize_8;					\
+-		lines -= 8;						\
+-	}								\
+-									\
+-	if (lines & 0x4) {						\
+-		prot##cache_op(hitop, addr);				\
+-		prot##cache_op(hitop, addr + lsize);			\
+-		prot##cache_op(hitop, addr + lsize_2);			\
+-		prot##cache_op(hitop, addr + lsize_3);			\
+-		addr += lsize_4;					\
+-	}								\
++	unsigned long aend = (end - 1) & ~(lsize - 1);			\
+ 									\
+-	if (lines & 0x2) {						\
+-		prot##cache_op(hitop, addr);				\
+-		prot##cache_op(hitop, addr + lsize);			\
+-		addr += lsize_2;					\
+-	}								\
++	war								\
+ 									\
+-	if (lines & 0x1) {						\
++	while (1) {							\
++		war2							\
+ 		prot##cache_op(hitop, addr);				\
++		if (addr == aend)					\
++			break;						\
++		addr += lsize;						\
+ 	}								\
+ }
+ 
+ #ifndef CONFIG_EVA
+ 
+-__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, protected_, )
+-__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, protected_, )
++__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, protected_, , BCM4710_PROTECTED_FILL_TLB(addr); BCM4710_PROTECTED_FILL_TLB(aend);, BCM4710_DUMMY_RREG();)
++__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, protected_, , , )
+ 
+ #else
+ 
+@@ -376,15 +430,15 @@ __BUILD_PROT_BLAST_CACHE_RANGE(d, dcache
+ __BUILD_PROT_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I)
+ 
+ #endif
+-__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, protected_, )
++__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, protected_, , , )
+ __BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I_Loongson2, \
+-	protected_, loongson2_)
+-__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, , )
+-__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, , )
+-__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, , )
++	protected_, loongson2_, , )
++__BUILD_BLAST_CACHE_RANGE(d, dcache, Hit_Writeback_Inv_D, , , BCM4710_FILL_TLB(addr); BCM4710_FILL_TLB(aend);, BCM4710_DUMMY_RREG();)
++__BUILD_BLAST_CACHE_RANGE(i, icache, Hit_Invalidate_I, , , , )
++__BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, , , , )
+ /* blast_inv_dcache_range */
+-__BUILD_BLAST_CACHE_RANGE(inv_d, dcache, Hit_Invalidate_D, , )
+-__BUILD_BLAST_CACHE_RANGE(inv_s, scache, Hit_Invalidate_SD, , )
++__BUILD_BLAST_CACHE_RANGE(inv_d, dcache, Hit_Invalidate_D, , , , BCM4710_DUMMY_RREG();)
++__BUILD_BLAST_CACHE_RANGE(inv_s, scache, Hit_Invalidate_SD, , , , )
+ 
+ /* Currently, this is very specific to Loongson-3 */
+ #define __BUILD_BLAST_CACHE_NODE(pfx, desc, indexop, hitop, lsize)	\
+--- a/arch/mips/include/asm/stackframe.h
++++ b/arch/mips/include/asm/stackframe.h
+@@ -429,6 +429,10 @@
+ #else
+ 		.set	push
+ 		.set	arch=r4000
++#ifdef CONFIG_BCM47XX
++		nop
++		nop
++#endif
+ 		eret
+ 		.set	pop
+ #endif
+--- a/arch/mips/kernel/genex.S
++++ b/arch/mips/kernel/genex.S
+@@ -22,6 +22,19 @@
+ #include <asm/war.h>
+ #include <asm/thread_info.h>
+ 
++#ifdef CONFIG_BCM47XX
++# ifdef eret
++#  undef eret
++# endif
++# define eret 					\
++	.set push;				\
++	.set noreorder;				\
++	 nop; 					\
++	 nop;					\
++	 eret;					\
++	.set pop;
++#endif
++
+ 	__INIT
+ 
+ /*
+@@ -33,6 +46,9 @@
+ NESTED(except_vec3_generic, 0, sp)
+ 	.set	push
+ 	.set	noat
++#ifdef CONFIG_BCM47XX
++	nop
++#endif
+ 	mfc0	k1, CP0_CAUSE
+ 	andi	k1, k1, 0x7c
+ #ifdef CONFIG_64BIT
+@@ -53,6 +69,9 @@ NESTED(except_vec3_r4000, 0, sp)
+ 	.set	push
+ 	.set	arch=r4000
+ 	.set	noat
++#ifdef CONFIG_BCM47XX
++	nop
++#endif
+ 	mfc0	k1, CP0_CAUSE
+ 	li	k0, 31<<2
+ 	andi	k1, k1, 0x7c
+--- a/arch/mips/mm/c-r4k.c
++++ b/arch/mips/mm/c-r4k.c
+@@ -38,6 +38,9 @@
+ #include <asm/dma-coherence.h>
+ #include <asm/mips-cps.h>
+ 
++/* For enabling BCM4710 cache workarounds */
++static int bcm4710 = 0;
++
+ /*
+  * Bits describing what cache ops an SMP callback function may perform.
+  *
+@@ -190,6 +193,9 @@ static void r4k_blast_dcache_user_page_s
+ {
+ 	unsigned long  dc_lsize = cpu_dcache_line_size();
+ 
++	if (bcm4710)
++		r4k_blast_dcache_page = blast_dcache_page;
++	else
+ 	if (dc_lsize == 0)
+ 		r4k_blast_dcache_user_page = (void *)cache_noop;
+ 	else if (dc_lsize == 16)
+@@ -208,6 +214,9 @@ static void r4k_blast_dcache_page_indexe
+ {
+ 	unsigned long dc_lsize = cpu_dcache_line_size();
+ 
++	if (bcm4710)
++		r4k_blast_dcache_page_indexed = blast_dcache_page_indexed;
++	else
+ 	if (dc_lsize == 0)
+ 		r4k_blast_dcache_page_indexed = (void *)cache_noop;
+ 	else if (dc_lsize == 16)
+@@ -227,6 +236,9 @@ static void r4k_blast_dcache_setup(void)
+ {
+ 	unsigned long dc_lsize = cpu_dcache_line_size();
+ 
++	if (bcm4710)
++		r4k_blast_dcache = blast_dcache;
++	else
+ 	if (dc_lsize == 0)
+ 		r4k_blast_dcache = (void *)cache_noop;
+ 	else if (dc_lsize == 16)
+@@ -1818,6 +1830,17 @@ static void coherency_setup(void)
+ 	 * silly idea of putting something else there ...
+ 	 */
+ 	switch (current_cpu_type()) {
++	case CPU_BMIPS3300:
++		{
++			u32 cm;
++			cm = read_c0_diag();
++			/* Enable icache */
++			cm |= (1 << 31);
++			/* Enable dcache */
++			cm |= (1 << 30);
++			write_c0_diag(cm);
++		}
++		break;
+ 	case CPU_R4000PC:
+ 	case CPU_R4000SC:
+ 	case CPU_R4000MC:
+@@ -1864,6 +1887,15 @@ void r4k_cache_init(void)
+ 	extern void build_copy_page(void);
+ 	struct cpuinfo_mips *c = &current_cpu_data;
+ 
++	/* Check if special workarounds are required */
++#if defined(CONFIG_BCM47XX) && !defined(CONFIG_CPU_MIPS32_R2)
++	if (current_cpu_data.cputype == CPU_BMIPS32 && (current_cpu_data.processor_id & 0xff) == 0) {
++		printk("Enabling BCM4710A0 cache workarounds.\n");
++		bcm4710 = 1;
++	} else
++#endif
++		bcm4710 = 0;
++
+ 	probe_pcache();
+ 	probe_vcache();
+ 	setup_scache();
+@@ -1940,7 +1972,15 @@ void r4k_cache_init(void)
+ 	 */
+ 	local_r4k___flush_cache_all(NULL);
+ 
++#ifdef CONFIG_BCM47XX
++	{
++		static void (*_coherency_setup)(void);
++		_coherency_setup = (void (*)(void)) KSEG1ADDR(coherency_setup);
++		_coherency_setup();
++	}
++#else
+ 	coherency_setup();
++#endif
+ 	board_cache_error_setup = r4k_cache_error_setup;
+ 
+ 	/*
+--- a/arch/mips/mm/tlbex.c
++++ b/arch/mips/mm/tlbex.c
+@@ -984,6 +984,9 @@ void build_get_pgde32(u32 **p, unsigned
+ 		uasm_i_srl(p, ptr, ptr, SMP_CPUID_PTRSHIFT);
+ 		uasm_i_addu(p, ptr, tmp, ptr);
+ #else
++#ifdef CONFIG_BCM47XX
++		uasm_i_nop(p);
++#endif
+ 		UASM_i_LA_mostly(p, ptr, pgdc);
+ #endif
+ 		uasm_i_mfc0(p, tmp, C0_BADVADDR); /* get faulting address */
+@@ -1345,6 +1348,9 @@ static void build_r4000_tlb_refill_handl
+ #ifdef CONFIG_64BIT
+ 		build_get_pmde64(&p, &l, &r, K0, K1); /* get pmd in K1 */
+ #else
++# ifdef CONFIG_BCM47XX
++		uasm_i_nop(&p);
++# endif
+ 		build_get_pgde32(&p, K0, K1); /* get pgd in K1 */
+ #endif
+ 
+@@ -1356,6 +1362,9 @@ static void build_r4000_tlb_refill_handl
+ 		build_update_entries(&p, K0, K1);
+ 		build_tlb_write_entry(&p, &l, &r, tlb_random);
+ 		uasm_l_leave(&l, p);
++#ifdef CONFIG_BCM47XX
++		uasm_i_nop(&p);
++#endif
+ 		uasm_i_eret(&p); /* return from trap */
+ 	}
+ #ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT
+@@ -2056,6 +2065,9 @@ build_r4000_tlbchange_handler_head(u32 *
+ #ifdef CONFIG_64BIT
+ 	build_get_pmde64(p, l, r, wr.r1, wr.r2); /* get pmd in ptr */
+ #else
++# ifdef CONFIG_BCM47XX
++	uasm_i_nop(p);
++# endif
+ 	build_get_pgde32(p, wr.r1, wr.r2); /* get pgd in ptr */
+ #endif
+ 
+@@ -2102,6 +2114,9 @@ build_r4000_tlbchange_handler_tail(u32 *
+ 	build_tlb_write_entry(p, l, r, tlb_indexed);
+ 	uasm_l_leave(l, *p);
+ 	build_restore_work_registers(p);
++#ifdef CONFIG_BCM47XX
++	uasm_i_nop(p);
++#endif
+ 	uasm_i_eret(p); /* return from trap */
+ 
+ #ifdef CONFIG_64BIT
diff --git a/target/linux/bcm47xx/patches-5.15/160-kmap_coherent.patch b/target/linux/bcm47xx/patches-5.15/160-kmap_coherent.patch
new file mode 100644
index 0000000000..caa3d9816b
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/160-kmap_coherent.patch
@@ -0,0 +1,78 @@
+From: Jeff Hansen <jhansen@cardaccess-inc.com>
+Subject: [PATCH] kmap_coherent
+
+On ASUS WL-500gP there are some "Data bus error"s when executing simple
+commands liks "ps" or "cat /proc/1/cmdline".
+
+This fixes OpenWrt ticket #1485: https://dev.openwrt.org/ticket/1485
+---
+--- a/arch/mips/include/asm/cpu-features.h
++++ b/arch/mips/include/asm/cpu-features.h
+@@ -242,6 +242,9 @@
+ #ifndef cpu_has_pindexed_dcache
+ #define cpu_has_pindexed_dcache	(cpu_data[0].dcache.flags & MIPS_CACHE_PINDEX)
+ #endif
++#ifndef cpu_use_kmap_coherent
++#define cpu_use_kmap_coherent 1
++#endif
+ 
+ /*
+  * I-Cache snoops remote store.	 This only matters on SMP.  Some multiprocessors
+--- a/arch/mips/include/asm/mach-bcm47xx/cpu-feature-overrides.h
++++ b/arch/mips/include/asm/mach-bcm47xx/cpu-feature-overrides.h
+@@ -80,4 +80,6 @@
+ #define cpu_scache_line_size()		0
+ #define cpu_has_vz			0
+ 
++#define cpu_use_kmap_coherent		0
++
+ #endif /* __ASM_MACH_BCM47XX_CPU_FEATURE_OVERRIDES_H */
+--- a/arch/mips/mm/c-r4k.c
++++ b/arch/mips/mm/c-r4k.c
+@@ -699,7 +699,7 @@ static inline void local_r4k_flush_cache
+ 		map_coherent = (cpu_has_dc_aliases &&
+ 				page_mapcount(page) &&
+ 				!Page_dcache_dirty(page));
+-		if (map_coherent)
++		if (map_coherent && cpu_use_kmap_coherent)
+ 			vaddr = kmap_coherent(page, addr);
+ 		else
+ 			vaddr = kmap_atomic(page);
+@@ -721,7 +721,7 @@ static inline void local_r4k_flush_cache
+ 	}
+ 
+ 	if (vaddr) {
+-		if (map_coherent)
++		if (map_coherent && cpu_use_kmap_coherent)
+ 			kunmap_coherent();
+ 		else
+ 			kunmap_atomic(vaddr);
+--- a/arch/mips/mm/init.c
++++ b/arch/mips/mm/init.c
+@@ -173,7 +173,7 @@ void copy_user_highpage(struct page *to,
+ 	void *vfrom, *vto;
+ 
+ 	vto = kmap_atomic(to);
+-	if (cpu_has_dc_aliases &&
++	if (cpu_has_dc_aliases && cpu_use_kmap_coherent &&
+ 	    page_mapcount(from) && !Page_dcache_dirty(from)) {
+ 		vfrom = kmap_coherent(from, vaddr);
+ 		copy_page(vto, vfrom);
+@@ -195,7 +195,7 @@ void copy_to_user_page(struct vm_area_st
+ 	struct page *page, unsigned long vaddr, void *dst, const void *src,
+ 	unsigned long len)
+ {
+-	if (cpu_has_dc_aliases &&
++	if (cpu_has_dc_aliases && cpu_use_kmap_coherent &&
+ 	    page_mapcount(page) && !Page_dcache_dirty(page)) {
+ 		void *vto = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
+ 		memcpy(vto, src, len);
+@@ -213,7 +213,7 @@ void copy_from_user_page(struct vm_area_
+ 	struct page *page, unsigned long vaddr, void *dst, const void *src,
+ 	unsigned long len)
+ {
+-	if (cpu_has_dc_aliases &&
++	if (cpu_has_dc_aliases && cpu_use_kmap_coherent &&
+ 	    page_mapcount(page) && !Page_dcache_dirty(page)) {
+ 		void *vfrom = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
+ 		memcpy(dst, vfrom, len);
diff --git a/target/linux/bcm47xx/patches-5.15/209-b44-register-adm-switch.patch b/target/linux/bcm47xx/patches-5.15/209-b44-register-adm-switch.patch
new file mode 100644
index 0000000000..7728ec1094
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/209-b44-register-adm-switch.patch
@@ -0,0 +1,121 @@
+From b36f694256f41bc71571f467646d015dda128d14 Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Sat, 9 Nov 2013 17:03:59 +0100
+Subject: [PATCH 210/210] b44: register adm switch
+
+---
+ drivers/net/ethernet/broadcom/b44.c |   57 +++++++++++++++++++++++++++++++++++
+ drivers/net/ethernet/broadcom/b44.h |    3 ++
+ 2 files changed, 60 insertions(+)
+
+--- a/drivers/net/ethernet/broadcom/b44.c
++++ b/drivers/net/ethernet/broadcom/b44.c
+@@ -31,6 +31,8 @@
+ #include <linux/ssb/ssb.h>
+ #include <linux/slab.h>
+ #include <linux/phy.h>
++#include <linux/platform_device.h>
++#include <linux/platform_data/adm6996-gpio.h>
+ 
+ #include <linux/uaccess.h>
+ #include <asm/io.h>
+@@ -2243,6 +2245,69 @@ static void b44_adjust_link(struct net_d
+ 	}
+ }
+ 
++#ifdef CONFIG_BCM47XX
++static int b44_register_adm_switch(struct b44 *bp)
++{
++	int gpio;
++	struct platform_device *pdev;
++	struct adm6996_gpio_platform_data adm_data = {0};
++	struct platform_device_info info = {0};
++
++	adm_data.model = ADM6996L;
++	gpio = bcm47xx_nvram_gpio_pin("adm_eecs");
++	if (gpio >= 0)
++		adm_data.eecs = gpio;
++	else
++		adm_data.eecs = 2;
++
++	gpio = bcm47xx_nvram_gpio_pin("adm_eesk");
++	if (gpio >= 0)
++		adm_data.eesk = gpio;
++	else
++		adm_data.eesk = 3;
++
++	gpio = bcm47xx_nvram_gpio_pin("adm_eedi");
++	if (gpio >= 0)
++		adm_data.eedi = gpio;
++	else
++		adm_data.eedi = 4;
++
++	/*
++	 * We ignore the "adm_rc" GPIO here. The driver does not use it,
++	 * and it conflicts with the Reset button GPIO on the Linksys WRT54GSv1.
++	 */
++
++	info.parent = bp->sdev->dev;
++	info.name = "adm6996_gpio";
++	info.id = -1;
++	info.data = &adm_data;
++	info.size_data = sizeof(adm_data);
++
++	if (!bp->adm_switch) {
++		pdev = platform_device_register_full(&info);
++		if (IS_ERR(pdev))
++			return PTR_ERR(pdev);
++
++		bp->adm_switch = pdev;
++	}
++	return 0;
++}
++static void b44_unregister_adm_switch(struct b44 *bp)
++{
++	if (bp->adm_switch)
++		platform_device_unregister(bp->adm_switch);
++}
++#else
++static int b44_register_adm_switch(struct b44 *bp)
++{
++	return 0;
++}
++static void b44_unregister_adm_switch(struct b44 *bp)
++{
++
++}
++#endif /* CONFIG_BCM47XX */
++
+ static int b44_register_phy_one(struct b44 *bp)
+ {
+ 	__ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
+@@ -2279,6 +2344,9 @@ static int b44_register_phy_one(struct b
+ 	if (!mdiobus_is_registered_device(bp->mii_bus, bp->phy_addr) &&
+ 	    (sprom->boardflags_lo & (B44_BOARDFLAG_ROBO | B44_BOARDFLAG_ADM))) {
+ 
++		if (sprom->boardflags_lo & B44_BOARDFLAG_ADM)
++			b44_register_adm_switch(bp);
++
+ 		dev_info(sdev->dev,
+ 			 "could not find PHY at %i, use fixed one\n",
+ 			 bp->phy_addr);
+@@ -2473,6 +2541,7 @@ static void b44_remove_one(struct ssb_de
+ 	unregister_netdev(dev);
+ 	if (bp->flags & B44_FLAG_EXTERNAL_PHY)
+ 		b44_unregister_phy_one(bp);
++	b44_unregister_adm_switch(bp);
+ 	ssb_device_disable(sdev, 0);
+ 	ssb_bus_may_powerdown(sdev->bus);
+ 	netif_napi_del(&bp->napi);
+--- a/drivers/net/ethernet/broadcom/b44.h
++++ b/drivers/net/ethernet/broadcom/b44.h
+@@ -408,6 +408,9 @@ struct b44 {
+ 	struct mii_bus		*mii_bus;
+ 	int			old_link;
+ 	struct mii_if_info	mii_if;
++
++	/* platform device for associated switch */
++	struct platform_device *adm_switch;
+ };
+ 
+ #endif /* _B44_H */
diff --git a/target/linux/bcm47xx/patches-5.15/210-b44_phy_fix.patch b/target/linux/bcm47xx/patches-5.15/210-b44_phy_fix.patch
new file mode 100644
index 0000000000..bedebc415e
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/210-b44_phy_fix.patch
@@ -0,0 +1,54 @@
+--- a/drivers/net/ethernet/broadcom/b44.c
++++ b/drivers/net/ethernet/broadcom/b44.c
+@@ -429,10 +429,34 @@ static void b44_wap54g10_workaround(stru
+ error:
+ 	pr_warn("PHY: cannot reset MII transceiver isolate bit\n");
+ }
++
++static void b44_bcm47xx_workarounds(struct b44 *bp)
++{
++	char buf[20];
++	struct ssb_device *sdev = bp->sdev;
++
++	/* Toshiba WRC-1000, Siemens SE505 v1, Askey RT-210W, RT-220W */
++	if (sdev->bus->sprom.board_num == 100) {
++		bp->phy_addr = B44_PHY_ADDR_NO_LOCAL_PHY;
++	} else {
++		/* WL-HDD */
++		if (bcm47xx_nvram_getenv("hardware_version", buf, sizeof(buf)) >= 0 &&
++		    !strncmp(buf, "WL300-", strlen("WL300-"))) {
++			if (sdev->bus->sprom.et0phyaddr == 0 &&
++			    sdev->bus->sprom.et1phyaddr == 1)
++				bp->phy_addr = B44_PHY_ADDR_NO_LOCAL_PHY;
++		}
++	}
++	return;
++}
+ #else
+ static inline void b44_wap54g10_workaround(struct b44 *bp)
+ {
+ }
++
++static inline void b44_bcm47xx_workarounds(struct b44 *bp)
++{
++}
+ #endif
+ 
+ static int b44_setup_phy(struct b44 *bp)
+@@ -441,6 +465,7 @@ static int b44_setup_phy(struct b44 *bp)
+ 	int err;
+ 
+ 	b44_wap54g10_workaround(bp);
++	b44_bcm47xx_workarounds(bp);
+ 
+ 	if (bp->flags & B44_FLAG_EXTERNAL_PHY)
+ 		return 0;
+@@ -2173,6 +2198,8 @@ static int b44_get_invariants(struct b44
+ 	 * valid PHY address. */
+ 	bp->phy_addr &= 0x1F;
+ 
++	b44_bcm47xx_workarounds(bp);
++
+ 	memcpy(bp->dev->dev_addr, addr, ETH_ALEN);
+ 
+ 	if (!is_valid_ether_addr(&bp->dev->dev_addr[0])){
diff --git a/target/linux/bcm47xx/patches-5.15/280-activate_ssb_support_in_usb.patch b/target/linux/bcm47xx/patches-5.15/280-activate_ssb_support_in_usb.patch
new file mode 100644
index 0000000000..de8bb4297d
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/280-activate_ssb_support_in_usb.patch
@@ -0,0 +1,25 @@
+This prevents the options from being delete with make kernel_oldconfig.
+---
+ drivers/ssb/Kconfig |    2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/bcma/Kconfig
++++ b/drivers/bcma/Kconfig
+@@ -32,6 +32,7 @@ config BCMA_HOST_PCI
+ config BCMA_HOST_SOC
+ 	bool "Support for BCMA in a SoC"
+ 	depends on HAS_IOMEM
++	select USB_HCD_BCMA if USB_EHCI_HCD || USB_OHCI_HCD
+ 	help
+ 	  Host interface for a Broadcom AIX bus directly mapped into
+ 	  the memory. This only works with the Broadcom SoCs from the
+--- a/drivers/ssb/Kconfig
++++ b/drivers/ssb/Kconfig
+@@ -136,6 +136,7 @@ config SSB_SFLASH
+ config SSB_EMBEDDED
+ 	bool
+ 	depends on SSB_DRIVER_MIPS && SSB_PCICORE_HOSTMODE
++	select USB_HCD_SSB if USB_EHCI_HCD || USB_OHCI_HCD
+ 	default y
+ 
+ config SSB_DRIVER_EXTIF
diff --git a/target/linux/bcm47xx/patches-5.15/300-fork_cacheflush.patch b/target/linux/bcm47xx/patches-5.15/300-fork_cacheflush.patch
new file mode 100644
index 0000000000..daa2c1adf0
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/300-fork_cacheflush.patch
@@ -0,0 +1,21 @@
+From: Wolfram Joost <dbox2@frokaschwei.de>
+Subject: [PATCH] fork_cacheflush
+
+On ASUS WL-500gP there are many unexpected "Segmentation fault"s that
+seem to be caused by a kernel. They can be avoided by:
+1) Disabling highpage
+2) Using flush_cache_mm in flush_cache_dup_mm
+
+For details see OpenWrt ticket #2035 https://dev.openwrt.org/ticket/2035
+---
+--- a/arch/mips/include/asm/cacheflush.h
++++ b/arch/mips/include/asm/cacheflush.h
+@@ -46,7 +46,7 @@
+ extern void (*flush_cache_all)(void);
+ extern void (*__flush_cache_all)(void);
+ extern void (*flush_cache_mm)(struct mm_struct *mm);
+-#define flush_cache_dup_mm(mm)	do { (void) (mm); } while (0)
++#define flush_cache_dup_mm(mm) flush_cache_mm(mm)
+ extern void (*flush_cache_range)(struct vm_area_struct *vma,
+ 	unsigned long start, unsigned long end);
+ extern void (*flush_cache_page)(struct vm_area_struct *vma, unsigned long page, unsigned long pfn);
diff --git a/target/linux/bcm47xx/patches-5.15/310-no_highpage.patch b/target/linux/bcm47xx/patches-5.15/310-no_highpage.patch
new file mode 100644
index 0000000000..b1dcdf9cb2
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/310-no_highpage.patch
@@ -0,0 +1,74 @@
+From: Jeff Hansen <jhansen@cardaccess-inc.com>
+Subject: [PATCH] no highpage
+
+On ASUS WL-500gP there are many unexpected "Segmentation fault"s that
+seem to be caused by a kernel. They can be avoided by:
+1) Disabling highpage
+2) Using flush_cache_mm in flush_cache_dup_mm
+
+For details see OpenWrt ticket #2035 https://dev.openwrt.org/ticket/2035
+---
+--- a/arch/mips/include/asm/page.h
++++ b/arch/mips/include/asm/page.h
+@@ -71,6 +71,7 @@ static inline unsigned int page_size_ftl
+ #endif /* CONFIG_MIPS_HUGE_TLB_SUPPORT */
+ 
+ #include <linux/pfn.h>
++#include <asm/cpu-features.h>
+ 
+ extern void build_clear_page(void);
+ extern void build_copy_page(void);
+@@ -110,11 +111,16 @@ static inline void clear_user_page(void
+ 		flush_data_cache_page((unsigned long)addr);
+ }
+ 
+-struct vm_area_struct;
+-extern void copy_user_highpage(struct page *to, struct page *from,
+-	unsigned long vaddr, struct vm_area_struct *vma);
++static inline void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
++	struct page *to)
++{
++	extern void (*flush_data_cache_page)(unsigned long addr);
+ 
+-#define __HAVE_ARCH_COPY_USER_HIGHPAGE
++	copy_page(vto, vfrom);
++	if (!cpu_has_ic_fills_f_dc ||
++	    pages_do_alias((unsigned long)vto, vaddr & PAGE_MASK))
++		flush_data_cache_page((unsigned long)vto);
++}
+ 
+ /*
+  * These are used to make use of C type-checking..
+--- a/arch/mips/mm/init.c
++++ b/arch/mips/mm/init.c
+@@ -167,30 +167,6 @@ void kunmap_coherent(void)
+ 	preempt_enable();
+ }
+ 
+-void copy_user_highpage(struct page *to, struct page *from,
+-	unsigned long vaddr, struct vm_area_struct *vma)
+-{
+-	void *vfrom, *vto;
+-
+-	vto = kmap_atomic(to);
+-	if (cpu_has_dc_aliases && cpu_use_kmap_coherent &&
+-	    page_mapcount(from) && !Page_dcache_dirty(from)) {
+-		vfrom = kmap_coherent(from, vaddr);
+-		copy_page(vto, vfrom);
+-		kunmap_coherent();
+-	} else {
+-		vfrom = kmap_atomic(from);
+-		copy_page(vto, vfrom);
+-		kunmap_atomic(vfrom);
+-	}
+-	if ((!cpu_has_ic_fills_f_dc) ||
+-	    pages_do_alias((unsigned long)vto, vaddr & PAGE_MASK))
+-		flush_data_cache_page((unsigned long)vto);
+-	kunmap_atomic(vto);
+-	/* Make sure this page is cleared on other CPU's too before using it */
+-	smp_wmb();
+-}
+-
+ void copy_to_user_page(struct vm_area_struct *vma,
+ 	struct page *page, unsigned long vaddr, void *dst, const void *src,
+ 	unsigned long len)
diff --git a/target/linux/bcm47xx/patches-5.15/320-v5.17-MIPS-BCM47XX-Add-board-entry-for-Linksys-WRT320N-v1.patch b/target/linux/bcm47xx/patches-5.15/320-v5.17-MIPS-BCM47XX-Add-board-entry-for-Linksys-WRT320N-v1.patch
new file mode 100644
index 0000000000..f34336edd5
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/320-v5.17-MIPS-BCM47XX-Add-board-entry-for-Linksys-WRT320N-v1.patch
@@ -0,0 +1,89 @@
+From 3829e4f10a232964cc728c0479c8097922e5e073 Mon Sep 17 00:00:00 2001
+From: Florian Fainelli <f.fainelli@gmail.com>
+Date: Thu, 6 Jan 2022 19:51:38 -0800
+Subject: [PATCH] MIPS: BCM47XX: Add board entry for Linksys WRT320N v1
+
+This router is based on a Broadcom BCM4717A1 chipset and supports
+802.11n Wi-Fi. Add a board entry for that router and register LEDs and
+buttons accordingly.
+
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
+---
+ arch/mips/bcm47xx/board.c                          |  1 +
+ arch/mips/bcm47xx/buttons.c                        |  9 +++++++++
+ arch/mips/bcm47xx/leds.c                           | 10 ++++++++++
+ arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h |  1 +
+ 4 files changed, 21 insertions(+)
+
+--- a/arch/mips/bcm47xx/board.c
++++ b/arch/mips/bcm47xx/board.c
+@@ -141,6 +141,7 @@ struct bcm47xx_board_type_list2 bcm47xx_
+ 	{{BCM47XX_BOARD_LINKSYS_WRT300NV11, "Linksys WRT300N V1.1"}, "WRT300N", "1.1"},
+ 	{{BCM47XX_BOARD_LINKSYS_WRT310NV1, "Linksys WRT310N V1"}, "WRT310N", "1.0"},
+ 	{{BCM47XX_BOARD_LINKSYS_WRT310NV2, "Linksys WRT310N V2"}, "WRT310N", "2.0"},
++	{{BCM47XX_BOARD_LINKSYS_WRT320N_V1, "Linksys WRT320N V1"}, "WRT320N", "1.0"},
+ 	{{BCM47XX_BOARD_LINKSYS_WRT54G3GV2, "Linksys WRT54G3GV2-VF"}, "WRT54G3GV2-VF", "1.0"},
+ 	{{BCM47XX_BOARD_LINKSYS_WRT610NV1, "Linksys WRT610N V1"}, "WRT610N", "1.0"},
+ 	{{BCM47XX_BOARD_LINKSYS_WRT610NV2, "Linksys WRT610N V2"}, "WRT610N", "2.0"},
+--- a/arch/mips/bcm47xx/buttons.c
++++ b/arch/mips/bcm47xx/buttons.c
+@@ -277,6 +277,12 @@ bcm47xx_buttons_linksys_wrt310nv1[] __in
+ };
+ 
+ static const struct gpio_keys_button
++bcm47xx_buttons_linksys_wrt320n_v1[] __initconst = {
++	BCM47XX_GPIO_KEY(5, KEY_WPS_BUTTON),
++	BCM47XX_GPIO_KEY(8, KEY_RESTART),
++};
++
++static const struct gpio_keys_button
+ bcm47xx_buttons_linksys_wrt54g3gv2[] __initconst = {
+ 	BCM47XX_GPIO_KEY(5, KEY_WIMAX),
+ 	BCM47XX_GPIO_KEY(6, KEY_RESTART),
+@@ -608,6 +614,9 @@ int __init bcm47xx_buttons_register(void
+ 	case BCM47XX_BOARD_LINKSYS_WRT310NV1:
+ 		err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt310nv1);
+ 		break;
++	case BCM47XX_BOARD_LINKSYS_WRT320N_V1:
++		err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt320n_v1);
++		break;
+ 	case BCM47XX_BOARD_LINKSYS_WRT54G3GV2:
+ 		err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt54g3gv2);
+ 		break;
+--- a/arch/mips/bcm47xx/leds.c
++++ b/arch/mips/bcm47xx/leds.c
+@@ -314,6 +314,13 @@ bcm47xx_leds_linksys_wrt310nv1[] __initc
+ };
+ 
+ static const struct gpio_led
++bcm47xx_leds_linksys_wrt320n_v1[] __initconst = {
++	BCM47XX_GPIO_LED(1, "blue", "wlan", 1, LEDS_GPIO_DEFSTATE_OFF),
++	BCM47XX_GPIO_LED(2, "blue", "power", 0, LEDS_GPIO_DEFSTATE_ON),
++	BCM47XX_GPIO_LED(4, "amber", "wps", 1, LEDS_GPIO_DEFSTATE_OFF),
++};
++
++static const struct gpio_led
+ bcm47xx_leds_linksys_wrt54g_generic[] __initconst = {
+ 	BCM47XX_GPIO_LED(0, "unk", "dmz", 1, LEDS_GPIO_DEFSTATE_OFF),
+ 	BCM47XX_GPIO_LED(1, "unk", "power", 0, LEDS_GPIO_DEFSTATE_ON),
+@@ -689,6 +696,9 @@ void __init bcm47xx_leds_register(void)
+ 	case BCM47XX_BOARD_LINKSYS_WRT310NV1:
+ 		bcm47xx_set_pdata(bcm47xx_leds_linksys_wrt310nv1);
+ 		break;
++	case BCM47XX_BOARD_LINKSYS_WRT320N_V1:
++		bcm47xx_set_pdata(bcm47xx_leds_linksys_wrt320n_v1);
++		break;
+ 	case BCM47XX_BOARD_LINKSYS_WRT54G3GV2:
+ 		bcm47xx_set_pdata(bcm47xx_leds_linksys_wrt54g3gv2);
+ 		break;
+--- a/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
++++ b/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
+@@ -72,6 +72,7 @@ enum bcm47xx_board {
+ 	BCM47XX_BOARD_LINKSYS_WRT300NV11,
+ 	BCM47XX_BOARD_LINKSYS_WRT310NV1,
+ 	BCM47XX_BOARD_LINKSYS_WRT310NV2,
++	BCM47XX_BOARD_LINKSYS_WRT320N_V1,
+ 	BCM47XX_BOARD_LINKSYS_WRT54G3GV2,
+ 	BCM47XX_BOARD_LINKSYS_WRT54G_TYPE_0101,
+ 	BCM47XX_BOARD_LINKSYS_WRT54G_TYPE_0467,
diff --git a/target/linux/bcm47xx/patches-5.15/321-v5.17-MIPS-BCM47XX-Add-support-for-Netgear-R6300-v1.patch b/target/linux/bcm47xx/patches-5.15/321-v5.17-MIPS-BCM47XX-Add-support-for-Netgear-R6300-v1.patch
new file mode 100644
index 0000000000..6631e79048
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/321-v5.17-MIPS-BCM47XX-Add-support-for-Netgear-R6300-v1.patch
@@ -0,0 +1,60 @@
+From 15e690af5cc3cd8f5d14ee2aa3a093f80196110e Mon Sep 17 00:00:00 2001
+From: Florian Fainelli <f.fainelli@gmail.com>
+Date: Thu, 6 Jan 2022 19:51:40 -0800
+Subject: [PATCH] MIPS: BCM47XX: Add support for Netgear R6300 v1
+
+Add support for the Netgear R6300 v1 Wi-Fi router using a Broadcom
+BCM4706 chipset and supporting 802.11n and 802.11ac.
+
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
+---
+ arch/mips/bcm47xx/board.c                          | 1 +
+ arch/mips/bcm47xx/buttons.c                        | 8 ++++++++
+ arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h | 1 +
+ 3 files changed, 10 insertions(+)
+
+--- a/arch/mips/bcm47xx/board.c
++++ b/arch/mips/bcm47xx/board.c
+@@ -162,6 +162,7 @@ struct bcm47xx_board_type_list1 bcm47xx_
+ 	{{BCM47XX_BOARD_LUXUL_XWR_600_V1, "Luxul XWR-600 V1"}, "luxul_xwr600_v1"},
+ 	{{BCM47XX_BOARD_LUXUL_XWR_1750_V1, "Luxul XWR-1750 V1"}, "luxul_xwr1750_v1"},
+ 	{{BCM47XX_BOARD_NETGEAR_R6200_V1, "Netgear R6200 V1"}, "U12H192T00_NETGEAR"},
++	{{BCM47XX_BOARD_NETGEAR_R6300_V1, "Netgear R6300 V1"}, "U12H218T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WGR614V8, "Netgear WGR614 V8"}, "U12H072T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WGR614V9, "Netgear WGR614 V9"}, "U12H094T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WGR614_V10, "Netgear WGR614 V10"}, "U12H139T01_NETGEAR"},
+--- a/arch/mips/bcm47xx/buttons.c
++++ b/arch/mips/bcm47xx/buttons.c
+@@ -398,6 +398,11 @@ bcm47xx_buttons_netgear_r6200_v1[] __ini
+ };
+ 
+ static const struct gpio_keys_button
++bcm47xx_buttons_netgear_r6300_v1[] __initconst = {
++	BCM47XX_GPIO_KEY(6, KEY_RESTART),
++};
++
++static const struct gpio_keys_button
+ bcm47xx_buttons_netgear_wndr3400v1[] __initconst = {
+ 	BCM47XX_GPIO_KEY(4, KEY_RESTART),
+ 	BCM47XX_GPIO_KEY(6, KEY_WPS_BUTTON),
+@@ -683,6 +688,9 @@ int __init bcm47xx_buttons_register(void
+ 	case BCM47XX_BOARD_NETGEAR_R6200_V1:
+ 		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_r6200_v1);
+ 		break;
++	case BCM47XX_BOARD_NETGEAR_R6300_V1:
++		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_r6300_v1);
++		break;
+ 	case BCM47XX_BOARD_NETGEAR_WNDR3400V1:
+ 		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wndr3400v1);
+ 		break;
+--- a/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
++++ b/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
+@@ -100,6 +100,7 @@ enum bcm47xx_board {
+ 	BCM47XX_BOARD_MOTOROLA_WR850GV2V3,
+ 
+ 	BCM47XX_BOARD_NETGEAR_R6200_V1,
++	BCM47XX_BOARD_NETGEAR_R6300_V1,
+ 	BCM47XX_BOARD_NETGEAR_WGR614V8,
+ 	BCM47XX_BOARD_NETGEAR_WGR614V9,
+ 	BCM47XX_BOARD_NETGEAR_WGR614_V10,
diff --git a/target/linux/bcm47xx/patches-5.15/322-v5.17-MIPS-BCM47XX-Add-support-for-Netgear-WN2500RP-v1-v2.patch b/target/linux/bcm47xx/patches-5.15/322-v5.17-MIPS-BCM47XX-Add-support-for-Netgear-WN2500RP-v1-v2.patch
new file mode 100644
index 0000000000..8f66aee192
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/322-v5.17-MIPS-BCM47XX-Add-support-for-Netgear-WN2500RP-v1-v2.patch
@@ -0,0 +1,63 @@
+From 4da27b6d550427a0560a15df36de99cb17629216 Mon Sep 17 00:00:00 2001
+From: Florian Fainelli <f.fainelli@gmail.com>
+Date: Thu, 6 Jan 2022 19:51:41 -0800
+Subject: [PATCH] MIPS: BCM47XX: Add support for Netgear WN2500RP v1 & v2
+
+Add support for the Netgear WN2500 RP v1 and v2 Wi-Fi range extenders
+based on the BCM5357 chipset and supporting 802.11n and 802.11ac.
+
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
+---
+ arch/mips/bcm47xx/board.c                          | 2 ++
+ arch/mips/bcm47xx/buttons.c                        | 9 +++++++++
+ arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h | 2 ++
+ 3 files changed, 13 insertions(+)
+
+--- a/arch/mips/bcm47xx/board.c
++++ b/arch/mips/bcm47xx/board.c
+@@ -166,6 +166,8 @@ struct bcm47xx_board_type_list1 bcm47xx_
+ 	{{BCM47XX_BOARD_NETGEAR_WGR614V8, "Netgear WGR614 V8"}, "U12H072T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WGR614V9, "Netgear WGR614 V9"}, "U12H094T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WGR614_V10, "Netgear WGR614 V10"}, "U12H139T01_NETGEAR"},
++	{{BCM47XX_BOARD_NETGEAR_WN2500RP_V1, "Netgear WN2500RP V1"}, "U12H197T00_NETGEAR"},
++	{{BCM47XX_BOARD_NETGEAR_WN2500RP_V2, "Netgear WN2500RP V2"}, "U12H294T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WNDR3300, "Netgear WNDR3300"}, "U12H093T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WNDR3400V1, "Netgear WNDR3400 V1"}, "U12H155T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WNDR3400V2, "Netgear WNDR3400 V2"}, "U12H187T00_NETGEAR"},
+--- a/arch/mips/bcm47xx/buttons.c
++++ b/arch/mips/bcm47xx/buttons.c
+@@ -403,6 +403,12 @@ bcm47xx_buttons_netgear_r6300_v1[] __ini
+ };
+ 
+ static const struct gpio_keys_button
++bcm47xx_buttons_netgear_wn2500rp_v1[] __initconst = {
++	BCM47XX_GPIO_KEY(12, KEY_RESTART),
++	BCM47XX_GPIO_KEY(31, KEY_WPS_BUTTON),
++};
++
++static const struct gpio_keys_button
+ bcm47xx_buttons_netgear_wndr3400v1[] __initconst = {
+ 	BCM47XX_GPIO_KEY(4, KEY_RESTART),
+ 	BCM47XX_GPIO_KEY(6, KEY_WPS_BUTTON),
+@@ -691,6 +697,9 @@ int __init bcm47xx_buttons_register(void
+ 	case BCM47XX_BOARD_NETGEAR_R6300_V1:
+ 		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_r6300_v1);
+ 		break;
++	case BCM47XX_BOARD_NETGEAR_WN2500RP_V1:
++		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wn2500rp_v1);
++		break;
+ 	case BCM47XX_BOARD_NETGEAR_WNDR3400V1:
+ 		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wndr3400v1);
+ 		break;
+--- a/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
++++ b/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
+@@ -104,6 +104,8 @@ enum bcm47xx_board {
+ 	BCM47XX_BOARD_NETGEAR_WGR614V8,
+ 	BCM47XX_BOARD_NETGEAR_WGR614V9,
+ 	BCM47XX_BOARD_NETGEAR_WGR614_V10,
++	BCM47XX_BOARD_NETGEAR_WN2500RP_V1,
++	BCM47XX_BOARD_NETGEAR_WN2500RP_V2,
+ 	BCM47XX_BOARD_NETGEAR_WNDR3300,
+ 	BCM47XX_BOARD_NETGEAR_WNDR3400V1,
+ 	BCM47XX_BOARD_NETGEAR_WNDR3400V2,
diff --git a/target/linux/bcm47xx/patches-5.15/323-v6.0-MIPS-BCM47XX-Add-support-for-Netgear-WNR3500L-v2.patch b/target/linux/bcm47xx/patches-5.15/323-v6.0-MIPS-BCM47XX-Add-support-for-Netgear-WNR3500L-v2.patch
new file mode 100644
index 0000000000..272a74933b
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/323-v6.0-MIPS-BCM47XX-Add-support-for-Netgear-WNR3500L-v2.patch
@@ -0,0 +1,109 @@
+From c022e87162219d67d687df22c977d1c2fc95fb42 Mon Sep 17 00:00:00 2001
+From: Florian Fainelli <f.fainelli@gmail.com>
+Date: Thu, 14 Jul 2022 14:13:01 -0700
+Subject: [PATCH] MIPS: BCM47XX: Add support for Netgear WNR3500L v2
+
+Add support for the Netgear WNR3500L v2 router based on the BCM47186
+chipset and supporting 802.11n Wi-Fi.
+
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
+---
+ arch/mips/bcm47xx/board.c                          |  2 ++
+ arch/mips/bcm47xx/buttons.c                        | 10 ++++++++++
+ arch/mips/bcm47xx/leds.c                           | 11 +++++++++++
+ arch/mips/bcm47xx/workarounds.c                    |  1 +
+ arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h |  1 +
+ 5 files changed, 25 insertions(+)
+
+--- a/arch/mips/bcm47xx/board.c
++++ b/arch/mips/bcm47xx/board.c
+@@ -181,6 +181,7 @@ struct bcm47xx_board_type_list1 bcm47xx_
+ 	{{BCM47XX_BOARD_NETGEAR_WNR1000_V3, "Netgear WNR1000 V3"}, "U12H139T50_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WNR2000, "Netgear WNR2000"}, "U12H114T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WNR3500L, "Netgear WNR3500L"}, "U12H136T99_NETGEAR"},
++	{{BCM47XX_BOARD_NETGEAR_WNR3500L_V2, "Netgear WNR3500L V2"}, "U12H172T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WNR3500U, "Netgear WNR3500U"}, "U12H136T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WNR3500V2, "Netgear WNR3500 V2"}, "U12H127T00_NETGEAR"},
+ 	{{BCM47XX_BOARD_NETGEAR_WNR3500V2VC, "Netgear WNR3500 V2vc"}, "U12H127T70_NETGEAR"},
+@@ -195,6 +196,7 @@ struct bcm47xx_board_type_list3 bcm47xx_
+ 	{{BCM47XX_BOARD_PHICOMM_M1, "Phicomm M1"}, "0x0590", "80", "0x1104"},
+ 	{{BCM47XX_BOARD_ZTE_H218N, "ZTE H218N"}, "0x053d", "1234", "0x1305"},
+ 	{{BCM47XX_BOARD_NETGEAR_WNR3500L, "Netgear WNR3500L"}, "0x04CF", "3500", "02"},
++	{{BCM47XX_BOARD_NETGEAR_WNR3500L_V2, "Netgear WNR3500L V2"}, "0x052b", "3500L", "02"},
+ 	{{BCM47XX_BOARD_LINKSYS_WRT54G_TYPE_0101, "Linksys WRT54G/GS/GL"}, "0x0101", "42", "0x10"},
+ 	{{BCM47XX_BOARD_LINKSYS_WRT54G_TYPE_0467, "Linksys WRT54G/GS/GL"}, "0x0467", "42", "0x10"},
+ 	{{BCM47XX_BOARD_LINKSYS_WRT54G_TYPE_0708, "Linksys WRT54G/GS/GL"}, "0x0708", "42", "0x10"},
+--- a/arch/mips/bcm47xx/buttons.c
++++ b/arch/mips/bcm47xx/buttons.c
+@@ -448,6 +448,13 @@ bcm47xx_buttons_netgear_wnr3500lv1[] __i
+ };
+ 
+ static const struct gpio_keys_button
++bcm47xx_buttons_netgear_wnr3500lv2[] __initconst = {
++	BCM47XX_GPIO_KEY(4, KEY_RESTART),
++	BCM47XX_GPIO_KEY(6, KEY_WPS_BUTTON),
++	BCM47XX_GPIO_KEY(8, KEY_RFKILL),
++};
++
++static const struct gpio_keys_button
+ bcm47xx_buttons_netgear_wnr834bv2[] __initconst = {
+ 	BCM47XX_GPIO_KEY(6, KEY_RESTART),
+ };
+@@ -718,6 +725,9 @@ int __init bcm47xx_buttons_register(void
+ 	case BCM47XX_BOARD_NETGEAR_WNR3500L:
+ 		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wnr3500lv1);
+ 		break;
++	case BCM47XX_BOARD_NETGEAR_WNR3500L_V2:
++		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wnr3500lv2);
++		break;
+ 	case BCM47XX_BOARD_NETGEAR_WNR834BV2:
+ 		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wnr834bv2);
+ 		break;
+--- a/arch/mips/bcm47xx/leds.c
++++ b/arch/mips/bcm47xx/leds.c
+@@ -520,6 +520,14 @@ bcm47xx_leds_netgear_wnr3500lv1[] __init
+ };
+ 
+ static const struct gpio_led
++bcm47xx_leds_netgear_wnr3500lv2[] __initconst = {
++	BCM47XX_GPIO_LED(0, "blue", "wlan", 0, LEDS_GPIO_DEFSTATE_OFF),
++	BCM47XX_GPIO_LED(1, "green", "wps", 0, LEDS_GPIO_DEFSTATE_OFF),
++	BCM47XX_GPIO_LED(3, "green", "power", 0, LEDS_GPIO_DEFSTATE_ON),
++	BCM47XX_GPIO_LED(7, "amber", "power", 0, LEDS_GPIO_DEFSTATE_OFF),
++};
++
++static const struct gpio_led
+ bcm47xx_leds_netgear_wnr834bv2[] __initconst = {
+ 	BCM47XX_GPIO_LED(2, "green", "power", 0, LEDS_GPIO_DEFSTATE_ON),
+ 	BCM47XX_GPIO_LED(3, "amber", "power", 0, LEDS_GPIO_DEFSTATE_OFF),
+@@ -780,6 +788,9 @@ void __init bcm47xx_leds_register(void)
+ 	case BCM47XX_BOARD_NETGEAR_WNR3500L:
+ 		bcm47xx_set_pdata(bcm47xx_leds_netgear_wnr3500lv1);
+ 		break;
++	case BCM47XX_BOARD_NETGEAR_WNR3500L_V2:
++		bcm47xx_set_pdata(bcm47xx_leds_netgear_wnr3500lv2);
++		break;
+ 	case BCM47XX_BOARD_NETGEAR_WNR834BV2:
+ 		bcm47xx_set_pdata(bcm47xx_leds_netgear_wnr834bv2);
+ 		break;
+--- a/arch/mips/bcm47xx/workarounds.c
++++ b/arch/mips/bcm47xx/workarounds.c
+@@ -22,6 +22,7 @@ void __init bcm47xx_workarounds(void)
+ 
+ 	switch (board) {
+ 	case BCM47XX_BOARD_NETGEAR_WNR3500L:
++	case BCM47XX_BOARD_NETGEAR_WNR3500L_V2:
+ 		bcm47xx_workarounds_enable_usb_power(12);
+ 		break;
+ 	case BCM47XX_BOARD_NETGEAR_WNDR3400V2:
+--- a/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
++++ b/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
+@@ -118,6 +118,7 @@ enum bcm47xx_board {
+ 	BCM47XX_BOARD_NETGEAR_WNR1000_V3,
+ 	BCM47XX_BOARD_NETGEAR_WNR2000,
+ 	BCM47XX_BOARD_NETGEAR_WNR3500L,
++	BCM47XX_BOARD_NETGEAR_WNR3500L_V2,
+ 	BCM47XX_BOARD_NETGEAR_WNR3500U,
+ 	BCM47XX_BOARD_NETGEAR_WNR3500V2,
+ 	BCM47XX_BOARD_NETGEAR_WNR3500V2VC,
diff --git a/target/linux/bcm47xx/patches-5.15/324-v5.17-MIPS-BCM47XX-Add-LEDs-and-buttons-for-Asus-RTN-10U.patch b/target/linux/bcm47xx/patches-5.15/324-v5.17-MIPS-BCM47XX-Add-LEDs-and-buttons-for-Asus-RTN-10U.patch
new file mode 100644
index 0000000000..23d50ad902
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/324-v5.17-MIPS-BCM47XX-Add-LEDs-and-buttons-for-Asus-RTN-10U.patch
@@ -0,0 +1,67 @@
+From aecf89f2f8e8a604c33085c230a1f04ea325de64 Mon Sep 17 00:00:00 2001
+From: Florian Fainelli <f.fainelli@gmail.com>
+Date: Thu, 6 Jan 2022 19:51:39 -0800
+Subject: [PATCH] MIPS: BCM47XX: Add LEDs and buttons for Asus RTN-10U
+
+Add the definitions for the buttons and LEDs used on the Asus RTN-10U
+router.
+
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
+---
+ arch/mips/bcm47xx/buttons.c |  9 +++++++++
+ arch/mips/bcm47xx/leds.c    | 11 +++++++++++
+ 2 files changed, 20 insertions(+)
+
+--- a/arch/mips/bcm47xx/buttons.c
++++ b/arch/mips/bcm47xx/buttons.c
+@@ -27,6 +27,12 @@
+ /* Asus */
+ 
+ static const struct gpio_keys_button
++bcm47xx_buttons_asus_rtn10u[] __initconst = {
++	BCM47XX_GPIO_KEY(20, KEY_WPS_BUTTON),
++	BCM47XX_GPIO_KEY(21, KEY_RESTART),
++};
++
++static const struct gpio_keys_button
+ bcm47xx_buttons_asus_rtn12[] __initconst = {
+ 	BCM47XX_GPIO_KEY(0, KEY_WPS_BUTTON),
+ 	BCM47XX_GPIO_KEY(1, KEY_RESTART),
+@@ -502,6 +508,9 @@ int __init bcm47xx_buttons_register(void
+ 	int err;
+ 
+ 	switch (board) {
++	case BCM47XX_BOARD_ASUS_RTN10U:
++		err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_rtn10u);
++		break;
+ 	case BCM47XX_BOARD_ASUS_RTN12:
+ 		err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_rtn12);
+ 		break;
+--- a/arch/mips/bcm47xx/leds.c
++++ b/arch/mips/bcm47xx/leds.c
+@@ -30,6 +30,14 @@
+ /* Asus */
+ 
+ static const struct gpio_led
++bcm47xx_leds_asus_rtn10u[] __initconst = {
++	BCM47XX_GPIO_LED(5, "green", "wlan", 0, LEDS_GPIO_DEFSTATE_OFF),
++	BCM47XX_GPIO_LED(6, "green", "power", 1, LEDS_GPIO_DEFSTATE_ON),
++	BCM47XX_GPIO_LED(7, "green", "wps", 0, LEDS_GPIO_DEFSTATE_OFF),
++	BCM47XX_GPIO_LED(8, "green", "usb", 0, LEDS_GPIO_DEFSTATE_OFF),
++};
++
++static const struct gpio_led
+ bcm47xx_leds_asus_rtn12[] __initconst = {
+ 	BCM47XX_GPIO_LED(2, "unk", "power", 1, LEDS_GPIO_DEFSTATE_ON),
+ 	BCM47XX_GPIO_LED(7, "unk", "wlan", 0, LEDS_GPIO_DEFSTATE_OFF),
+@@ -571,6 +579,9 @@ void __init bcm47xx_leds_register(void)
+ 	enum bcm47xx_board board = bcm47xx_board_get();
+ 
+ 	switch (board) {
++	case BCM47XX_BOARD_ASUS_RTN10U:
++		bcm47xx_set_pdata(bcm47xx_leds_asus_rtn10u);
++		break;
+ 	case BCM47XX_BOARD_ASUS_RTN12:
+ 		bcm47xx_set_pdata(bcm47xx_leds_asus_rtn12);
+ 		break;
diff --git a/target/linux/bcm47xx/patches-5.15/325-v5.17-MIPS-BCM47XX-Define-Linksys-WRT310N-V2-buttons.patch b/target/linux/bcm47xx/patches-5.15/325-v5.17-MIPS-BCM47XX-Define-Linksys-WRT310N-V2-buttons.patch
new file mode 100644
index 0000000000..0c23e8aaf5
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/325-v5.17-MIPS-BCM47XX-Define-Linksys-WRT310N-V2-buttons.patch
@@ -0,0 +1,40 @@
+From eea175eedf3e2f71b9538d21e643e7a1be4923df Mon Sep 17 00:00:00 2001
+From: Florian Fainelli <f.fainelli@gmail.com>
+Date: Thu, 6 Jan 2022 19:51:37 -0800
+Subject: [PATCH] MIPS: BCM47XX: Define Linksys WRT310N V2 buttons
+
+Update the buttons registration code to register the two buttons (WPS,
+system rester) using the existing BCM47XX_BOARD_LINKSYS_WRT310NV2 board
+entry.
+
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
+---
+ arch/mips/bcm47xx/buttons.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+--- a/arch/mips/bcm47xx/buttons.c
++++ b/arch/mips/bcm47xx/buttons.c
+@@ -289,6 +289,12 @@ bcm47xx_buttons_linksys_wrt320n_v1[] __i
+ };
+ 
+ static const struct gpio_keys_button
++bcm47xx_buttons_linksys_wrt310n_v2[] __initconst = {
++	BCM47XX_GPIO_KEY(5, KEY_WPS_BUTTON),
++	BCM47XX_GPIO_KEY(6, KEY_RESTART),
++};
++
++static const struct gpio_keys_button
+ bcm47xx_buttons_linksys_wrt54g3gv2[] __initconst = {
+ 	BCM47XX_GPIO_KEY(5, KEY_WIMAX),
+ 	BCM47XX_GPIO_KEY(6, KEY_RESTART),
+@@ -644,6 +650,9 @@ int __init bcm47xx_buttons_register(void
+ 	case BCM47XX_BOARD_LINKSYS_WRT320N_V1:
+ 		err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt320n_v1);
+ 		break;
++	case BCM47XX_BOARD_LINKSYS_WRT310NV2:
++		err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt310n_v2);
++		break;
+ 	case BCM47XX_BOARD_LINKSYS_WRT54G3GV2:
+ 		err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt54g3gv2);
+ 		break;
diff --git a/target/linux/bcm47xx/patches-5.15/400-mtd-bcm47xxpart-get-nvram.patch b/target/linux/bcm47xx/patches-5.15/400-mtd-bcm47xxpart-get-nvram.patch
new file mode 100644
index 0000000000..17abe89d1d
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/400-mtd-bcm47xxpart-get-nvram.patch
@@ -0,0 +1,34 @@
+--- a/drivers/mtd/parsers/bcm47xxpart.c
++++ b/drivers/mtd/parsers/bcm47xxpart.c
+@@ -98,6 +98,7 @@ static int bcm47xxpart_parse(struct mtd_
+ 	int trx_num = 0; /* Number of found TRX partitions */
+ 	int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
+ 	int err;
++	bool found_nvram = false;
+ 
+ 	/*
+ 	 * Some really old flashes (like AT45DB*) had smaller erasesize-s, but
+@@ -279,12 +280,23 @@ static int bcm47xxpart_parse(struct mtd_
+ 		if (buf[0] == NVRAM_HEADER) {
+ 			bcm47xxpart_add_part(&parts[curr_part++], "nvram",
+ 					     master->size - blocksize, 0);
++			found_nvram = true;
+ 			break;
+ 		}
+ 	}
+ 
+ 	kfree(buf);
+ 
++	if (!found_nvram) {
++		pr_err("can not find a nvram partition reserve last block\n");
++		bcm47xxpart_add_part(&parts[curr_part++], "nvram_guess",
++				     master->size - blocksize * 2, MTD_WRITEABLE);
++		for (i = 0; i < curr_part; i++) {
++			if (parts[i].size + parts[i].offset == master->size)
++				parts[i].offset -= blocksize * 2;
++		}
++	}
++
+ 	/*
+ 	 * Assume that partitions end at the beginning of the one they are
+ 	 * followed by.
diff --git a/target/linux/bcm47xx/patches-5.15/610-pci_ide_fix.patch b/target/linux/bcm47xx/patches-5.15/610-pci_ide_fix.patch
new file mode 100644
index 0000000000..520828e8e5
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/610-pci_ide_fix.patch
@@ -0,0 +1,41 @@
+From: b.sander
+Subject: [PATCH] pci: IDE fix
+
+These are standard probing messages when using pdc202xx_old:
+pdc202xx_old 0000:00:01.0: IDE controller (0x105a:0x0d30 rev 0x02)
+PCI: Enabling device 0000:00:01.0 (0004 -> 0007)
+PCI: Fixing up device 0000:00:01.0
+0000:00:01.0: (U)DMA Burst Bit DISABLED Primary PCI Mode Secondary PCI Mode.
+0000:00:01.0: FORCING BURST BIT 0x00->0x01 ACTIVE
+pdc202xx_old 0000:00:01.0: 100% native mode on irq 6
+
+With the default MAX_HWIFS value after above we get:
+    ide2: BM-DMA at 0x0400-0x0407
+    ide3: BM-DMA at 0x0408-0x040f
+Probing IDE interface ide2...
+hde: CF500, CFA DISK drive
+
+As you can see it's ide2 + ide3 and hde.
+
+With this patch applied we get:
+    ide0: BM-DMA at 0x0400-0x0407
+    ide1: BM-DMA at 0x0408-0x040f
+Probing IDE interface ide0...
+hda: CF500, CFA DISK drive
+
+This fixes OpenWrt ticket #7061: https://dev.openwrt.org/ticket/7061
+---
+--- a/include/linux/ide.h
++++ b/include/linux/ide.h
+@@ -236,7 +236,11 @@ static inline void ide_std_init_ports(st
+ 	hw->io_ports.ctl_addr = ctl_addr;
+ }
+ 
++#if defined CONFIG_BCM47XX
++# define MAX_HWIFS	2
++#else
+ #define MAX_HWIFS	10
++#endif
+ 
+ /*
+  * Now for the data we need to maintain per-drive:  ide_drive_t
diff --git a/target/linux/bcm47xx/patches-5.15/700-net-bgmac-connect-to-PHY-even-if-it-is-BGMAC_PHY_NOR.patch b/target/linux/bcm47xx/patches-5.15/700-net-bgmac-connect-to-PHY-even-if-it-is-BGMAC_PHY_NOR.patch
new file mode 100644
index 0000000000..2fcfbb7438
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/700-net-bgmac-connect-to-PHY-even-if-it-is-BGMAC_PHY_NOR.patch
@@ -0,0 +1,42 @@
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Sun, 7 Nov 2021 14:20:40 +0100
+Subject: [PATCH] net: bgmac: connect to PHY even if it is BGMAC_PHY_NOREGS
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Recent bgmac change was meant to just fix a race between "Generic PHY"
+and "bcm53xx" drivers after -EPROBE_DEFER. It modified bgmac to use
+phy_connect() only if there is a real PHY device connected.
+
+That change broke bgmac on bcm47xx. bcma_phy_connect() now registers a
+fixed PHY with the bgmac_phy_connect_direct(). That fails as another
+fixed PHY (also using address 0) is already registered - by bcm47xx arch
+code bcm47xx_register_bus_complete().
+
+This change brings origial behaviour. It connects Ethernet interface
+with pseudo-PHY (switch device) and adjusts Ethernet interface link to
+match connected switch.
+
+This fixes:
+[    2.548098] bgmac_bcma bcma0:1: Failed to register fixed PHY device
+[    2.554584] bgmac_bcma bcma0:1: Cannot connect to phy
+
+Fixes: b5375509184d ("net: bgmac: improve handling PHY")
+Link: https://lore.kernel.org/netdev/3639116e-9292-03ca-b9d9-d741118a4541@gmail.com/T/#u
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+---
+ drivers/net/ethernet/broadcom/bgmac-bcma.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
++++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
+@@ -94,7 +94,7 @@ static int bcma_phy_connect(struct bgmac
+ 		return 0;
+ 
+ 	/* Connect to the PHY */
+-	if (bgmac->mii_bus && bgmac->phyaddr != BGMAC_PHY_NOREGS) {
++	if (bgmac->mii_bus) {
+ 		snprintf(bus_id, sizeof(bus_id), PHY_ID_FMT, bgmac->mii_bus->id,
+ 			 bgmac->phyaddr);
+ 		phy_dev = phy_connect(bgmac->net_dev, bus_id, bgmac_adjust_link,
diff --git a/target/linux/bcm47xx/patches-5.15/791-tg3-no-pci-sleep.patch b/target/linux/bcm47xx/patches-5.15/791-tg3-no-pci-sleep.patch
new file mode 100644
index 0000000000..50edfc3b41
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/791-tg3-no-pci-sleep.patch
@@ -0,0 +1,17 @@
+When the Ethernet controller is powered down and someone wants to 
+access the mdio bus like the witch driver (b53) the system crashed if 
+PCI_D3hot was set before. This patch deactivates this power sawing mode 
+when a switch driver is in use.
+
+--- a/drivers/net/ethernet/broadcom/tg3.c
++++ b/drivers/net/ethernet/broadcom/tg3.c
+@@ -4273,7 +4273,8 @@ static int tg3_power_down_prepare(struct
+ static void tg3_power_down(struct tg3 *tp)
+ {
+ 	pci_wake_from_d3(tp->pdev, tg3_flag(tp, WOL_ENABLE));
+-	pci_set_power_state(tp->pdev, PCI_D3hot);
++	if (!tg3_flag(tp, ROBOSWITCH))
++		pci_set_power_state(tp->pdev, PCI_D3hot);
+ }
+ 
+ static void tg3_aux_stat_to_speed_duplex(struct tg3 *tp, u32 val, u32 *speed, u8 *duplex)
diff --git a/target/linux/bcm47xx/patches-5.15/800-bcma-add-table-of-serial-flashes-with-smaller-blocks.patch b/target/linux/bcm47xx/patches-5.15/800-bcma-add-table-of-serial-flashes-with-smaller-blocks.patch
new file mode 100644
index 0000000000..318dc55810
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/800-bcma-add-table-of-serial-flashes-with-smaller-blocks.patch
@@ -0,0 +1,73 @@
+From 597715c61ae75a05ab3310a34ff3857a006f0f63 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Thu, 20 Nov 2014 21:32:42 +0100
+Subject: [PATCH] bcma: add table of serial flashes with smaller blocks
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+---
+ drivers/bcma/driver_chipcommon_sflash.c | 29 +++++++++++++++++++++++++++++
+ 1 file changed, 29 insertions(+)
+
+--- a/drivers/bcma/driver_chipcommon_sflash.c
++++ b/drivers/bcma/driver_chipcommon_sflash.c
+@@ -9,6 +9,7 @@
+ 
+ #include <linux/platform_device.h>
+ #include <linux/bcma/bcma.h>
++#include <bcm47xx_board.h>
+ 
+ static struct resource bcma_sflash_resource = {
+ 	.name	= "bcma_sflash",
+@@ -42,6 +43,13 @@ static const struct bcma_sflash_tbl_e bc
+ 	{ NULL },
+ };
+ 
++/* Some devices use smaller blocks (and have more of them) */
++static const struct bcma_sflash_tbl_e bcma_sflash_st_shrink_tbl[] = {
++	{ "M25P16", 0x14, 0x1000, 512, },
++	{ "M25P32", 0x15, 0x1000, 1024, },
++	{ NULL },
++};
++
+ static const struct bcma_sflash_tbl_e bcma_sflash_sst_tbl[] = {
+ 	{ "SST25WF512", 1, 0x1000, 16, },
+ 	{ "SST25VF512", 0x48, 0x1000, 16, },
+@@ -85,6 +93,24 @@ static void bcma_sflash_cmd(struct bcma_
+ 	bcma_err(cc->core->bus, "SFLASH control command failed (timeout)!\n");
+ }
+ 
++const struct bcma_sflash_tbl_e *bcma_sflash_shrink_flash(u32 id)
++{
++	enum bcm47xx_board board = bcm47xx_board_get();
++	const struct bcma_sflash_tbl_e *e;
++
++	switch (board) {
++	case BCM47XX_BOARD_NETGEAR_WGR614_V10:
++	case BCM47XX_BOARD_NETGEAR_WNR1000_V3:
++		for (e = bcma_sflash_st_shrink_tbl; e->name; e++) {
++			if (e->id == id)
++				return e;
++		}
++		return NULL;
++	default:
++		return NULL;
++	}
++}
++
+ /* Initialize serial flash access */
+ int bcma_sflash_init(struct bcma_drv_cc *cc)
+ {
+@@ -115,6 +141,10 @@ int bcma_sflash_init(struct bcma_drv_cc
+ 		case 0x13:
+ 			return -ENOTSUPP;
+ 		default:
++			e = bcma_sflash_shrink_flash(id);
++			if (e)
++				break;
++
+ 			for (e = bcma_sflash_st_tbl; e->name; e++) {
+ 				if (e->id == id)
+ 					break;
diff --git a/target/linux/bcm47xx/patches-5.15/820-wgt634u-nvram-fix.patch b/target/linux/bcm47xx/patches-5.15/820-wgt634u-nvram-fix.patch
new file mode 100644
index 0000000000..bfcfae885f
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/820-wgt634u-nvram-fix.patch
@@ -0,0 +1,296 @@
+The Netgear wgt634u uses a different format for storing the 
+configuration. This patch is needed to read out the correct 
+configuration. The cfe_env.c file uses a different method way to read 
+out the configuration than the in kernel cfe config reader.
+
+--- a/drivers/firmware/broadcom/Makefile
++++ b/drivers/firmware/broadcom/Makefile
+@@ -1,4 +1,4 @@
+ # SPDX-License-Identifier: GPL-2.0-only
+-obj-$(CONFIG_BCM47XX_NVRAM)		+= bcm47xx_nvram.o
++obj-$(CONFIG_BCM47XX_NVRAM)		+= bcm47xx_nvram.o cfe_env.o
+ obj-$(CONFIG_BCM47XX_SPROM)		+= bcm47xx_sprom.o
+ obj-$(CONFIG_TEE_BNXT_FW)		+= tee_bnxt_fw.o
+--- /dev/null
++++ b/drivers/firmware/broadcom/cfe_env.c
+@@ -0,0 +1,228 @@
++/*
++ * CFE environment variable access
++ *
++ * Copyright 2001-2003, Broadcom Corporation
++ * Copyright 2006, Felix Fietkau <nbd@nbd.name>
++ * 
++ * This program is free software; you can redistribute  it and/or modify it
++ * under  the terms of  the GNU General  Public License as published by the
++ * Free Software Foundation;  either version 2 of the  License, or (at your
++ * option) any later version.
++ */
++
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/string.h>
++#include <asm/io.h>
++#include <linux/uaccess.h>
++
++#define NVRAM_SIZE       (0x1ff0)
++static char _nvdata[NVRAM_SIZE];
++static char _valuestr[256];
++
++/*
++ * TLV types.  These codes are used in the "type-length-value"
++ * encoding of the items stored in the NVRAM device (flash or EEPROM)
++ *
++ * The layout of the flash/nvram is as follows:
++ *
++ * <type> <length> <data ...> <type> <length> <data ...> <type_end>
++ *
++ * The type code of "ENV_TLV_TYPE_END" marks the end of the list.
++ * The "length" field marks the length of the data section, not
++ * including the type and length fields.
++ *
++ * Environment variables are stored as follows:
++ *
++ * <type_env> <length> <flags> <name> = <value>
++ *
++ * If bit 0 (low bit) is set, the length is an 8-bit value.
++ * If bit 0 (low bit) is clear, the length is a 16-bit value
++ * 
++ * Bit 7 set indicates "user" TLVs.  In this case, bit 0 still
++ * indicates the size of the length field.  
++ *
++ * Flags are from the constants below:
++ *
++ */
++#define ENV_LENGTH_16BITS	0x00	/* for low bit */
++#define ENV_LENGTH_8BITS	0x01
++
++#define ENV_TYPE_USER		0x80
++
++#define ENV_CODE_SYS(n,l) (((n)<<1)|(l))
++#define ENV_CODE_USER(n,l) ((((n)<<1)|(l)) | ENV_TYPE_USER)
++
++/*
++ * The actual TLV types we support
++ */
++
++#define ENV_TLV_TYPE_END	0x00	
++#define ENV_TLV_TYPE_ENV	ENV_CODE_SYS(0,ENV_LENGTH_8BITS)
++
++/*
++ * Environment variable flags 
++ */
++
++#define ENV_FLG_NORMAL		0x00	/* normal read/write */
++#define ENV_FLG_BUILTIN		0x01	/* builtin - not stored in flash */
++#define ENV_FLG_READONLY	0x02	/* read-only - cannot be changed */
++
++#define ENV_FLG_MASK		0xFF	/* mask of attributes we keep */
++#define ENV_FLG_ADMIN		0x100	/* lets us internally override permissions */
++
++
++/*  *********************************************************************
++    *  _nvram_read(buffer,offset,length)
++    *  
++    *  Read data from the NVRAM device
++    *  
++    *  Input parameters: 
++    *  	   buffer - destination buffer
++    *  	   offset - offset of data to read
++    *  	   length - number of bytes to read
++    *  	   
++    *  Return value:
++    *  	   number of bytes read, or <0 if error occured
++    ********************************************************************* */
++static int
++_nvram_read(unsigned char *nv_buf, unsigned char *buffer, int offset, int length)
++{
++    int i;
++    if (offset > NVRAM_SIZE)
++	return -1; 
++
++    for ( i = 0; i < length; i++) {
++	buffer[i] = ((volatile unsigned char*)nv_buf)[offset + i];
++    }
++    return length;
++}
++
++
++static char*
++_strnchr(const char *dest,int c,size_t cnt)
++{
++	while (*dest && (cnt > 0)) {
++	if (*dest == c) return (char *) dest;
++	dest++;
++	cnt--;
++	}
++	return NULL;
++}
++
++
++
++/*
++ * Core support API: Externally visible.
++ */
++
++/*
++ * Get the value of an NVRAM variable
++ * @param	name	name of variable to get
++ * @return	value of variable or NULL if undefined
++ */
++
++char *cfe_env_get(unsigned char *nv_buf, const char *name)
++{
++    int size;
++    unsigned char *buffer;
++    unsigned char *ptr;
++    unsigned char *envval;
++    unsigned int reclen;
++    unsigned int rectype;
++    int offset;
++    int flg;
++    
++	if (!strcmp(name, "nvram_type"))
++		return "cfe";
++	
++    size = NVRAM_SIZE;
++    buffer = &_nvdata[0];
++
++    ptr = buffer;
++    offset = 0;
++
++    /* Read the record type and length */
++    if (_nvram_read(nv_buf, ptr,offset,1) != 1) {
++	goto error;
++    }
++    
++    while ((*ptr != ENV_TLV_TYPE_END)  && (size > 1)) {
++
++	/* Adjust pointer for TLV type */
++	rectype = *(ptr);
++	offset++;
++	size--;
++
++	/* 
++	 * Read the length.  It can be either 1 or 2 bytes
++	 * depending on the code 
++	 */
++	if (rectype & ENV_LENGTH_8BITS) {
++	    /* Read the record type and length - 8 bits */
++	    if (_nvram_read(nv_buf, ptr,offset,1) != 1) {
++		goto error;
++	    }
++	    reclen = *(ptr);
++	    size--;
++	    offset++;
++	}
++	else {
++	    /* Read the record type and length - 16 bits, MSB first */
++	    if (_nvram_read(nv_buf, ptr,offset,2) != 2) {
++		goto error;
++	    }
++	    reclen = (((unsigned int) *(ptr)) << 8) + (unsigned int) *(ptr+1);
++	    size -= 2;
++	    offset += 2;
++	}
++
++	if (reclen > size)
++	    break;	/* should not happen, bad NVRAM */
++
++	switch (rectype) {
++	    case ENV_TLV_TYPE_ENV:
++		/* Read the TLV data */
++		if (_nvram_read(nv_buf, ptr,offset,reclen) != reclen)
++		    goto error;
++		flg = *ptr++;
++		envval = (unsigned char *) _strnchr(ptr,'=',(reclen-1));
++		if (envval) {
++		    *envval++ = '\0';
++		    memcpy(_valuestr,envval,(reclen-1)-(envval-ptr));
++		    _valuestr[(reclen-1)-(envval-ptr)] = '\0';
++#if 0			
++		    printk(KERN_INFO "NVRAM:%s=%s\n", ptr, _valuestr);
++#endif
++		    if(!strcmp(ptr, name)){
++			return _valuestr;
++		    }
++		    if((strlen(ptr) > 1) && !strcmp(&ptr[1], name))
++			return _valuestr;
++		}
++		break;
++		
++	    default: 
++		/* Unknown TLV type, skip it. */
++		break;
++	    }
++
++	/*
++	 * Advance to next TLV 
++	 */
++		
++	size -= (int)reclen;
++	offset += reclen;
++
++	/* Read the next record type */
++	ptr = buffer;
++	if (_nvram_read(nv_buf, ptr,offset,1) != 1)
++	    goto error;
++	}
++
++error:
++    return NULL;
++
++}
++
+--- a/drivers/firmware/broadcom/bcm47xx_nvram.c
++++ b/drivers/firmware/broadcom/bcm47xx_nvram.c
+@@ -33,6 +33,8 @@ struct nvram_header {
+ static char nvram_buf[NVRAM_SPACE];
+ static size_t nvram_len;
+ static const u32 nvram_sizes[] = {0x6000, 0x8000, 0xF000, 0x10000};
++static int cfe_env;
++extern char *cfe_env_get(char *nv_buf, const char *name);
+ 
+ /**
+  * bcm47xx_nvram_is_valid - check for a valid NVRAM at specified memory
+@@ -80,6 +82,26 @@ static int bcm47xx_nvram_find_and_copy(v
+ 		return -EEXIST;
+ 	}
+ 
++	cfe_env = 0;
++
++	/* XXX: hack for supporting the CFE environment stuff on WGT634U */
++	if (res_size >= 8 * 1024 * 1024) {
++		u32 *src = (u32 *)(flash_start + 8 * 1024 * 1024 - 0x2000);
++		u32 *dst = (u32 *)nvram_buf;
++
++		if ((*src & 0xff00ff) == 0x000001) {
++			printk("early_nvram_init: WGT634U NVRAM found.\n");
++
++			for (i = 0; i < 0x1ff0; i++) {
++				if (*src == 0xFFFFFFFF)
++					break;
++				*dst++ = *src++;
++			}
++			cfe_env = 1;
++			return 0;
++		}
++	}
++
+ 	/* TODO: when nvram is on nand flash check for bad blocks first. */
+ 
+ 	/* Try every possible flash size and check for NVRAM at its end */
+@@ -172,6 +194,13 @@ int bcm47xx_nvram_getenv(const char *nam
+ 	if (!name)
+ 		return -EINVAL;
+ 
++	if (cfe_env) {
++		value = cfe_env_get(nvram_buf, name);
++		if (!value)
++			return -ENOENT;
++		return snprintf(val, val_len, "%s", value);
++	}
++
+ 	if (!nvram_len) {
+ 		err = nvram_init();
+ 		if (err)
diff --git a/target/linux/bcm47xx/patches-5.15/830-huawei_e970_support.patch b/target/linux/bcm47xx/patches-5.15/830-huawei_e970_support.patch
new file mode 100644
index 0000000000..1746fee592
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/830-huawei_e970_support.patch
@@ -0,0 +1,101 @@
+--- a/arch/mips/bcm47xx/setup.c
++++ b/arch/mips/bcm47xx/setup.c
+@@ -37,6 +37,7 @@
+ #include <linux/ssb/ssb.h>
+ #include <linux/ssb/ssb_embedded.h>
+ #include <linux/bcma/bcma_soc.h>
++#include <linux/old_gpio_wdt.h>
+ #include <asm/bootinfo.h>
+ #include <asm/idle.h>
+ #include <asm/prom.h>
+@@ -254,6 +255,33 @@ static struct fixed_phy_status bcm47xx_f
+ 	.duplex	= DUPLEX_FULL,
+ };
+ 
++static struct gpio_wdt_platform_data gpio_wdt_data;
++
++static struct platform_device gpio_wdt_device = {
++	.name			= "gpio-wdt",
++	.id			= 0,
++	.dev			= {
++		.platform_data	= &gpio_wdt_data,
++	},
++};
++
++static int __init bcm47xx_register_gpio_watchdog(void)
++{
++	enum bcm47xx_board board = bcm47xx_board_get();
++
++	switch (board) {
++	case BCM47XX_BOARD_HUAWEI_E970:
++		pr_info("bcm47xx: detected Huawei E970 or similar, starting early gpio_wdt timer\n");
++		gpio_wdt_data.gpio = 7;
++		gpio_wdt_data.interval = HZ;
++		gpio_wdt_data.first_interval = HZ / 5;
++		return platform_device_register(&gpio_wdt_device);
++	default:
++		/* Nothing to do */
++		return 0;
++	}
++}
++
+ static int __init bcm47xx_register_bus_complete(void)
+ {
+ 	switch (bcm47xx_bus_type) {
+@@ -275,6 +303,7 @@ static int __init bcm47xx_register_bus_c
+ 	bcm47xx_workarounds();
+ 
+ 	fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status);
++	bcm47xx_register_gpio_watchdog();
+ 	return 0;
+ }
+ device_initcall(bcm47xx_register_bus_complete);
+--- a/arch/mips/configs/bcm47xx_defconfig
++++ b/arch/mips/configs/bcm47xx_defconfig
+@@ -63,6 +63,7 @@ CONFIG_HW_RANDOM=y
+ CONFIG_GPIO_SYSFS=y
+ CONFIG_WATCHDOG=y
+ CONFIG_BCM47XX_WDT=y
++CONFIG_GPIO_WDT=y
+ CONFIG_SSB_DRIVER_GIGE=y
+ CONFIG_BCMA_DRIVER_GMAC_CMN=y
+ CONFIG_USB=y
+--- a/drivers/ssb/embedded.c
++++ b/drivers/ssb/embedded.c
+@@ -34,11 +34,36 @@ int ssb_watchdog_timer_set(struct ssb_bu
+ }
+ EXPORT_SYMBOL(ssb_watchdog_timer_set);
+ 
++#ifdef CONFIG_BCM47XX
++#include <bcm47xx_board.h>
++
++static bool ssb_watchdog_supported(void)
++{
++	enum bcm47xx_board board = bcm47xx_board_get();
++
++	/* The Huawei E970 has a hardware watchdog using a GPIO */
++	switch (board) {
++	case BCM47XX_BOARD_HUAWEI_E970:
++		return false;
++	default:
++		return true;
++	}
++}
++#else
++static bool ssb_watchdog_supported(void)
++{
++	return true;
++}
++#endif
++
+ int ssb_watchdog_register(struct ssb_bus *bus)
+ {
+ 	struct bcm47xx_wdt wdt = {};
+ 	struct platform_device *pdev;
+ 
++	if (!ssb_watchdog_supported())
++		return 0;
++
+ 	if (ssb_chipco_available(&bus->chipco)) {
+ 		wdt.driver_data = &bus->chipco;
+ 		wdt.timer_set = ssb_chipco_watchdog_timer_set_wdt;
diff --git a/target/linux/bcm47xx/patches-5.15/831-old_gpio_wdt.patch b/target/linux/bcm47xx/patches-5.15/831-old_gpio_wdt.patch
new file mode 100644
index 0000000000..f6fb7f1855
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/831-old_gpio_wdt.patch
@@ -0,0 +1,360 @@
+This generic GPIO watchdog is used on Huawei E970 (bcm47xx)
+
+Signed-off-by: Mathias Adam <m.adam--openwrt@adamis.de>
+
+--- a/drivers/watchdog/Kconfig
++++ b/drivers/watchdog/Kconfig
+@@ -1698,6 +1698,15 @@ config WDT_MTX1
+ 	  Hardware driver for the MTX-1 boards. This is a watchdog timer that
+ 	  will reboot the machine after a 100 seconds timer expired.
+ 
++config GPIO_WDT
++	tristate "GPIO Hardware Watchdog"
++ 	help
++	  Hardware driver for GPIO-controlled watchdogs. GPIO pin and
++	  toggle interval settings are platform-specific. The driver
++	  will stop toggling the GPIO (i.e. machine reboots) after a
++	  100 second timer expired and no process has written to
++	  /dev/watchdog during that time.
++
+ config PNX833X_WDT
+ 	tristate "PNX833x Hardware Watchdog"
+ 	depends on SOC_PNX8335
+--- a/drivers/watchdog/Makefile
++++ b/drivers/watchdog/Makefile
+@@ -161,6 +161,7 @@ obj-$(CONFIG_RC32434_WDT) += rc32434_wdt
+ obj-$(CONFIG_INDYDOG) += indydog.o
+ obj-$(CONFIG_JZ4740_WDT) += jz4740_wdt.o
+ obj-$(CONFIG_WDT_MTX1) += mtx-1_wdt.o
++obj-$(CONFIG_GPIO_WDT) += old_gpio_wdt.o
+ obj-$(CONFIG_PNX833X_WDT) += pnx833x_wdt.o
+ obj-$(CONFIG_SIBYTE_WDOG) += sb_wdog.o
+ obj-$(CONFIG_AR7_WDT) += ar7_wdt.o
+--- /dev/null
++++ b/drivers/watchdog/old_gpio_wdt.c
+@@ -0,0 +1,301 @@
++/*
++ *      Driver for GPIO-controlled Hardware Watchdogs.
++ *
++ *      Copyright (C) 2013 Mathias Adam <m.adam--linux@adamis.de>
++ *
++ *      Replaces mtx1_wdt (driver for the MTX-1 Watchdog):
++ *
++ *      (C) Copyright 2005 4G Systems <info@4g-systems.biz>,
++ *                              All Rights Reserved.
++ *                              http://www.4g-systems.biz
++ *
++ *      (C) Copyright 2007 OpenWrt.org, Florian Fainelli <florian@openwrt.org>
++ *
++ *      This program is free software; you can redistribute it and/or
++ *      modify it under the terms of the GNU General Public License
++ *      as published by the Free Software Foundation; either version
++ *      2 of the License, or (at your option) any later version.
++ *
++ *      Neither Michael Stickel nor 4G Systems admit liability nor provide
++ *      warranty for any of this software. This material is provided
++ *      "AS-IS" and at no charge.
++ *
++ *      (c) Copyright 2005    4G Systems <info@4g-systems.biz>
++ *
++ *      Release 0.01.
++ *      Author: Michael Stickel  michael.stickel@4g-systems.biz
++ *
++ *      Release 0.02.
++ *      Author: Florian Fainelli florian@openwrt.org
++ *              use the Linux watchdog/timer APIs
++ *
++ *      Release 0.03.
++ *      Author: Mathias Adam <m.adam--linux@adamis.de>
++ *              make it a generic gpio watchdog driver
++ *
++ *      The Watchdog is configured to reset the MTX-1
++ *      if it is not triggered for 100 seconds.
++ *      It should not be triggered more often than 1.6 seconds.
++ *
++ *      A timer triggers the watchdog every 5 seconds, until
++ *      it is opened for the first time. After the first open
++ *      it MUST be triggered every 2..95 seconds.
++ */
++
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++#include <linux/types.h>
++#include <linux/errno.h>
++#include <linux/miscdevice.h>
++#include <linux/fs.h>
++#include <linux/init.h>
++#include <linux/ioport.h>
++#include <linux/timer.h>
++#include <linux/completion.h>
++#include <linux/jiffies.h>
++#include <linux/watchdog.h>
++#include <linux/platform_device.h>
++#include <linux/io.h>
++#include <linux/uaccess.h>
++#include <linux/gpio.h>
++#include <linux/old_gpio_wdt.h>
++
++static int ticks = 100 * HZ;
++
++static struct {
++	struct completion stop;
++	spinlock_t lock;
++	int running;
++	struct timer_list timer;
++	int queue;
++	int default_ticks;
++	unsigned long inuse;
++	unsigned gpio;
++	unsigned int gstate;
++	int interval;
++	int first_interval;
++} gpio_wdt_device;
++
++static void gpio_wdt_trigger(struct timer_list *unused)
++{
++	spin_lock(&gpio_wdt_device.lock);
++	if (gpio_wdt_device.running && ticks > 0)
++		ticks -= gpio_wdt_device.interval;
++
++	/* toggle wdt gpio */
++	gpio_wdt_device.gstate = !gpio_wdt_device.gstate;
++	gpio_set_value(gpio_wdt_device.gpio, gpio_wdt_device.gstate);
++
++	if (gpio_wdt_device.queue && ticks > 0)
++		mod_timer(&gpio_wdt_device.timer, jiffies + gpio_wdt_device.interval);
++	else
++		complete(&gpio_wdt_device.stop);
++	spin_unlock(&gpio_wdt_device.lock);
++}
++
++static void gpio_wdt_reset(void)
++{
++	ticks = gpio_wdt_device.default_ticks;
++}
++
++
++static void gpio_wdt_start(void)
++{
++	unsigned long flags;
++
++	spin_lock_irqsave(&gpio_wdt_device.lock, flags);
++	if (!gpio_wdt_device.queue) {
++		gpio_wdt_device.queue = 1;
++		gpio_wdt_device.gstate = 1;
++		gpio_set_value(gpio_wdt_device.gpio, 1);
++		mod_timer(&gpio_wdt_device.timer, jiffies + gpio_wdt_device.first_interval);
++	}
++	gpio_wdt_device.running++;
++	spin_unlock_irqrestore(&gpio_wdt_device.lock, flags);
++}
++
++static int gpio_wdt_stop(void)
++{
++	unsigned long flags;
++
++	spin_lock_irqsave(&gpio_wdt_device.lock, flags);
++	if (gpio_wdt_device.queue) {
++		gpio_wdt_device.queue = 0;
++		gpio_wdt_device.gstate = 0;
++		gpio_set_value(gpio_wdt_device.gpio, 0);
++	}
++	ticks = gpio_wdt_device.default_ticks;
++	spin_unlock_irqrestore(&gpio_wdt_device.lock, flags);
++	return 0;
++}
++
++/* Filesystem functions */
++
++static int gpio_wdt_open(struct inode *inode, struct file *file)
++{
++	if (test_and_set_bit(0, &gpio_wdt_device.inuse))
++		return -EBUSY;
++	return nonseekable_open(inode, file);
++}
++
++
++static int gpio_wdt_release(struct inode *inode, struct file *file)
++{
++	clear_bit(0, &gpio_wdt_device.inuse);
++	return 0;
++}
++
++static long gpio_wdt_ioctl(struct file *file, unsigned int cmd,
++							unsigned long arg)
++{
++	void __user *argp = (void __user *)arg;
++	int __user *p = (int __user *)argp;
++	unsigned int value;
++	static const struct watchdog_info ident = {
++		.options = WDIOF_CARDRESET,
++		.identity = "GPIO WDT",
++	};
++
++	switch (cmd) {
++	case WDIOC_GETSUPPORT:
++		if (copy_to_user(argp, &ident, sizeof(ident)))
++			return -EFAULT;
++		break;
++	case WDIOC_GETSTATUS:
++	case WDIOC_GETBOOTSTATUS:
++		put_user(0, p);
++		break;
++	case WDIOC_SETOPTIONS:
++		if (get_user(value, p))
++			return -EFAULT;
++		if (value & WDIOS_ENABLECARD)
++			gpio_wdt_start();
++		else if (value & WDIOS_DISABLECARD)
++			gpio_wdt_stop();
++		else
++			return -EINVAL;
++		return 0;
++	case WDIOC_KEEPALIVE:
++		gpio_wdt_reset();
++		break;
++	default:
++		return -ENOTTY;
++	}
++	return 0;
++}
++
++
++static ssize_t gpio_wdt_write(struct file *file, const char *buf,
++						size_t count, loff_t *ppos)
++{
++	if (!count)
++		return -EIO;
++	gpio_wdt_reset();
++	return count;
++}
++
++static const struct file_operations gpio_wdt_fops = {
++	.owner		= THIS_MODULE,
++	.llseek		= no_llseek,
++	.unlocked_ioctl	= gpio_wdt_ioctl,
++	.open		= gpio_wdt_open,
++	.write		= gpio_wdt_write,
++	.release	= gpio_wdt_release,
++};
++
++
++static struct miscdevice gpio_wdt_misc = {
++	.minor	= WATCHDOG_MINOR,
++	.name	= "watchdog",
++	.fops	= &gpio_wdt_fops,
++};
++
++
++static int gpio_wdt_probe(struct platform_device *pdev)
++{
++	int ret;
++	struct gpio_wdt_platform_data *gpio_wdt_data = pdev->dev.platform_data;
++
++	gpio_wdt_device.gpio = gpio_wdt_data->gpio;
++	gpio_wdt_device.interval = gpio_wdt_data->interval;
++	gpio_wdt_device.first_interval = gpio_wdt_data->first_interval;
++	if (gpio_wdt_device.first_interval <= 0) {
++		gpio_wdt_device.first_interval = gpio_wdt_device.interval;
++	}
++
++	ret = gpio_request(gpio_wdt_device.gpio, "gpio-wdt");
++	if (ret < 0) {
++		dev_err(&pdev->dev, "failed to request gpio");
++		return ret;
++	}
++
++	spin_lock_init(&gpio_wdt_device.lock);
++	init_completion(&gpio_wdt_device.stop);
++	gpio_wdt_device.queue = 0;
++	clear_bit(0, &gpio_wdt_device.inuse);
++	timer_setup(&gpio_wdt_device.timer, gpio_wdt_trigger, 0L);
++	gpio_wdt_device.default_ticks = ticks;
++
++	gpio_wdt_start();
++	dev_info(&pdev->dev, "GPIO Hardware Watchdog driver (gpio=%i interval=%i/%i)\n",
++		gpio_wdt_data->gpio, gpio_wdt_data->first_interval, gpio_wdt_data->interval);
++	return 0;
++}
++
++static int gpio_wdt_remove(struct platform_device *pdev)
++{
++	/* FIXME: do we need to lock this test ? */
++	if (gpio_wdt_device.queue) {
++		gpio_wdt_device.queue = 0;
++		wait_for_completion(&gpio_wdt_device.stop);
++	}
++
++	gpio_free(gpio_wdt_device.gpio);
++	misc_deregister(&gpio_wdt_misc);
++	return 0;
++}
++
++static struct platform_driver gpio_wdt_driver = {
++	.probe = gpio_wdt_probe,
++	.remove = gpio_wdt_remove,
++	.driver.name = "gpio-wdt",
++	.driver.owner = THIS_MODULE,
++};
++
++static int __init gpio_wdt_init(void)
++{
++	return platform_driver_register(&gpio_wdt_driver);
++}
++arch_initcall(gpio_wdt_init);
++
++/*
++ * We do wdt initialization in two steps: arch_initcall probes the wdt
++ * very early to start pinging the watchdog (misc devices are not yet
++ * available), and later module_init() just registers the misc device.
++ */
++static int gpio_wdt_init_late(void)
++{
++	int ret;
++
++	ret = misc_register(&gpio_wdt_misc);
++	if (ret < 0) {
++		pr_err("GPIO_WDT: failed to register misc device\n");
++		return ret;
++	}
++	return 0;
++}
++#ifndef MODULE
++module_init(gpio_wdt_init_late);
++#endif
++
++static void __exit gpio_wdt_exit(void)
++{
++	platform_driver_unregister(&gpio_wdt_driver);
++}
++module_exit(gpio_wdt_exit);
++
++MODULE_AUTHOR("Michael Stickel, Florian Fainelli, Mathias Adam");
++MODULE_DESCRIPTION("Driver for GPIO hardware watchdogs");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
++MODULE_ALIAS("platform:gpio-wdt");
+--- /dev/null
++++ b/include/linux/old_gpio_wdt.h
+@@ -0,0 +1,21 @@
++/*
++ *  Definitions for the GPIO watchdog driver
++ *
++ *  Copyright (C) 2013 Mathias Adam <m.adam--linux@adamis.de>
++ *
++ *  This program is free software; you can redistribute it and/or modify
++ *  it under the terms of the GNU General Public License version 2 as
++ *  published by the Free Software Foundation.
++ *
++ */
++
++#ifndef _GPIO_WDT_H_
++#define _GPIO_WDT_H_
++
++struct gpio_wdt_platform_data {
++	int	gpio;		/* GPIO line number */
++	int	interval;	/* watchdog reset interval in system ticks */
++	int	first_interval;	/* first wd reset interval in system ticks */
++};
++
++#endif /* _GPIO_WDT_H_ */
diff --git a/target/linux/bcm47xx/patches-5.15/900-ssb-reject-PCI-writes-setting-CardBus-bridge-resourc.patch b/target/linux/bcm47xx/patches-5.15/900-ssb-reject-PCI-writes-setting-CardBus-bridge-resourc.patch
new file mode 100644
index 0000000000..6b7ee06e50
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/900-ssb-reject-PCI-writes-setting-CardBus-bridge-resourc.patch
@@ -0,0 +1,30 @@
+From 5c81397a0147ea59c778d1de14ef54e2268221f6 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Wed, 8 Apr 2015 06:58:11 +0200
+Subject: [PATCH] ssb: reject PCI writes setting CardBus bridge resources
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+If SoC has a CardBus we can set resources of device at slot 1 only. It's
+impossigle to set bridge resources as it simply overwrites device 1
+configuration and usually results in Data bus error-s.
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+---
+ drivers/ssb/driver_pcicore.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/ssb/driver_pcicore.c
++++ b/drivers/ssb/driver_pcicore.c
+@@ -164,6 +164,10 @@ static int ssb_extpci_write_config(struc
+ 	WARN_ON(!pc->hostmode);
+ 	if (unlikely(len != 1 && len != 2 && len != 4))
+ 		goto out;
++	/* CardBus SoCs allow configuring dev 1 resources only */
++	if (extpci_core->cardbusmode && dev != 1 &&
++	    off >= PCI_BASE_ADDRESS_0 && off <= PCI_BASE_ADDRESS_5)
++		goto out;
+ 	addr = get_cfgspace_addr(pc, bus, dev, func, off);
+ 	if (unlikely(!addr))
+ 		goto out;
diff --git a/target/linux/bcm47xx/patches-5.15/940-bcm47xx-yenta.patch b/target/linux/bcm47xx/patches-5.15/940-bcm47xx-yenta.patch
new file mode 100644
index 0000000000..8847b0c0c7
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/940-bcm47xx-yenta.patch
@@ -0,0 +1,46 @@
+--- a/drivers/pcmcia/yenta_socket.c
++++ b/drivers/pcmcia/yenta_socket.c
+@@ -932,6 +932,8 @@ static unsigned int yenta_probe_irq(stru
+ 	 * Probe for usable interrupts using the force
+ 	 * register to generate bogus card status events.
+ 	 */
++#ifndef CONFIG_BCM47XX
++	/* WRT54G3G does not like this */
+ 	cb_writel(socket, CB_SOCKET_EVENT, -1);
+ 	cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
+ 	reg = exca_readb(socket, I365_CSCINT);
+@@ -947,6 +949,7 @@ static unsigned int yenta_probe_irq(stru
+ 	}
+ 	cb_writel(socket, CB_SOCKET_MASK, 0);
+ 	exca_writeb(socket, I365_CSCINT, reg);
++#endif
+ 
+ 	mask = probe_irq_mask(val) & 0xffff;
+ 
+@@ -1031,6 +1034,10 @@ static void yenta_get_socket_capabilitie
+ 	else
+ 		socket->socket.irq_mask = 0;
+ 
++	/* irq mask probing is broken for the WRT54G3G */
++	if (socket->socket.irq_mask == 0)
++		socket->socket.irq_mask = 0x6f8;
++
+ 	dev_info(&socket->dev->dev, "ISA IRQ mask 0x%04x, PCI irq %d\n",
+ 		 socket->socket.irq_mask, socket->cb_irq);
+ }
+@@ -1262,6 +1269,15 @@ static int yenta_probe(struct pci_dev *d
+ 	dev_info(&dev->dev, "Socket status: %08x\n",
+ 		 cb_readl(socket, CB_SOCKET_STATE));
+ 
++	/* Generate an interrupt on card insert/remove */
++	config_writew(socket, CB_SOCKET_MASK, CB_CSTSMASK | CB_CDMASK);
++
++	/* Set up Multifunction Routing Status Register */
++	config_writew(socket, 0x8C, 0x1000 /* MFUNC3 to GPIO3 */ | 0x2 /* MFUNC0 to INTA */);
++
++	/* Switch interrupts to parallelized */
++	config_writeb(socket, 0x92, 0x64);
++
+ 	yenta_fixup_parent_bridge(dev->subordinate);
+ 
+ 	/* Register it with the pcmcia layer.. */
diff --git a/target/linux/bcm47xx/patches-5.15/976-ssb_increase_pci_delay.patch b/target/linux/bcm47xx/patches-5.15/976-ssb_increase_pci_delay.patch
new file mode 100644
index 0000000000..99aa188374
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/976-ssb_increase_pci_delay.patch
@@ -0,0 +1,11 @@
+--- a/drivers/ssb/driver_pcicore.c
++++ b/drivers/ssb/driver_pcicore.c
+@@ -390,7 +390,7 @@ static void ssb_pcicore_init_hostmode(st
+ 	set_io_port_base(ssb_pcicore_controller.io_map_base);
+ 	/* Give some time to the PCI controller to configure itself with the new
+ 	 * values. Not waiting at this point causes crashes of the machine. */
+-	mdelay(10);
++	mdelay(300);
+ 	register_pci_controller(&ssb_pcicore_controller);
+ }
+ 
diff --git a/target/linux/bcm47xx/patches-5.15/999-wl_exports.patch b/target/linux/bcm47xx/patches-5.15/999-wl_exports.patch
new file mode 100644
index 0000000000..48c6a47871
--- /dev/null
+++ b/target/linux/bcm47xx/patches-5.15/999-wl_exports.patch
@@ -0,0 +1,24 @@
+--- a/drivers/firmware/broadcom/bcm47xx_nvram.c
++++ b/drivers/firmware/broadcom/bcm47xx_nvram.c
+@@ -30,7 +30,8 @@ struct nvram_header {
+ 	u32 config_ncdl;	/* ncdl values for memc */
+ };
+ 
+-static char nvram_buf[NVRAM_SPACE];
++char nvram_buf[NVRAM_SPACE];
++EXPORT_SYMBOL(nvram_buf);
+ static size_t nvram_len;
+ static const u32 nvram_sizes[] = {0x6000, 0x8000, 0xF000, 0x10000};
+ static int cfe_env;
+--- a/arch/mips/mm/cache.c
++++ b/arch/mips/mm/cache.c
+@@ -61,6 +61,9 @@ void (*_dma_cache_wback_inv)(unsigned lo
+ void (*_dma_cache_wback)(unsigned long start, unsigned long size);
+ void (*_dma_cache_inv)(unsigned long start, unsigned long size);
+ 
++EXPORT_SYMBOL(_dma_cache_wback_inv);
++EXPORT_SYMBOL(_dma_cache_inv);
++
+ #endif /* CONFIG_DMA_NONCOHERENT */
+ 
+ /*