pistachio: 5:15: copy config and patch from 5.10

Copy config and patch from kernel 5.10 to kernel 5.15.

Signed-off-by: Nick Hainke <vincent@systemli.org>
[Updated the copy]
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

14 files changed, 1180 insertions, 0 deletions

diff --git a/target/linux/pistachio/config-5.15 b/target/linux/pistachio/config-5.15
new file mode 100644
index 0000000000..681607f65c
--- /dev/null
+++ b/target/linux/pistachio/config-5.15
@@ -0,0 +1,313 @@
+CONFIG_ARCH_32BIT_OFF_T=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_MMAP_RND_BITS_MAX=15
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=15
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_BLK_SCSI_REQUEST=y
+CONFIG_BOARD_SCACHE=y
+CONFIG_BOOT_ELF32=y
+CONFIG_CEVT_R4K=y
+CONFIG_CLKDEV_LOOKUP=y
+CONFIG_CLKSRC_MIPS_GIC=y
+CONFIG_CLKSRC_PISTACHIO=y
+CONFIG_CLOCKSOURCE_WATCHDOG=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_COMMON_CLK=y
+# CONFIG_COMMON_CLK_BOSTON is not set
+CONFIG_COMPAT_32BIT_TIME=y
+CONFIG_CONNECTOR=y
+CONFIG_CPU_GENERIC_DUMP_TLB=y
+CONFIG_CPU_HAS_DIEI=y
+CONFIG_CPU_HAS_PREFETCH=y
+CONFIG_CPU_HAS_RIXI=y
+CONFIG_CPU_HAS_SYNC=y
+CONFIG_CPU_IDLE=y
+CONFIG_CPU_IDLE_GOV_LADDER=y
+CONFIG_CPU_IDLE_GOV_MENU=y
+CONFIG_CPU_LITTLE_ENDIAN=y
+CONFIG_CPU_MIPS32=y
+CONFIG_CPU_MIPS32_R2=y
+CONFIG_CPU_MIPSR2=y
+CONFIG_CPU_MIPSR2_IRQ_EI=y
+CONFIG_CPU_MIPSR2_IRQ_VI=y
+CONFIG_CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS=y
+CONFIG_CPU_PM=y
+CONFIG_CPU_R4K_CACHE_TLB=y
+CONFIG_CPU_RMAP=y
+CONFIG_CPU_SUPPORTS_32BIT_KERNEL=y
+CONFIG_CPU_SUPPORTS_HIGHMEM=y
+CONFIG_CPU_SUPPORTS_MSA=y
+CONFIG_CRC16=y
+CONFIG_CRC_CCITT=y
+CONFIG_CRYPTO_BLAKE2S=y
+CONFIG_CRYPTO_CBC=y
+CONFIG_CRYPTO_CRC32C=y
+CONFIG_CRYPTO_DEFLATE=y
+CONFIG_CRYPTO_HASH_INFO=y
+CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
+CONFIG_CRYPTO_LIB_POLY1305_RSIZE=2
+CONFIG_CRYPTO_LIB_SHA256=y
+CONFIG_CRYPTO_LZO=y
+CONFIG_CRYPTO_MD5=y
+CONFIG_CRYPTO_RNG=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_SHA1=y
+CONFIG_CRYPTO_SHA256=y
+CONFIG_CRYPTO_ZSTD=y
+CONFIG_CSRC_R4K=y
+CONFIG_DMADEVICES=y
+CONFIG_DMA_ENGINE=y
+CONFIG_DMA_NONCOHERENT=y
+CONFIG_DMA_OF=y
+CONFIG_DMA_VIRTUAL_CHANNELS=y
+CONFIG_DTC=y
+CONFIG_DWMAC_GENERIC=y
+CONFIG_EARLY_PRINTK=y
+CONFIG_EARLY_PRINTK_8250=y
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_FIXED_PHY=y
+CONFIG_FS_IOMAP=y
+CONFIG_FS_MBCACHE=y
+CONFIG_FS_POSIX_ACL=y
+CONFIG_FW_LOADER_PAGED_BUF=y
+CONFIG_GENERIC_ALLOCATOR=y
+CONFIG_GENERIC_ATOMIC64=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CMOS_UPDATE=y
+CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_GETTIMEOFDAY=y
+CONFIG_GENERIC_IOMAP=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_PHY=y
+CONFIG_GENERIC_PINCONF=y
+CONFIG_GENERIC_PINCTRL_GROUPS=y
+CONFIG_GENERIC_PINMUX_FUNCTIONS=y
+CONFIG_GENERIC_SCHED_CLOCK=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GPIOLIB_IRQCHIP=y
+CONFIG_HANDLE_DOMAIN_IRQ=y
+CONFIG_HARDWARE_WATCHPOINTS=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT_MAP=y
+CONFIG_HOTPLUG_CPU=y
+CONFIG_I2C=y
+CONFIG_I2C_BOARDINFO=y
+CONFIG_I2C_IMG=y
+CONFIG_IMGPDC_WDT=y
+CONFIG_IMG_MDC_DMA=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_IRQCHIP=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_DOMAIN_HIERARCHY=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_MIPS_CPU=y
+CONFIG_IRQ_WORK=y
+CONFIG_JBD2=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_PWM=y
+CONFIG_LIBFDT=y
+CONFIG_LKDTM=y
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+CONFIG_LOG_BUF_SHIFT=18
+CONFIG_LZO_COMPRESS=y
+CONFIG_LZO_DECOMPRESS=y
+CONFIG_MACH_PISTACHIO=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0
+CONFIG_MDIO_BUS=y
+CONFIG_MDIO_DEVICE=y
+CONFIG_MDIO_DEVRES=y
+CONFIG_MEMFD_CREATE=y
+CONFIG_MFD_SYSCON=y
+CONFIG_MICREL_PHY=y
+CONFIG_MIGRATION=y
+CONFIG_MIPS=y
+CONFIG_MIPS_ASID_BITS=8
+CONFIG_MIPS_ASID_SHIFT=0
+CONFIG_MIPS_CLOCK_VSYSCALL=y
+CONFIG_MIPS_CM=y
+CONFIG_MIPS_CMDLINE_DTB_EXTEND=y
+# CONFIG_MIPS_CMDLINE_FROM_BOOTLOADER is not set
+# CONFIG_MIPS_CMDLINE_FROM_DTB is not set
+CONFIG_MIPS_CPC=y
+CONFIG_MIPS_CPS=y
+# CONFIG_MIPS_CPS_CPUIDLE is not set
+# CONFIG_MIPS_CPS_NS16550_BOOL is not set
+CONFIG_MIPS_CPS_PM=y
+CONFIG_MIPS_CPU_SCACHE=y
+CONFIG_MIPS_EBPF_JIT=y
+# CONFIG_MIPS_ELF_APPENDED_DTB is not set
+CONFIG_MIPS_EXTERNAL_TIMER=y
+CONFIG_MIPS_GIC=y
+CONFIG_MIPS_L1_CACHE_SHIFT=5
+CONFIG_MIPS_LD_CAN_LINK_VDSO=y
+CONFIG_MIPS_MT=y
+CONFIG_MIPS_MT_FPAFF=y
+CONFIG_MIPS_MT_SMP=y
+CONFIG_MIPS_NO_APPENDED_DTB=y
+CONFIG_MIPS_NR_CPU_NR_MAP=4
+CONFIG_MIPS_PERF_SHARED_TC_COUNTERS=y
+# CONFIG_MIPS_RAW_APPENDED_DTB is not set
+CONFIG_MIPS_SPRAM=y
+CONFIG_MMC=y
+CONFIG_MMC_BLOCK=y
+CONFIG_MMC_DW=y
+# CONFIG_MMC_DW_BLUEFIELD is not set
+# CONFIG_MMC_DW_EXYNOS is not set
+# CONFIG_MMC_DW_HI3798CV200 is not set
+# CONFIG_MMC_DW_K3 is not set
+CONFIG_MMC_DW_PLTFM=y
+CONFIG_MODULES_USE_ELF_REL=y
+CONFIG_MODULE_FORCE_UNLOAD=y
+CONFIG_MTD_CMDLINE_PARTS=y
+CONFIG_MTD_NAND_CORE=y
+CONFIG_MTD_SPI_NAND=y
+CONFIG_MTD_SPI_NOR=y
+CONFIG_MTD_SPI_NOR_USE_4K_SECTORS=y
+CONFIG_MTD_UBI=y
+CONFIG_MTD_UBI_BEB_LIMIT=20
+CONFIG_MTD_UBI_BLOCK=y
+CONFIG_MTD_UBI_FASTMAP=y
+CONFIG_MTD_UBI_WL_THRESHOLD=4096
+CONFIG_NAMESPACES=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NET_FLOW_LIMIT=y
+CONFIG_NET_NS=y
+CONFIG_NET_PTP_CLASSIFY=y
+CONFIG_NLS=y
+CONFIG_NO_GENERIC_PCI_IOPORT_MAP=y
+CONFIG_NO_HZ=y
+CONFIG_NO_HZ_COMMON=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_NR_CPUS=4
+CONFIG_OF=y
+CONFIG_OF_ADDRESS=y
+CONFIG_OF_EARLY_FLATTREE=y
+CONFIG_OF_FLATTREE=y
+CONFIG_OF_GPIO=y
+CONFIG_OF_IRQ=y
+CONFIG_OF_KOBJ=y
+CONFIG_OF_MDIO=y
+CONFIG_OF_NET=y
+CONFIG_PADATA=y
+CONFIG_PAGE_POOL=y
+CONFIG_PCI_DRIVERS_LEGACY=y
+CONFIG_PCS_XPCS=y
+CONFIG_PERF_USE_VMALLOC=y
+CONFIG_PGTABLE_LEVELS=2
+CONFIG_PHYLIB=y
+CONFIG_PHYLINK=y
+CONFIG_PHY_PISTACHIO_USB=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_PISTACHIO=y
+CONFIG_PISTACHIO_GPTIMER_CLKSRC=y
+CONFIG_POWER_SUPPLY=y
+CONFIG_PPS=y
+# CONFIG_PREEMPT_NONE is not set
+CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PRINTK_TIME=y
+CONFIG_PROC_EVENTS=y
+CONFIG_PROFILING=y
+CONFIG_PTP_1588_CLOCK=y
+CONFIG_PWM=y
+CONFIG_PWM_IMG=y
+CONFIG_PWM_SYSFS=y
+CONFIG_QUEUED_RWLOCKS=y
+CONFIG_QUEUED_SPINLOCKS=y
+CONFIG_RATIONAL=y
+CONFIG_REGMAP=y
+CONFIG_REGMAP_MMIO=y
+CONFIG_REGMAP_SPI=y
+CONFIG_REGULATOR=y
+CONFIG_REGULATOR_FIXED_VOLTAGE=y
+CONFIG_REGULATOR_GPIO=y
+CONFIG_RESET_CONTROLLER=y
+CONFIG_RESET_PISTACHIO=y
+CONFIG_RFS_ACCEL=y
+CONFIG_RPS=y
+CONFIG_SCHEDSTATS=y
+CONFIG_SCHED_INFO=y
+CONFIG_SCSI=y
+CONFIG_SCSI_SPI_ATTRS=y
+CONFIG_SERIAL_8250_DW=y
+CONFIG_SERIAL_8250_DWLIB=y
+CONFIG_SERIAL_MCTRL_GPIO=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SERIAL_SC16IS7XX=y
+CONFIG_SERIAL_SC16IS7XX_CORE=y
+# CONFIG_SERIAL_SC16IS7XX_I2C is not set
+CONFIG_SERIAL_SC16IS7XX_SPI=y
+CONFIG_SGL_ALLOC=y
+CONFIG_SG_POOL=y
+CONFIG_SMP=y
+CONFIG_SMP_UP=y
+CONFIG_SPI=y
+CONFIG_SPI_IMG_SPFI=y
+CONFIG_SPI_MASTER=y
+CONFIG_SPI_MEM=y
+CONFIG_SRAM=y
+CONFIG_SRCU=y
+CONFIG_STMMAC_ETH=y
+CONFIG_STMMAC_PLATFORM=y
+# CONFIG_STMMAC_SELFTESTS is not set
+CONFIG_SWPHY=y
+CONFIG_SYNC_R4K=y
+CONFIG_SYSCTL_EXCEPTION_TRACE=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_HOTPLUG_CPU=y
+CONFIG_SYS_SUPPORTS_LITTLE_ENDIAN=y
+CONFIG_SYS_SUPPORTS_MIPS_CPS=y
+CONFIG_SYS_SUPPORTS_MULTITHREADING=y
+CONFIG_SYS_SUPPORTS_RELOCATABLE=y
+CONFIG_SYS_SUPPORTS_SCHED_SMT=y
+CONFIG_SYS_SUPPORTS_SMP=y
+CONFIG_SYS_SUPPORTS_ZBOOT=y
+CONFIG_TARGET_ISA_REV=2
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TIMER_OF=y
+CONFIG_TIMER_PROBE=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_TREE_RCU=y
+CONFIG_TREE_SRCU=y
+CONFIG_UBIFS_FS=y
+CONFIG_USB=y
+CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
+CONFIG_USB_COMMON=y
+CONFIG_USB_DWC2=y
+CONFIG_USB_DWC2_DUAL_ROLE=y
+CONFIG_USB_EHCI_HCD=y
+# CONFIG_USB_EHCI_HCD_PLATFORM is not set
+CONFIG_USB_GADGET=y
+CONFIG_USB_ROLE_SWITCH=y
+CONFIG_USB_STORAGE=y
+CONFIG_USB_SUPPORT=y
+CONFIG_USER_NS=y
+CONFIG_USE_GENERIC_EARLY_PRINTK_8250=y
+CONFIG_USE_OF=y
+CONFIG_WATCHDOG_CORE=y
+CONFIG_WEAK_ORDERING=y
+CONFIG_XPS=y
+CONFIG_XXHASH=y
+CONFIG_ZLIB_DEFLATE=y
+CONFIG_ZLIB_INFLATE=y
+CONFIG_ZSMALLOC=y
+# CONFIG_ZSMALLOC_STAT is not set
+CONFIG_ZSTD_COMPRESS=y
+CONFIG_ZSTD_DECOMPRESS=y
diff --git a/target/linux/pistachio/patches-5.15/101-dmaengine-img-mdc-Handle-early-status-read.patch b/target/linux/pistachio/patches-5.15/101-dmaengine-img-mdc-Handle-early-status-read.patch
new file mode 100644
index 0000000000..031a4e3e5e
--- /dev/null
+++ b/target/linux/pistachio/patches-5.15/101-dmaengine-img-mdc-Handle-early-status-read.patch
@@ -0,0 +1,68 @@
+From a2dd154377c9aa6ddda00d39b8c7c334e4fa16ff Mon Sep 17 00:00:00 2001
+From: Damien Horsley <damien.horsley@imgtec.com>
+Date: Tue, 22 Mar 2016 12:46:09 +0000
+Subject: dmaengine: img-mdc: Handle early status read
+
+It is possible that mdc_tx_status may be called before the first
+node has been read from memory.
+
+In this case, the residue value stored in the register is undefined.
+Return the transfer size instead.
+
+Signed-off-by: Damien Horsley <damien.horsley@imgtec.com>
+---
+ drivers/dma/img-mdc-dma.c | 40 ++++++++++++++++++++++++----------------
+ 1 file changed, 24 insertions(+), 16 deletions(-)
+
+--- a/drivers/dma/img-mdc-dma.c
++++ b/drivers/dma/img-mdc-dma.c
+@@ -618,25 +618,33 @@ static enum dma_status mdc_tx_status(str
+ 			(MDC_CMDS_PROCESSED_CMDS_DONE_MASK + 1);
+ 
+ 		/*
+-		 * If the command loaded event hasn't been processed yet, then
+-		 * the difference above includes an extra command.
++		 * If the first node has not yet been read from memory,
++		 * the residue register value is undefined
+ 		 */
+-		if (!mdesc->cmd_loaded)
+-			cmds--;
+-		else
+-			cmds += mdesc->list_cmds_done;
+-
+-		bytes = mdesc->list_xfer_size;
+-		ldesc = mdesc->list;
+-		for (i = 0; i < cmds; i++) {
+-			bytes -= ldesc->xfer_size + 1;
+-			ldesc = ldesc->next_desc;
+-		}
+-		if (ldesc) {
+-			if (residue != MDC_TRANSFER_SIZE_MASK)
+-				bytes -= ldesc->xfer_size - residue;
++		if (!mdesc->cmd_loaded && !cmds) {
++			bytes = mdesc->list_xfer_size;
++		} else {
++			/*
++			 * If the command loaded event hasn't been processed yet, then
++			 * the difference above includes an extra command.
++			 */
++			if (!mdesc->cmd_loaded)
++				cmds--;
+ 			else
++				cmds += mdesc->list_cmds_done;
++
++			bytes = mdesc->list_xfer_size;
++			ldesc = mdesc->list;
++			for (i = 0; i < cmds; i++) {
+ 				bytes -= ldesc->xfer_size + 1;
++				ldesc = ldesc->next_desc;
++			}
++			if (ldesc) {
++				if (residue != MDC_TRANSFER_SIZE_MASK)
++					bytes -= ldesc->xfer_size - residue;
++				else
++					bytes -= ldesc->xfer_size + 1;
++			}
+ 		}
+ 	}
+ 	spin_unlock_irqrestore(&mchan->vc.lock, flags);
diff --git a/target/linux/pistachio/patches-5.15/102-spi-img-spfi-Implement-dual-and-quad-mode.patch b/target/linux/pistachio/patches-5.15/102-spi-img-spfi-Implement-dual-and-quad-mode.patch
new file mode 100644
index 0000000000..83f21a5c0a
--- /dev/null
+++ b/target/linux/pistachio/patches-5.15/102-spi-img-spfi-Implement-dual-and-quad-mode.patch
@@ -0,0 +1,198 @@
+From cd2a6af51553d38072cd31699b58d16ca6176ef5 Mon Sep 17 00:00:00 2001
+From: Ionela Voinescu <ionela.voinescu@imgtec.com>
+Date: Thu, 2 Feb 2017 16:46:14 +0000
+Subject: spi: img-spfi: Implement dual and quad mode
+
+For dual and quad modes to work the SPFI controller needs
+to have information about command/address/dummy bytes in the
+transaction register. This information is not relevant for
+single mode, and therefore it can have any value in the
+allowed range. Therefore, for any read or write transfers of less
+than 8 bytes (cmd = 1 byte, addr up to 7 bytes), SPFI will be
+configured, but not enabled (unless it is the last transfer in
+the queue). The transfer will be enabled by the subsequent tranfer.
+A pending transfer is determined by the content of the transaction
+register: if command part is set and tsize is not.
+
+This way we ensure that for dual and quad transactions
+the command request size will apear in the command/address part
+of the transaction register, while the data size will be in
+tsize, all data being sent/received in the same transaction (as
+set up in the transaction register).
+
+Signed-off-by: Ionela Voinescu <ionela.voinescu@imgtec.com>
+Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
+---
+ drivers/spi/spi-img-spfi.c | 96 ++++++++++++++++++++++++++++++++++++++++------
+ 1 file changed, 85 insertions(+), 11 deletions(-)
+
+--- a/drivers/spi/spi-img-spfi.c
++++ b/drivers/spi/spi-img-spfi.c
+@@ -36,7 +36,8 @@
+ #define SPFI_CONTROL_SOFT_RESET			BIT(11)
+ #define SPFI_CONTROL_SEND_DMA			BIT(10)
+ #define SPFI_CONTROL_GET_DMA			BIT(9)
+-#define SPFI_CONTROL_SE			BIT(8)
++#define SPFI_CONTROL_SE				BIT(8)
++#define SPFI_CONTROL_TX_RX			BIT(1)
+ #define SPFI_CONTROL_TMODE_SHIFT		5
+ #define SPFI_CONTROL_TMODE_MASK			0x7
+ #define SPFI_CONTROL_TMODE_SINGLE		0
+@@ -47,6 +48,10 @@
+ #define SPFI_TRANSACTION			0x18
+ #define SPFI_TRANSACTION_TSIZE_SHIFT		16
+ #define SPFI_TRANSACTION_TSIZE_MASK		0xffff
++#define SPFI_TRANSACTION_CMD_SHIFT		13
++#define SPFI_TRANSACTION_CMD_MASK		0x7
++#define SPFI_TRANSACTION_ADDR_SHIFT		10
++#define SPFI_TRANSACTION_ADDR_MASK		0x7
+ 
+ #define SPFI_PORT_STATE				0x1c
+ #define SPFI_PORT_STATE_DEV_SEL_SHIFT		20
+@@ -83,6 +88,7 @@
+  */
+ #define SPFI_32BIT_FIFO_SIZE			64
+ #define SPFI_8BIT_FIFO_SIZE			16
++#define SPFI_DATA_REQUEST_MAX_SIZE		8
+ 
+ struct img_spfi {
+ 	struct device *dev;
+@@ -99,6 +105,8 @@ struct img_spfi {
+ 	struct dma_chan *tx_ch;
+ 	bool tx_dma_busy;
+ 	bool rx_dma_busy;
++
++	bool complete;
+ };
+ 
+ static inline u32 spfi_readl(struct img_spfi *spfi, u32 reg)
+@@ -115,9 +123,11 @@ static inline void spfi_start(struct img
+ {
+ 	u32 val;
+ 
+-	val = spfi_readl(spfi, SPFI_CONTROL);
+-	val |= SPFI_CONTROL_SPFI_EN;
+-	spfi_writel(spfi, val, SPFI_CONTROL);
++	if (spfi->complete) {
++		val = spfi_readl(spfi, SPFI_CONTROL);
++		val |= SPFI_CONTROL_SPFI_EN;
++		spfi_writel(spfi, val, SPFI_CONTROL);
++	}
+ }
+ 
+ static inline void spfi_reset(struct img_spfi *spfi)
+@@ -130,12 +140,21 @@ static int spfi_wait_all_done(struct img
+ {
+ 	unsigned long timeout = jiffies + msecs_to_jiffies(50);
+ 
++	if (!(spfi->complete))
++		return 0;
++
+ 	while (time_before(jiffies, timeout)) {
+ 		u32 status = spfi_readl(spfi, SPFI_INTERRUPT_STATUS);
+ 
+ 		if (status & SPFI_INTERRUPT_ALLDONETRIG) {
+ 			spfi_writel(spfi, SPFI_INTERRUPT_ALLDONETRIG,
+ 				    SPFI_INTERRUPT_CLEAR);
++			/*
++			 * Disable SPFI for it not to interfere with
++			 * pending transactions
++			 */
++			spfi_writel(spfi, spfi_readl(spfi, SPFI_CONTROL)
++			& ~SPFI_CONTROL_SPFI_EN, SPFI_CONTROL);
+ 			return 0;
+ 		}
+ 		cpu_relax();
+@@ -441,9 +460,32 @@ static void img_spfi_config(struct spi_m
+ 			    struct spi_transfer *xfer)
+ {
+ 	struct img_spfi *spfi = spi_master_get_devdata(spi->master);
+-	u32 val, div;
++	u32 val, div, transact;
++	bool is_pending;
+ 
+ 	/*
++	 * For read or write transfers of less than 8 bytes (cmd = 1 byte,
++	 * addr up to 7 bytes), SPFI will be configured, but not enabled
++	 * (unless it is the last transfer in the queue).The transfer will
++	 * be enabled by the subsequent transfer.
++	 * A pending transfer is determined by the content of the
++	 * transaction register: if command part is set and tsize
++	 * is not
++	 */
++	transact = spfi_readl(spfi, SPFI_TRANSACTION);
++	is_pending = ((transact >> SPFI_TRANSACTION_CMD_SHIFT) &
++			SPFI_TRANSACTION_CMD_MASK) &&
++			(!((transact >> SPFI_TRANSACTION_TSIZE_SHIFT) &
++			SPFI_TRANSACTION_TSIZE_MASK));
++
++	/* If there are no pending transactions it's OK to soft reset */
++	if (!is_pending) {
++		/* Start the transaction from a known (reset) state */
++		spfi_reset(spfi);
++	}
++
++	/*
++	 * Before anything else, set up parameters.
+ 	 * output = spfi_clk * (BITCLK / 512), where BITCLK must be a
+ 	 * power of 2 up to 128
+ 	 */
+@@ -456,20 +498,52 @@ static void img_spfi_config(struct spi_m
+ 	val |= div << SPFI_DEVICE_PARAMETER_BITCLK_SHIFT;
+ 	spfi_writel(spfi, val, SPFI_DEVICE_PARAMETER(spi->chip_select));
+ 
+-	spfi_writel(spfi, xfer->len << SPFI_TRANSACTION_TSIZE_SHIFT,
+-		    SPFI_TRANSACTION);
++	if (!list_is_last(&xfer->transfer_list, &master->cur_msg->transfers) &&
++		/*
++		 * For duplex mode (both the tx and rx buffers are !NULL) the
++		 * CMD, ADDR, and DUMMY byte parts of the transaction register
++		 * should always be 0 and therefore the pending transfer
++		 * technique cannot be used.
++		 */
++		(xfer->tx_buf) && (!xfer->rx_buf) &&
++		(xfer->len <= SPFI_DATA_REQUEST_MAX_SIZE) && !is_pending) {
++		transact = (1 & SPFI_TRANSACTION_CMD_MASK) <<
++			SPFI_TRANSACTION_CMD_SHIFT;
++		transact |= ((xfer->len - 1) & SPFI_TRANSACTION_ADDR_MASK) <<
++			SPFI_TRANSACTION_ADDR_SHIFT;
++		spfi->complete = false;
++	} else {
++		spfi->complete = true;
++		if (is_pending) {
++			/* Keep setup from pending transfer */
++			transact |= ((xfer->len & SPFI_TRANSACTION_TSIZE_MASK) <<
++				SPFI_TRANSACTION_TSIZE_SHIFT);
++		} else {
++			transact = ((xfer->len & SPFI_TRANSACTION_TSIZE_MASK) <<
++				SPFI_TRANSACTION_TSIZE_SHIFT);
++		}
++	}
++	spfi_writel(spfi, transact, SPFI_TRANSACTION);
+ 
+ 	val = spfi_readl(spfi, SPFI_CONTROL);
+ 	val &= ~(SPFI_CONTROL_SEND_DMA | SPFI_CONTROL_GET_DMA);
+-	if (xfer->tx_buf)
++	/*
++	 * We set up send DMA for pending transfers also, as
++	 * those are always send transfers
++	 */
++	if ((xfer->tx_buf) || is_pending)
+ 		val |= SPFI_CONTROL_SEND_DMA;
+-	if (xfer->rx_buf)
++	if (xfer->tx_buf)
++		val |= SPFI_CONTROL_TX_RX;
++	if (xfer->rx_buf) {
+ 		val |= SPFI_CONTROL_GET_DMA;
++		val &= ~SPFI_CONTROL_TX_RX;
++	}
+ 	val &= ~(SPFI_CONTROL_TMODE_MASK << SPFI_CONTROL_TMODE_SHIFT);
+-	if (xfer->tx_nbits == SPI_NBITS_DUAL &&
++	if (xfer->tx_nbits == SPI_NBITS_DUAL ||
+ 	    xfer->rx_nbits == SPI_NBITS_DUAL)
+ 		val |= SPFI_CONTROL_TMODE_DUAL << SPFI_CONTROL_TMODE_SHIFT;
+-	else if (xfer->tx_nbits == SPI_NBITS_QUAD &&
++	else if (xfer->tx_nbits == SPI_NBITS_QUAD ||
+ 		 xfer->rx_nbits == SPI_NBITS_QUAD)
+ 		val |= SPFI_CONTROL_TMODE_QUAD << SPFI_CONTROL_TMODE_SHIFT;
+ 	val |= SPFI_CONTROL_SE;
diff --git a/target/linux/pistachio/patches-5.15/104-spi-img-spfi-use-device-0-configuration-for-all-devi.patch b/target/linux/pistachio/patches-5.15/104-spi-img-spfi-use-device-0-configuration-for-all-devi.patch
new file mode 100644
index 0000000000..2995b7dd88
--- /dev/null
+++ b/target/linux/pistachio/patches-5.15/104-spi-img-spfi-use-device-0-configuration-for-all-devi.patch
@@ -0,0 +1,64 @@
+From 905ee06a9966113fe51d6bad1819759cb30fd0bd Mon Sep 17 00:00:00 2001
+From: Ionela Voinescu <ionela.voinescu@imgtec.com>
+Date: Tue, 9 Feb 2016 10:18:31 +0000
+Subject: spi: img-spfi: use device 0 configuration for all devices
+
+Given that we control the chip select line externally
+we can use only one parameter register (device 0 parameter
+register) and one set of configuration bits (port configuration
+bits for device 0) for all devices (all chip select lines).
+
+Signed-off-by: Ionela Voinescu <ionela.voinescu@imgtec.com>
+---
+ drivers/spi/spi-img-spfi.c | 23 ++++++++++++++++-------
+ 1 file changed, 16 insertions(+), 7 deletions(-)
+
+--- a/drivers/spi/spi-img-spfi.c
++++ b/drivers/spi/spi-img-spfi.c
+@@ -429,18 +429,23 @@ static int img_spfi_prepare(struct spi_m
+ 	struct img_spfi *spfi = spi_master_get_devdata(master);
+ 	u32 val;
+ 
++	/*
++	 * The chip select line is controlled externally so
++	 * we can use the CS0 configuration for all devices
++	 */
+ 	val = spfi_readl(spfi, SPFI_PORT_STATE);
++
++	/* 0 for device selection */
+ 	val &= ~(SPFI_PORT_STATE_DEV_SEL_MASK <<
+ 		 SPFI_PORT_STATE_DEV_SEL_SHIFT);
+-	val |= msg->spi->chip_select << SPFI_PORT_STATE_DEV_SEL_SHIFT;
+ 	if (msg->spi->mode & SPI_CPHA)
+-		val |= SPFI_PORT_STATE_CK_PHASE(msg->spi->chip_select);
++		val |= SPFI_PORT_STATE_CK_PHASE(0);
+ 	else
+-		val &= ~SPFI_PORT_STATE_CK_PHASE(msg->spi->chip_select);
++		val &= ~SPFI_PORT_STATE_CK_PHASE(0);
+ 	if (msg->spi->mode & SPI_CPOL)
+-		val |= SPFI_PORT_STATE_CK_POL(msg->spi->chip_select);
++		val |= SPFI_PORT_STATE_CK_POL(0);
+ 	else
+-		val &= ~SPFI_PORT_STATE_CK_POL(msg->spi->chip_select);
++		val &= ~SPFI_PORT_STATE_CK_POL(0);
+ 	spfi_writel(spfi, val, SPFI_PORT_STATE);
+ 
+ 	return 0;
+@@ -492,11 +497,15 @@ static void img_spfi_config(struct spi_m
+ 	div = DIV_ROUND_UP(clk_get_rate(spfi->spfi_clk), xfer->speed_hz);
+ 	div = clamp(512 / (1 << get_count_order(div)), 1, 128);
+ 
+-	val = spfi_readl(spfi, SPFI_DEVICE_PARAMETER(spi->chip_select));
++	/*
++	 * The chip select line is controlled externally so
++	 * we can use the CS0 parameters for all devices
++	 */
++	val = spfi_readl(spfi, SPFI_DEVICE_PARAMETER(0));
+ 	val &= ~(SPFI_DEVICE_PARAMETER_BITCLK_MASK <<
+ 		 SPFI_DEVICE_PARAMETER_BITCLK_SHIFT);
+ 	val |= div << SPFI_DEVICE_PARAMETER_BITCLK_SHIFT;
+-	spfi_writel(spfi, val, SPFI_DEVICE_PARAMETER(spi->chip_select));
++	spfi_writel(spfi, val, SPFI_DEVICE_PARAMETER(0));
+ 
+ 	if (!list_is_last(&xfer->transfer_list, &master->cur_msg->transfers) &&
+ 		/*
diff --git a/target/linux/pistachio/patches-5.15/105-spi-img-spfi-RX-maximum-burst-size-for-DMA-is-8.patch b/target/linux/pistachio/patches-5.15/105-spi-img-spfi-RX-maximum-burst-size-for-DMA-is-8.patch
new file mode 100644
index 0000000000..5418503816
--- /dev/null
+++ b/target/linux/pistachio/patches-5.15/105-spi-img-spfi-RX-maximum-burst-size-for-DMA-is-8.patch
@@ -0,0 +1,59 @@
+From 56466f505f58f44b69feb7eaed3b506842800456 Mon Sep 17 00:00:00 2001
+From: Ionela Voinescu <ionela.voinescu@imgtec.com>
+Date: Tue, 1 Mar 2016 17:49:45 +0000
+Subject: spi: img-spfi: RX maximum burst size for DMA is 8
+
+The depth of the FIFOs is 16 bytes. The DMA request line is tied
+to the half full/empty (depending on the use of the TX or RX FIFO)
+threshold. For the TX FIFO, if you set a burst size of 8 (equal to
+half the depth) the first burst goes into FIFO without any issues,
+but due the latency involved (the time the data leaves  the DMA
+engine to the time it arrives at the FIFO), the DMA might trigger
+another burst of 8. But given that there is no space for 2 additonal
+bursts of 8, this would result in a failure. Therefore, we have to
+keep the burst size for TX to 4 to accomodate for an extra burst.
+
+For the read (RX) scenario, the DMA request line goes high when
+there is at least 8 entries in the FIFO (half full), and we can
+program the burst size to be 8 because the risk of accidental burst
+does not exist. The DMA engine will not trigger another read until
+the read data for all the burst it has sent out has been received.
+
+While here, move the burst size setting outside of the if/else branches
+as they have the same value for both 8 and 32 bit data widths.
+
+Signed-off-by: Ionela Voinescu <ionela.voinescu@imgtec.com>
+---
+ drivers/spi/spi-img-spfi.c | 6 ++----
+ 1 file changed, 2 insertions(+), 4 deletions(-)
+
+--- a/drivers/spi/spi-img-spfi.c
++++ b/drivers/spi/spi-img-spfi.c
+@@ -338,12 +338,11 @@ static int img_spfi_start_dma(struct spi
+ 		if (xfer->len % 4 == 0) {
+ 			rxconf.src_addr = spfi->phys + SPFI_RX_32BIT_VALID_DATA;
+ 			rxconf.src_addr_width = 4;
+-			rxconf.src_maxburst = 4;
+ 		} else {
+ 			rxconf.src_addr = spfi->phys + SPFI_RX_8BIT_VALID_DATA;
+ 			rxconf.src_addr_width = 1;
+-			rxconf.src_maxburst = 4;
+ 		}
++		rxconf.src_maxburst = 8;
+ 		dmaengine_slave_config(spfi->rx_ch, &rxconf);
+ 
+ 		rxdesc = dmaengine_prep_slave_sg(spfi->rx_ch, xfer->rx_sg.sgl,
+@@ -362,12 +361,11 @@ static int img_spfi_start_dma(struct spi
+ 		if (xfer->len % 4 == 0) {
+ 			txconf.dst_addr = spfi->phys + SPFI_TX_32BIT_VALID_DATA;
+ 			txconf.dst_addr_width = 4;
+-			txconf.dst_maxburst = 4;
+ 		} else {
+ 			txconf.dst_addr = spfi->phys + SPFI_TX_8BIT_VALID_DATA;
+ 			txconf.dst_addr_width = 1;
+-			txconf.dst_maxburst = 4;
+ 		}
++		txconf.dst_maxburst = 4;
+ 		dmaengine_slave_config(spfi->tx_ch, &txconf);
+ 
+ 		txdesc = dmaengine_prep_slave_sg(spfi->tx_ch, xfer->tx_sg.sgl,
diff --git a/target/linux/pistachio/patches-5.15/106-spi-img-spfi-finish-every-transfer-cleanly.patch b/target/linux/pistachio/patches-5.15/106-spi-img-spfi-finish-every-transfer-cleanly.patch
new file mode 100644
index 0000000000..ea1f9f28cc
--- /dev/null
+++ b/target/linux/pistachio/patches-5.15/106-spi-img-spfi-finish-every-transfer-cleanly.patch
@@ -0,0 +1,120 @@
+From 5fcca3fd4b621d7b5bdeca18d36dfc6ca6cfe383 Mon Sep 17 00:00:00 2001
+From: Ionela Voinescu <ionela.voinescu@imgtec.com>
+Date: Wed, 10 Aug 2016 11:42:26 +0100
+Subject: spi: img-spfi: finish every transfer cleanly
+
+Before this change, the interrupt status bit that signaled
+the end of a tranfers was cleared in the wait_all_done
+function. That functionality triggered issues for DMA
+duplex transactions where the wait function was called
+twice, in both the TX and RX callbacks.
+
+In order to fix the issue, clear all interrupt data bits
+at the end of a PIO transfer or at the end of both TX and RX
+duplex transfers, if the transfer is not a pending tranfer
+(command waiting for data). After that, the status register
+is checked for new incoming data or new data requests to be
+signaled. If SPFI finished cleanly, no new interrupt data
+bits should be set.
+
+Signed-off-by: Ionela Voinescu <ionela.voinescu@imgtec.com>
+---
+ drivers/spi/spi-img-spfi.c | 49 +++++++++++++++++++++++++++++++++-------------
+ 1 file changed, 35 insertions(+), 14 deletions(-)
+
+--- a/drivers/spi/spi-img-spfi.c
++++ b/drivers/spi/spi-img-spfi.c
+@@ -79,6 +79,14 @@
+ #define SPFI_INTERRUPT_SDE			BIT(1)
+ #define SPFI_INTERRUPT_SDTRIG			BIT(0)
+ 
++#define SPFI_INTERRUPT_DATA_BITS		(SPFI_INTERRUPT_SDHF |\
++						SPFI_INTERRUPT_SDFUL |\
++						SPFI_INTERRUPT_GDEX32BIT |\
++						SPFI_INTERRUPT_GDHF |\
++						SPFI_INTERRUPT_GDFUL |\
++						SPFI_INTERRUPT_ALLDONETRIG |\
++						SPFI_INTERRUPT_GDEX8BIT)
++
+ /*
+  * There are four parallel FIFOs of 16 bytes each.  The word buffer
+  * (*_32BIT_VALID_DATA) accesses all four FIFOs at once, resulting in an
+@@ -136,6 +144,23 @@ static inline void spfi_reset(struct img
+ 	spfi_writel(spfi, 0, SPFI_CONTROL);
+ }
+ 
++static inline void spfi_finish(struct img_spfi *spfi)
++{
++	if (!(spfi->complete))
++		return;
++
++	/* Clear data bits as all transfers(TX and RX) have finished */
++	spfi_writel(spfi, SPFI_INTERRUPT_DATA_BITS, SPFI_INTERRUPT_CLEAR);
++	if (spfi_readl(spfi, SPFI_INTERRUPT_STATUS) & SPFI_INTERRUPT_DATA_BITS) {
++		dev_err(spfi->dev, "SPFI did not finish transfer cleanly.\n");
++		spfi_reset(spfi);
++	}
++	/* Disable SPFI for it not to interfere with pending transactions */
++	spfi_writel(spfi,
++		    spfi_readl(spfi, SPFI_CONTROL) & ~SPFI_CONTROL_SPFI_EN,
++		    SPFI_CONTROL);
++}
++
+ static int spfi_wait_all_done(struct img_spfi *spfi)
+ {
+ 	unsigned long timeout = jiffies + msecs_to_jiffies(50);
+@@ -144,19 +169,9 @@ static int spfi_wait_all_done(struct img
+ 		return 0;
+ 
+ 	while (time_before(jiffies, timeout)) {
+-		u32 status = spfi_readl(spfi, SPFI_INTERRUPT_STATUS);
+-
+-		if (status & SPFI_INTERRUPT_ALLDONETRIG) {
+-			spfi_writel(spfi, SPFI_INTERRUPT_ALLDONETRIG,
+-				    SPFI_INTERRUPT_CLEAR);
+-			/*
+-			 * Disable SPFI for it not to interfere with
+-			 * pending transactions
+-			 */
+-			spfi_writel(spfi, spfi_readl(spfi, SPFI_CONTROL)
+-			& ~SPFI_CONTROL_SPFI_EN, SPFI_CONTROL);
++		if (spfi_readl(spfi, SPFI_INTERRUPT_STATUS) &
++		    SPFI_INTERRUPT_ALLDONETRIG)
+ 			return 0;
+-		}
+ 		cpu_relax();
+ 	}
+ 
+@@ -288,6 +303,8 @@ static int img_spfi_start_pio(struct spi
+ 	}
+ 
+ 	ret = spfi_wait_all_done(spfi);
++	spfi_finish(spfi);
++
+ 	if (ret < 0)
+ 		return ret;
+ 
+@@ -303,8 +320,10 @@ static void img_spfi_dma_rx_cb(void *dat
+ 
+ 	spin_lock_irqsave(&spfi->lock, flags);
+ 	spfi->rx_dma_busy = false;
+-	if (!spfi->tx_dma_busy)
++	if (!spfi->tx_dma_busy) {
++		spfi_finish(spfi);
+ 		spi_finalize_current_transfer(spfi->master);
++	}
+ 	spin_unlock_irqrestore(&spfi->lock, flags);
+ }
+ 
+@@ -317,8 +336,10 @@ static void img_spfi_dma_tx_cb(void *dat
+ 
+ 	spin_lock_irqsave(&spfi->lock, flags);
+ 	spfi->tx_dma_busy = false;
+-	if (!spfi->rx_dma_busy)
++	if (!spfi->rx_dma_busy) {
++		spfi_finish(spfi);
+ 		spi_finalize_current_transfer(spfi->master);
++	}
+ 	spin_unlock_irqrestore(&spfi->lock, flags);
+ }
+ 
diff --git a/target/linux/pistachio/patches-5.15/108-clk-pistachio-Fix-wrong-SDHost-card-speed.patch b/target/linux/pistachio/patches-5.15/108-clk-pistachio-Fix-wrong-SDHost-card-speed.patch
new file mode 100644
index 0000000000..6fddbe269a
--- /dev/null
+++ b/target/linux/pistachio/patches-5.15/108-clk-pistachio-Fix-wrong-SDHost-card-speed.patch
@@ -0,0 +1,49 @@
+From 3642843a06025ec333d7e92580cf52cb8db2a652 Mon Sep 17 00:00:00 2001
+From: Govindraj Raja <Govindraj.Raja@imgtec.com>
+Date: Fri, 8 Jan 2016 16:36:07 +0000
+Subject: clk: pistachio: Fix wrong SDHost card speed
+
+The SDHost currently clocks the card 4x slower than it
+should do, because there is fixed divide by 4 in the
+sdhost wrapper that is not present in the clock tree.
+To model this add a fixed divide by 4 clock node in
+the SDHost clock path.
+
+This will ensure the right clock frequency is selected when
+the mmc driver tries to configure frequency on card insert.
+
+Signed-off-by: Govindraj Raja <Govindraj.Raja@imgtec.com>
+---
+ drivers/clk/pistachio/clk-pistachio.c     | 3 ++-
+ include/dt-bindings/clock/pistachio-clk.h | 1 +
+ 2 files changed, 3 insertions(+), 1 deletion(-)
+
+--- a/drivers/clk/pistachio/clk-pistachio.c
++++ b/drivers/clk/pistachio/clk-pistachio.c
+@@ -41,7 +41,7 @@ static struct pistachio_gate pistachio_g
+ 	GATE(CLK_AUX_ADC_INTERNAL, "aux_adc_internal", "sys_internal_div",
+ 	     0x104, 22),
+ 	GATE(CLK_AUX_ADC, "aux_adc", "aux_adc_div", 0x104, 23),
+-	GATE(CLK_SD_HOST, "sd_host", "sd_host_div", 0x104, 24),
++	GATE(CLK_SD_HOST, "sd_host", "sd_host_div4", 0x104, 24),
+ 	GATE(CLK_BT, "bt", "bt_div", 0x104, 25),
+ 	GATE(CLK_BT_DIV4, "bt_div4", "bt_div4_div", 0x104, 26),
+ 	GATE(CLK_BT_DIV8, "bt_div8", "bt_div8_div", 0x104, 27),
+@@ -51,6 +51,7 @@ static struct pistachio_gate pistachio_g
+ static struct pistachio_fixed_factor pistachio_ffs[] __initdata = {
+ 	FIXED_FACTOR(CLK_WIFI_DIV4, "wifi_div4", "wifi_pll", 4),
+ 	FIXED_FACTOR(CLK_WIFI_DIV8, "wifi_div8", "wifi_pll", 8),
++	FIXED_FACTOR(CLK_SDHOST_DIV4, "sd_host_div4", "sd_host_div", 4),
+ };
+ 
+ static struct pistachio_div pistachio_divs[] __initdata = {
+--- a/include/dt-bindings/clock/pistachio-clk.h
++++ b/include/dt-bindings/clock/pistachio-clk.h
+@@ -18,6 +18,7 @@
+ /* Fixed-factor clocks */
+ #define CLK_WIFI_DIV4			16
+ #define CLK_WIFI_DIV8			17
++#define CLK_SDHOST_DIV4			18
+ 
+ /* Gate clocks */
+ #define CLK_MIPS			32
diff --git a/target/linux/pistachio/patches-5.15/109-MIPS-DTS-img-marduk-switch-mmc-to-1-bit-mode.patch b/target/linux/pistachio/patches-5.15/109-MIPS-DTS-img-marduk-switch-mmc-to-1-bit-mode.patch
new file mode 100644
index 0000000000..cec424a0ce
--- /dev/null
+++ b/target/linux/pistachio/patches-5.15/109-MIPS-DTS-img-marduk-switch-mmc-to-1-bit-mode.patch
@@ -0,0 +1,47 @@
+From 981c1d416af45eff207227aec106381ac23aac99 Mon Sep 17 00:00:00 2001
+From: Ian Pozella <Ian.Pozella@imgtec.com>
+Date: Mon, 20 Feb 2017 10:00:52 +0000
+Subject: MIPS: DTS: img: marduk: switch mmc to 1 bit mode
+
+The mmc block in Pistachio allows 1 to 8 data bits to be used.
+Marduk uses 4 bits allowing the upper 4 bits to be allocated
+to the Mikrobus ports. However these bits are still connected
+internally meaning the mmc block recieves signals on all data lines
+and seems the internal HW CRC checks get corrupted by this erroneous
+data.
+
+We cannot control what data is sent on these lines because they go
+to external ports. 1 bit mode does not exhibit the issue hence the
+safe default is to use this. If a user knows that in their use case
+they will not use the upper bits then they can set to 4 bit mode in
+order to improve performance.
+
+Also make sure that the upper 4 bits don't get allocated to the mmc
+driver (the default is to assign all 8 pins) so they can be allocated
+to other drivers. Allocating all 4 despite setting 1 bit mode as this
+matches what is there in hardware.
+
+Signed-off-by: Ian Pozella <Ian.Pozella@imgtec.com>
+---
+ arch/mips/boot/dts/img/pistachio_marduk.dts | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+--- a/arch/mips/boot/dts/img/pistachio_marduk.dts
++++ b/arch/mips/boot/dts/img/pistachio_marduk.dts
+@@ -117,7 +117,7 @@
+ 
+ &sdhost {
+ 	status = "okay";
+-	bus-width = <4>;
++	bus-width = <1>;
+ 	disable-wp;
+ };
+ 
+@@ -127,6 +127,7 @@
+ 
+ &pin_sdhost_data {
+ 	drive-strength = <2>;
++	pins = "mfio17", "mfio18", "mfio19", "mfio20";
+ };
+ 
+ &pwm {
diff --git a/target/linux/pistachio/patches-5.15/401-mtd-nor-support-mtd-name-from-device-tree.patch b/target/linux/pistachio/patches-5.15/401-mtd-nor-support-mtd-name-from-device-tree.patch
new file mode 100644
index 0000000000..c6569c81ce
--- /dev/null
+++ b/target/linux/pistachio/patches-5.15/401-mtd-nor-support-mtd-name-from-device-tree.patch
@@ -0,0 +1,54 @@
+From f32bc2aa01edcba2f2ed5db151cf183eac9ef919 Mon Sep 17 00:00:00 2001
+From: Abhimanyu Vishwakarma <Abhimanyu.Vishwakarma@imgtec.com>
+Date: Sat, 25 Feb 2017 16:42:50 +0000
+Subject: mtd: nor: support mtd name from device tree
+
+Signed-off-by: Abhimanyu Vishwakarma <Abhimanyu.Vishwakarma@imgtec.com>
+---
+ drivers/mtd/spi-nor/spi-nor.c | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+--- a/drivers/mtd/spi-nor/core.c
++++ b/drivers/mtd/spi-nor/core.c
+@@ -3143,6 +3143,7 @@ int spi_nor_scan(struct spi_nor *nor, co
+ 	struct device *dev = nor->dev;
+ 	struct mtd_info *mtd = &nor->mtd;
+ 	struct device_node *np = spi_nor_get_flash_node(nor);
++	const char __maybe_unused *of_mtd_name = NULL;
+ 	int ret;
+ 	int i;
+ 
+@@ -3197,7 +3198,12 @@ int spi_nor_scan(struct spi_nor *nor, co
+ 	if (ret)
+ 		return ret;
+ 
+-	if (!mtd->name)
++#ifdef CONFIG_MTD_OF_PARTS
++	of_property_read_string(np, "linux,mtd-name", &of_mtd_name);
++#endif
++	if (of_mtd_name)
++		mtd->name = of_mtd_name;
++	else if (!mtd->name)
+ 		mtd->name = dev_name(dev);
+ 	mtd->priv = nor;
+ 	mtd->type = MTD_NORFLASH;
+--- a/drivers/mtd/mtdcore.c
++++ b/drivers/mtd/mtdcore.c
+@@ -850,6 +850,17 @@ out_error:
+  */
+ static void mtd_set_dev_defaults(struct mtd_info *mtd)
+ {
++#ifdef CONFIG_MTD_OF_PARTS
++	const char __maybe_unused *of_mtd_name = NULL;
++	struct device_node *np;
++
++	np = mtd_get_of_node(mtd);
++	if (np && !mtd->name) {
++		of_property_read_string(np, "linux,mtd-name", &of_mtd_name);
++		if (of_mtd_name)
++			mtd->name = of_mtd_name;
++	} else
++#endif
+ 	if (mtd->dev.parent) {
+ 		if (!mtd->owner && mtd->dev.parent->driver)
+ 			mtd->owner = mtd->dev.parent->driver->owner;
diff --git a/target/linux/pistachio/patches-5.15/901-MIPS-DTS-img-marduk-Add-SPI-NAND-flash.patch b/target/linux/pistachio/patches-5.15/901-MIPS-DTS-img-marduk-Add-SPI-NAND-flash.patch
new file mode 100644
index 0000000000..cd97e38e00
--- /dev/null
+++ b/target/linux/pistachio/patches-5.15/901-MIPS-DTS-img-marduk-Add-SPI-NAND-flash.patch
@@ -0,0 +1,30 @@
+From 0023c706f7e0f0f02bd48a63a2f3c04c839532ae Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Sat, 15 Aug 2020 16:04:53 +0200
+Subject: [PATCH 901/904] MIPS: DTS: img: marduk: Add SPI NAND flash
+
+Add Gigadevice GD5F4GQ4UCYIGT SPI NAND flash to the device tree.
+
+The NAND flash chip is connected with quad SPI, but reading currently
+fails in quad SPI mode.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ arch/mips/boot/dts/img/pistachio_marduk.dts | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/arch/mips/boot/dts/img/pistachio_marduk.dts
++++ b/arch/mips/boot/dts/img/pistachio_marduk.dts
+@@ -88,6 +88,12 @@
+ 		reg = <0>;
+ 		spi-max-frequency = <50000000>;
+ 	};
++
++	flash@1 {
++		compatible = "spi-nand";
++		reg = <1>;
++		spi-max-frequency = <50000000>;
++	};
+ };
+ 
+ &uart0 {
diff --git a/target/linux/pistachio/patches-5.15/902-MIPS-DTS-img-marduk-Add-Cascoda-CA8210-6LoWPAN.patch b/target/linux/pistachio/patches-5.15/902-MIPS-DTS-img-marduk-Add-Cascoda-CA8210-6LoWPAN.patch
new file mode 100644
index 0000000000..af1882e287
--- /dev/null
+++ b/target/linux/pistachio/patches-5.15/902-MIPS-DTS-img-marduk-Add-Cascoda-CA8210-6LoWPAN.patch
@@ -0,0 +1,43 @@
+From b7700154d75e8d7c9a2022f09c2d5430137606fa Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Sat, 15 Aug 2020 16:05:25 +0200
+Subject: [PATCH 902/904] MIPS: DTS: img: marduk: Add Cascoda CA8210 6LoWPAN
+
+Add Cascoda CA8210 6LoWPAN controller to device tree.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ arch/mips/boot/dts/img/pistachio_marduk.dts | 22 +++++++++++++++++++++
+ 1 file changed, 22 insertions(+)
+
+--- a/arch/mips/boot/dts/img/pistachio_marduk.dts
++++ b/arch/mips/boot/dts/img/pistachio_marduk.dts
+@@ -75,6 +75,28 @@
+ 	VDD-supply = <&internal_dac_supply>;
+ };
+ 
++&spfi0 {
++	status = "okay";
++	pinctrl-0 = <&spim0_pins>, <&spim0_cs0_alt_pin>, <&spim0_cs2_alt_pin>, <&spim0_cs3_alt_pin>, <&spim0_cs4_alt_pin>;
++	pinctrl-names = "default";
++
++	cs-gpios = <&gpio1 14 GPIO_ACTIVE_HIGH>, <&gpio0 2 GPIO_ACTIVE_HIGH>,
++			<&gpio1 12 GPIO_ACTIVE_HIGH>, <&gpio1 13 GPIO_ACTIVE_HIGH>;
++
++	ca8210: ca8210@0 {
++		status = "okay";
++		compatible = "cascoda,ca8210";
++		reg = <0>;
++		spi-max-frequency = <4000000>;
++		spi-cpol;
++		reset-gpio = <&gpio0 12 GPIO_ACTIVE_HIGH>;
++		irq-gpio = <&gpio2 12 GPIO_ACTIVE_HIGH>;
++		extclock-enable;
++		extclock-freq = <16000000>;
++		extclock-gpio = <2>;
++	};
++};
++
+ &spfi1 {
+ 	status = "okay";
+ 
diff --git a/target/linux/pistachio/patches-5.15/903-MIPS-DTS-img-marduk-Add-NXP-SC16IS752IPW.patch b/target/linux/pistachio/patches-5.15/903-MIPS-DTS-img-marduk-Add-NXP-SC16IS752IPW.patch
new file mode 100644
index 0000000000..0814658998
--- /dev/null
+++ b/target/linux/pistachio/patches-5.15/903-MIPS-DTS-img-marduk-Add-NXP-SC16IS752IPW.patch
@@ -0,0 +1,81 @@
+From ad4eba0c36ce8af6ab9ea1bc163e4c1ac7c271c3 Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Sat, 15 Aug 2020 16:09:02 +0200
+Subject: [PATCH 903/904] MIPS: DTS: img: marduk: Add NXP SC16IS752IPW
+
+Add NXP SC16IS752IPW SPI-UART controller to device tree.
+
+This controller drives 2 UARTs and 7 LEDs on the board.
+
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+---
+ arch/mips/boot/dts/img/pistachio_marduk.dts | 51 +++++++++++++++++++++
+ 1 file changed, 51 insertions(+)
+
+--- a/arch/mips/boot/dts/img/pistachio_marduk.dts
++++ b/arch/mips/boot/dts/img/pistachio_marduk.dts
+@@ -46,6 +46,46 @@
+ 		regulator-max-microvolt = <1800000>;
+ 	};
+ 
++	/* EXT clock from ca8210 is fed to sc16is752 */
++	ca8210_ext_clk: ca8210-ext-clk {
++		compatible = "fixed-clock";
++		#clock-cells = <0>;
++		clock-frequency = <16000000>;
++		clock-output-names = "ca8210_ext_clock";
++	};
++
++	gpioleds {
++		compatible = "gpio-leds";
++		user1 {
++			label = "marduk:red:user1";
++			gpios = <&sc16is752 0 GPIO_ACTIVE_LOW>;
++		};
++		user2 {
++			label = "marduk:red:user2";
++			gpios = <&sc16is752 1 GPIO_ACTIVE_LOW>;
++		};
++		user3 {
++			label = "marduk:red:user3";
++			gpios = <&sc16is752 2 GPIO_ACTIVE_LOW>;
++		};
++		user4 {
++			label = "marduk:red:user4";
++			gpios = <&sc16is752 3 GPIO_ACTIVE_LOW>;
++		};
++		user5 {
++			label = "marduk:red:user5";
++			gpios = <&sc16is752 4 GPIO_ACTIVE_LOW>;
++		};
++		user6 {
++			label = "marduk:red:user6";
++			gpios = <&sc16is752 5 GPIO_ACTIVE_LOW>;
++		};
++		user7 {
++			label = "marduk:red:user7";
++			gpios = <&sc16is752 6 GPIO_ACTIVE_LOW>;
++		};
++	};
++
+ 	leds {
+ 		compatible = "pwm-leds";
+ 		heartbeat {
+@@ -95,6 +135,17 @@
+ 		extclock-freq = <16000000>;
+ 		extclock-gpio = <2>;
+ 	};
++
++	sc16is752: sc16is752@1 {
++		compatible = "nxp,sc16is752";
++		reg = <1>;
++		clocks = <&ca8210_ext_clk>;
++		spi-max-frequency = <4000000>;
++		interrupt-parent = <&gpio0>;
++		interrupts = <11 IRQ_TYPE_EDGE_FALLING>;
++		gpio-controller;
++		#gpio-cells = <2>;
++	};
+ };
+ 
+ &spfi1 {
diff --git a/target/linux/pistachio/patches-5.15/904-MIPS-DTS-img-marduk-Add-partition-name.patch b/target/linux/pistachio/patches-5.15/904-MIPS-DTS-img-marduk-Add-partition-name.patch
new file mode 100644
index 0000000000..ce41c67461
--- /dev/null
+++ b/target/linux/pistachio/patches-5.15/904-MIPS-DTS-img-marduk-Add-partition-name.patch
@@ -0,0 +1,27 @@
+From ff0e950b605047bf50d470023e0fb2fc2003a0f0 Mon Sep 17 00:00:00 2001
+From: Ian Pozella <Ian.Pozella@imgtec.com>
+Date: Mon, 20 Feb 2017 10:38:07 +0000
+Subject: [PATCH 904/904] MIPS: DTS: img: marduk: Add partition name
+
+Signed-off-by: Ian Pozella <Ian.Pozella@imgtec.com>
+---
+ arch/mips/boot/dts/img/pistachio_marduk.dts | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/arch/mips/boot/dts/img/pistachio_marduk.dts
++++ b/arch/mips/boot/dts/img/pistachio_marduk.dts
+@@ -160,12 +160,14 @@
+ 		compatible = "spansion,s25fl016k", "jedec,spi-nor";
+ 		reg = <0>;
+ 		spi-max-frequency = <50000000>;
++		linux,mtd-name = "spi-nor";
+ 	};
+ 
+ 	flash@1 {
+ 		compatible = "spi-nand";
+ 		reg = <1>;
+ 		spi-max-frequency = <50000000>;
++		linux,mtd-name = "spi-nand";
+ 	};
+ };
+ 
diff --git a/target/linux/pistachio/patches-5.15/905-MIPS-DTS-img-marduk-Add-led-aliases.patch b/target/linux/pistachio/patches-5.15/905-MIPS-DTS-img-marduk-Add-led-aliases.patch
new file mode 100644
index 0000000000..c6cf5acbb8
--- /dev/null
+++ b/target/linux/pistachio/patches-5.15/905-MIPS-DTS-img-marduk-Add-led-aliases.patch
@@ -0,0 +1,27 @@
+--- a/arch/mips/boot/dts/img/pistachio_marduk.dts
++++ b/arch/mips/boot/dts/img/pistachio_marduk.dts
+@@ -19,6 +19,11 @@
+ 		ethernet0 = &enet;
+ 		spi0 = &spfi0;
+ 		spi1 = &spfi1;
++
++		led-boot = &led_heartbeat;
++		led-failsafe = &led_heartbeat;
++		led-running = &led_heartbeat;
++		led-upgrade = &led_heartbeat;
+ 	};
+ 
+ 	chosen {
+@@ -88,11 +93,10 @@
+ 
+ 	leds {
+ 		compatible = "pwm-leds";
+-		heartbeat {
++		led_heartbeat: heartbeat {
+ 			label = "marduk:red:heartbeat";
+ 			pwms = <&pwm 3 300000>;
+ 			max-brightness = <255>;
+-			linux,default-trigger = "heartbeat";
+ 		};
+ 	};
+