octeontx: add linux 5.10 testing kernel support

Changes from 5.4 to 5.10:
-------------------------
 - patches from 5.4 are all upstream for 5.10 execpt for
   0004-PCI-add-quirk-for-Gateworks-PLX-PEX860x-switch-with-.patch

 - disable block device data integrity (DIF/DIX/T10) in default config
   (CONFIG_BLK_DEV_INTEGRITY)
   This feature is only supported by:
     - Enterprise SAS/SCSI HBAs and Disks
     - Software raid
     - NVMEs with metadata capabilities (most don't have this)
   None of which are part of any octeontx boards.

 - arm64 TEXT_OFFSET (0x80000) has been removed after 5.4
   This will break Uimages with kernel load addresses that aren't 2MiB
   aligned any longer. Resulting in the kernel silently fail to boot.
   For Gatworks newport boards for example, the uimage kernel load
   and execute address is 0x20080000. These need to be changed to
   0x20000000 when running kernels beyond 5.4.

Tested-on: Gateworks Newport GW64xx

Signed-off-by: Daniel Danzberger <daniel@dd-wrt.com>

3 files changed, 483 insertions, 0 deletions

diff --git a/target/linux/octeontx/Makefile b/target/linux/octeontx/Makefile
index c30799b744..44bbc76a43 100644
--- a/target/linux/octeontx/Makefile
+++ b/target/linux/octeontx/Makefile
@@ -10,6 +10,7 @@ BOARDNAME:=Octeon-TX
 FEATURES:=targz pcie gpio rtc usb fpu
 
 KERNEL_PATCHVER:=5.4
+KERNEL_TESTING_PATCHVER:=5.10
 
 define Target/Description
 	Build images for Octeon-TX CN80XX/CN81XX based boards
diff --git a/target/linux/octeontx/config-5.10 b/target/linux/octeontx/config-5.10
new file mode 100644
index 0000000000..6e9cdc1de2
--- /dev/null
+++ b/target/linux/octeontx/config-5.10
@@ -0,0 +1,423 @@
+CONFIG_64BIT=y
+CONFIG_ARCH_DMA_ADDR_T_64BIT=y
+CONFIG_ARCH_HIBERNATION_HEADER=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_KEEP_MEMBLOCK=y
+CONFIG_ARCH_MMAP_RND_BITS=18
+CONFIG_ARCH_MMAP_RND_BITS_MAX=33
+CONFIG_ARCH_MMAP_RND_BITS_MIN=18
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=11
+CONFIG_ARCH_PROC_KCORE_TEXT=y
+CONFIG_ARCH_SELECT_MEMORY_MODEL=y
+CONFIG_ARCH_SPARSEMEM_DEFAULT=y
+CONFIG_ARCH_SPARSEMEM_ENABLE=y
+CONFIG_ARCH_STACKWALK=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARCH_THUNDER=y
+CONFIG_ARM64=y
+CONFIG_ARM64_4K_PAGES=y
+CONFIG_ARM64_CNP=y
+CONFIG_ARM64_CRYPTO=y
+CONFIG_ARM64_ERRATUM_1165522=y
+CONFIG_ARM64_ERRATUM_1286807=y
+CONFIG_ARM64_ERRATUM_819472=y
+CONFIG_ARM64_ERRATUM_824069=y
+CONFIG_ARM64_ERRATUM_826319=y
+CONFIG_ARM64_ERRATUM_827319=y
+CONFIG_ARM64_ERRATUM_843419=y
+CONFIG_ARM64_HW_AFDBM=y
+CONFIG_ARM64_MODULE_PLTS=y
+CONFIG_ARM64_PAGE_SHIFT=12
+CONFIG_ARM64_PAN=y
+CONFIG_ARM64_PA_BITS=48
+CONFIG_ARM64_PA_BITS_48=y
+CONFIG_ARM64_PTR_AUTH=y
+CONFIG_ARM64_SVE=y
+CONFIG_ARM64_TAGGED_ADDR_ABI=y
+CONFIG_ARM64_UAO=y
+CONFIG_ARM64_VA_BITS=48
+# CONFIG_ARM64_VA_BITS_39 is not set
+CONFIG_ARM64_VA_BITS_48=y
+CONFIG_ARM64_VHE=y
+CONFIG_ARM64_WORKAROUND_CLEAN_CACHE=y
+CONFIG_ARM64_WORKAROUND_REPEAT_TLBI=y
+CONFIG_ARM64_WORKAROUND_SPECULATIVE_AT=y
+CONFIG_ARM_AMBA=y
+CONFIG_ARM_ARCH_TIMER=y
+CONFIG_ARM_ARCH_TIMER_EVTSTREAM=y
+CONFIG_ARM_CPUIDLE=y
+CONFIG_ARM_GIC=y
+CONFIG_ARM_GIC_V2M=y
+CONFIG_ARM_GIC_V3=y
+CONFIG_ARM_GIC_V3_ITS=y
+CONFIG_ARM_GIC_V3_ITS_PCI=y
+CONFIG_ARM_PSCI_FW=y
+CONFIG_ARM_SBSA_WATCHDOG=y
+CONFIG_ATA=y
+# CONFIG_ATA_SFF is not set
+CONFIG_AUDIT_ARCH_COMPAT_GENERIC=y
+CONFIG_BALLOON_COMPACTION=y
+CONFIG_BLK_DEV_BSG=y
+CONFIG_BLK_DEV_BSGLIB=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_MQ_PCI=y
+CONFIG_BLK_MQ_VIRTIO=y
+CONFIG_BLK_PM=y
+CONFIG_BLK_SCSI_REQUEST=y
+CONFIG_CAVIUM_ERRATUM_22375=y
+CONFIG_CAVIUM_ERRATUM_23144=y
+CONFIG_CAVIUM_ERRATUM_23154=y
+CONFIG_CAVIUM_ERRATUM_27456=y
+CONFIG_CAVIUM_ERRATUM_30115=y
+CONFIG_CAVIUM_TX2_ERRATUM_219=y
+CONFIG_CC_HAVE_STACKPROTECTOR_SYSREG=y
+CONFIG_CLKDEV_LOOKUP=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_CMA=y
+CONFIG_CMA_ALIGNMENT=8
+CONFIG_CMA_AREAS=7
+# CONFIG_CMA_DEBUG is not set
+# CONFIG_CMA_DEBUGFS is not set
+CONFIG_CMA_SIZE_MBYTES=16
+# CONFIG_CMA_SIZE_SEL_MAX is not set
+CONFIG_CMA_SIZE_SEL_MBYTES=y
+# CONFIG_CMA_SIZE_SEL_MIN is not set
+# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
+CONFIG_COMMON_CLK=y
+CONFIG_COMMON_CLK_CS2000_CP=y
+# CONFIG_COMPAT_32BIT_TIME is not set
+CONFIG_CONFIGFS_FS=y
+CONFIG_CONTIG_ALLOC=y
+CONFIG_CPU_IDLE=y
+CONFIG_CPU_IDLE_GOV_MENU=y
+CONFIG_CPU_IDLE_MULTIPLE_DRIVERS=y
+CONFIG_CPU_PM=y
+CONFIG_CPU_RMAP=y
+CONFIG_CRASH_CORE=y
+CONFIG_CRASH_DUMP=y
+CONFIG_CRC16=y
+CONFIG_CRC7=y
+CONFIG_CRC_ITU_T=y
+CONFIG_CRC_T10DIF=y
+CONFIG_CRYPTO_AES_ARM64=y
+CONFIG_CRYPTO_AES_ARM64_CE=y
+CONFIG_CRYPTO_AES_ARM64_CE_BLK=y
+CONFIG_CRYPTO_AES_ARM64_CE_CCM=y
+CONFIG_CRYPTO_ANSI_CPRNG=y
+CONFIG_CRYPTO_CRC32=y
+CONFIG_CRYPTO_CRC32C=y
+CONFIG_CRYPTO_CRCT10DIF=y
+CONFIG_CRYPTO_CRYPTD=y
+CONFIG_CRYPTO_DRBG=y
+CONFIG_CRYPTO_DRBG_HMAC=y
+CONFIG_CRYPTO_DRBG_MENU=y
+CONFIG_CRYPTO_ECHAINIV=y
+CONFIG_CRYPTO_GF128MUL=y
+CONFIG_CRYPTO_GHASH_ARM64_CE=y
+CONFIG_CRYPTO_HMAC=y
+CONFIG_CRYPTO_JITTERENTROPY=y
+CONFIG_CRYPTO_LIB_SHA256=y
+CONFIG_CRYPTO_NULL2=y
+CONFIG_CRYPTO_RNG=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_RNG_DEFAULT=y
+CONFIG_CRYPTO_SHA1=y
+CONFIG_CRYPTO_SHA1_ARM64_CE=y
+CONFIG_CRYPTO_SHA256=y
+CONFIG_CRYPTO_SHA256_ARM64=y
+CONFIG_CRYPTO_SHA2_ARM64_CE=y
+CONFIG_CRYPTO_SIMD=y
+CONFIG_DCACHE_WORD_ACCESS=y
+CONFIG_DMADEVICES=y
+CONFIG_DMA_CMA=y
+CONFIG_DMA_DIRECT_REMAP=y
+CONFIG_DMA_ENGINE=y
+CONFIG_DMA_OF=y
+CONFIG_DMA_PERNUMA_CMA=y
+CONFIG_DMA_REMAP=y
+CONFIG_DMA_SHARED_BUFFER=y
+CONFIG_DTC=y
+CONFIG_DT_IDLE_STATES=y
+CONFIG_EDAC=y
+# CONFIG_EDAC_DEBUG is not set
+# CONFIG_EDAC_DMC520 is not set
+CONFIG_EDAC_LEGACY_SYSFS=y
+CONFIG_EDAC_SUPPORT=y
+CONFIG_EDAC_THUNDERX=y
+# CONFIG_EDAC_XGENE is not set
+CONFIG_EEPROM_AT24=y
+CONFIG_FIXED_PHY=y
+CONFIG_FIX_EARLYCON_MEM=y
+CONFIG_FRAME_POINTER=y
+CONFIG_FREEZER=y
+CONFIG_FS_IOMAP=y
+CONFIG_FS_MBCACHE=y
+CONFIG_FS_POSIX_ACL=y
+CONFIG_FUJITSU_ERRATUM_010001=y
+CONFIG_FW_CACHE=y
+CONFIG_FW_LOADER_PAGED_BUF=y
+CONFIG_GENERIC_ALLOCATOR=y
+CONFIG_GENERIC_ARCH_TOPOLOGY=y
+CONFIG_GENERIC_BUG=y
+CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
+CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_CPU_VULNERABILITIES=y
+CONFIG_GENERIC_CSUM=y
+CONFIG_GENERIC_EARLY_IOREMAP=y
+CONFIG_GENERIC_GETTIMEOFDAY=y
+CONFIG_GENERIC_IDLE_POLL_SETUP=y
+CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
+CONFIG_GENERIC_IRQ_MIGRATION=y
+CONFIG_GENERIC_IRQ_MULTI_HANDLER=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
+CONFIG_GENERIC_MSI_IRQ=y
+CONFIG_GENERIC_MSI_IRQ_DOMAIN=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_PHY=y
+CONFIG_GENERIC_SCHED_CLOCK=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_STRNCPY_FROM_USER=y
+CONFIG_GENERIC_STRNLEN_USER=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GLOB=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIOLIB_IRQCHIP=y
+CONFIG_GPIO_PCA953X=y
+CONFIG_GPIO_PCA953X_IRQ=y
+CONFIG_GPIO_THUNDERX=y
+CONFIG_HANDLE_DOMAIN_IRQ=y
+CONFIG_HARDIRQS_SW_RESEND=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT_MAP=y
+CONFIG_HIBERNATE_CALLBACKS=y
+CONFIG_HIBERNATION=y
+CONFIG_HIBERNATION_SNAPSHOT_DEV=y
+CONFIG_HOLES_IN_ZONE=y
+CONFIG_HOTPLUG_CPU=y
+CONFIG_HUGETLBFS=y
+CONFIG_HUGETLB_PAGE=y
+CONFIG_HWSPINLOCK=y
+CONFIG_HW_RANDOM=y
+CONFIG_HW_RANDOM_CAVIUM=y
+CONFIG_HW_RANDOM_OPTEE=y
+CONFIG_I2C=y
+CONFIG_I2C_ALGOBIT=y
+CONFIG_I2C_BOARDINFO=y
+CONFIG_I2C_CHARDEV=y
+CONFIG_I2C_MUX=y
+CONFIG_I2C_SMBUS=y
+CONFIG_I2C_THUNDERX=y
+CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_IRQCHIP=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_DOMAIN_HIERARCHY=y
+CONFIG_IRQ_FASTEOI_HIERARCHY_HANDLERS=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_TIME_ACCOUNTING=y
+CONFIG_IRQ_WORK=y
+# CONFIG_ISDN is not set
+CONFIG_JBD2=y
+CONFIG_JUMP_LABEL=y
+CONFIG_KEXEC=y
+CONFIG_KEXEC_CORE=y
+CONFIG_KSM=y
+CONFIG_LIBFDT=y
+CONFIG_LLD_VERSION=0
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+CONFIG_LOCK_SPIN_ON_OWNER=y
+CONFIG_LZO_COMPRESS=y
+CONFIG_LZO_DECOMPRESS=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_MAILBOX=y
+# CONFIG_MAILBOX_TEST is not set
+CONFIG_MDIO_BUS=y
+CONFIG_MDIO_CAVIUM=y
+CONFIG_MDIO_DEVICE=y
+CONFIG_MDIO_DEVRES=y
+CONFIG_MDIO_THUNDER=y
+CONFIG_MEMFD_CREATE=y
+CONFIG_MEMORY_BALLOON=y
+CONFIG_MEMORY_ISOLATION=y
+CONFIG_MEMTEST=y
+CONFIG_MFD_SYSCON=y
+CONFIG_MIGRATION=y
+CONFIG_MMC=y
+CONFIG_MMC_BLOCK=y
+CONFIG_MMC_CAVIUM_THUNDERX=y
+CONFIG_MODULES_USE_ELF_RELA=y
+CONFIG_MSDOS_FS=y
+# CONFIG_MTD is not set
+CONFIG_MUTEX_SPIN_ON_OWNER=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEED_MULTIPLE_NODES=y
+CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
+CONFIG_NEED_SG_DMA_LENGTH=y
+CONFIG_NET_FLOW_LIMIT=y
+CONFIG_NLS=y
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_ISO8859_1=y
+CONFIG_NODES_SHIFT=2
+CONFIG_NO_HZ_COMMON=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_NR_CPUS=64
+CONFIG_NUMA=y
+CONFIG_NUMA_BALANCING=y
+CONFIG_NUMA_BALANCING_DEFAULT_ENABLED=y
+CONFIG_NVMEM=y
+CONFIG_NVMEM_SYSFS=y
+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_OF_NUMA=y
+CONFIG_OPTEE=y
+CONFIG_OPTEE_SHM_NUM_PRIV_PAGES=1
+CONFIG_PADATA=y
+CONFIG_PAGE_REPORTING=y
+CONFIG_PARAVIRT=y
+CONFIG_PARTITION_PERCPU=y
+CONFIG_PCI=y
+CONFIG_PCIEAER=y
+CONFIG_PCIEPORTBUS=y
+CONFIG_PCIE_PME=y
+CONFIG_PCI_ATS=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_DOMAINS_GENERIC=y
+CONFIG_PCI_ECAM=y
+CONFIG_PCI_HOST_COMMON=y
+CONFIG_PCI_HOST_GENERIC=y
+CONFIG_PCI_HOST_THUNDER_ECAM=y
+CONFIG_PCI_HOST_THUNDER_PEM=y
+CONFIG_PCI_IOV=y
+CONFIG_PCI_MSI=y
+CONFIG_PCI_MSI_IRQ_DOMAIN=y
+CONFIG_PGTABLE_LEVELS=4
+CONFIG_PHYLIB=y
+CONFIG_PHYS_ADDR_T_64BIT=y
+CONFIG_PM=y
+CONFIG_PM_CLK=y
+CONFIG_PM_SLEEP=y
+CONFIG_PM_SLEEP_SMP=y
+CONFIG_PM_STD_PARTITION=""
+CONFIG_POSIX_MQUEUE=y
+CONFIG_POSIX_MQUEUE_SYSCTL=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_SYSCON=y
+CONFIG_POWER_RESET_XGENE=y
+CONFIG_POWER_SUPPLY=y
+CONFIG_PROC_VMCORE=y
+CONFIG_QUEUED_RWLOCKS=y
+CONFIG_QUEUED_SPINLOCKS=y
+CONFIG_RAS=y
+CONFIG_RATIONAL=y
+# CONFIG_RAVE_SP_CORE is not set
+CONFIG_REBOOT_MODE=y
+CONFIG_REGMAP=y
+CONFIG_REGMAP_I2C=y
+CONFIG_REGMAP_MMIO=y
+CONFIG_RESET_CONTROLLER=y
+CONFIG_RFS_ACCEL=y
+CONFIG_RODATA_FULL_DEFAULT_ENABLED=y
+CONFIG_RPS=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_DS1672=y
+CONFIG_RTC_I2C_AND_SPI=y
+CONFIG_RWSEM_SPIN_ON_OWNER=y
+CONFIG_SATA_AHCI=y
+CONFIG_SATA_AHCI_PLATFORM=y
+CONFIG_SATA_HOST=y
+CONFIG_SCHED_INFO=y
+CONFIG_SCHED_MC=y
+CONFIG_SCSI=y
+# CONFIG_SCSI_LOWLEVEL is not set
+# CONFIG_SCSI_PROC_FS is not set
+CONFIG_SCSI_SAS_ATA=y
+CONFIG_SCSI_SAS_ATTRS=y
+CONFIG_SCSI_SAS_HOST_SMP=y
+CONFIG_SCSI_SAS_LIBSAS=y
+CONFIG_SECCOMP=y
+CONFIG_SECCOMP_FILTER=y
+CONFIG_SERIAL_8250_DW=y
+CONFIG_SERIAL_8250_DWLIB=y
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_FSL=y
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_AMBA_PL011=y
+CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
+CONFIG_SERIAL_DEV_BUS=y
+CONFIG_SERIAL_DEV_CTRL_TTYPORT=y
+CONFIG_SERIAL_MCTRL_GPIO=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SERIAL_XILINX_PS_UART=y
+CONFIG_SERIAL_XILINX_PS_UART_CONSOLE=y
+CONFIG_SG_POOL=y
+CONFIG_SMP=y
+CONFIG_SPARSEMEM=y
+CONFIG_SPARSEMEM_EXTREME=y
+CONFIG_SPARSEMEM_MANUAL=y
+CONFIG_SPARSEMEM_VMEMMAP=y
+CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
+CONFIG_SPARSE_IRQ=y
+CONFIG_SPI=y
+CONFIG_SPI_MASTER=y
+CONFIG_SPI_THUNDERX=y
+CONFIG_SRAM=y
+CONFIG_SRCU=y
+CONFIG_SWIOTLB=y
+CONFIG_SWPHY=y
+CONFIG_SYNC_FILE=y
+CONFIG_SYSCON_REBOOT_MODE=y
+CONFIG_SYSCTL_EXCEPTION_TRACE=y
+CONFIG_SYS_SUPPORTS_HUGETLBFS=y
+CONFIG_TASKSTATS=y
+CONFIG_TASK_DELAY_ACCT=y
+CONFIG_TASK_IO_ACCOUNTING=y
+CONFIG_TASK_XACCT=y
+CONFIG_TEE=y
+CONFIG_THREAD_INFO_IN_TASK=y
+CONFIG_THUNDER_NIC_BGX=y
+CONFIG_THUNDER_NIC_PF=y
+CONFIG_THUNDER_NIC_RGX=y
+CONFIG_THUNDER_NIC_VF=y
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TIMER_OF=y
+CONFIG_TIMER_PROBE=y
+CONFIG_TRANSPARENT_HUGEPAGE=y
+CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y
+# CONFIG_TRANSPARENT_HUGEPAGE_MADVISE is not set
+CONFIG_TRANSPARENT_HUGE_PAGECACHE=y
+CONFIG_TREE_RCU=y
+CONFIG_TREE_SRCU=y
+CONFIG_UNMAP_KERNEL_AT_EL0=y
+CONFIG_USB=y
+CONFIG_USB_COMMON=y
+CONFIG_USB_PCI=y
+CONFIG_USB_SUPPORT=y
+# CONFIG_USB_UHCI_HCD is not set
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_XHCI_PCI=y
+CONFIG_USB_XHCI_PLATFORM=y
+CONFIG_USE_PERCPU_NUMA_NODE_ID=y
+CONFIG_VIRTIO=y
+CONFIG_VIRTIO_BALLOON=y
+# CONFIG_VIRTIO_BLK is not set
+CONFIG_VIRTIO_MMIO=y
+# CONFIG_VIRTIO_NET is not set
+CONFIG_VIRTIO_PCI=y
+CONFIG_VIRTIO_PCI_LEGACY=y
+CONFIG_VMAP_STACK=y
+CONFIG_WATCHDOG_CORE=y
+CONFIG_XARRAY_MULTI=y
+CONFIG_XPS=y
+CONFIG_XXHASH=y
+CONFIG_ZONE_DMA32=y
diff --git a/target/linux/octeontx/patches-5.10/0004-PCI-add-quirk-for-Gateworks-PLX-PEX860x-switch-with-.patch b/target/linux/octeontx/patches-5.10/0004-PCI-add-quirk-for-Gateworks-PLX-PEX860x-switch-with-.patch
new file mode 100644
index 0000000000..e33a28e953
--- /dev/null
+++ b/target/linux/octeontx/patches-5.10/0004-PCI-add-quirk-for-Gateworks-PLX-PEX860x-switch-with-.patch
@@ -0,0 +1,59 @@
+From d0ff7a1bcfe886cab1a237895b08ac51ecfe10e7 Mon Sep 17 00:00:00 2001
+From: Tim Harvey <tharvey@gateworks.com>
+Date: Wed, 10 Apr 2019 08:00:47 -0700
+Subject: [PATCH 04/12] PCI: add quirk for Gateworks PLX PEX860x switch with
+ GPIO PERST#
+
+Gateworks boards use PLX PEX860x switches where downstream ports
+have their PERST# driven from the PEX GPIO.
+
+Signed-off-by: Tim Harvey <tharvey@gateworks.com>
+---
+ drivers/pci/quirks.c | 32 ++++++++++++++++++++++++++++++++
+ 1 file changed, 32 insertions(+)
+
+--- a/drivers/pci/quirks.c
++++ b/drivers/pci/quirks.c
+@@ -25,6 +25,7 @@
+ #include <linux/ktime.h>
+ #include <linux/mm.h>
+ #include <linux/nvme.h>
++#include <linux/of.h>
+ #include <linux/platform_data/x86/apple.h>
+ #include <linux/pm_runtime.h>
+ #include <linux/switchtec.h>
+@@ -5625,3 +5626,34 @@ static void apex_pci_fixup_class(struct
+ }
+ DECLARE_PCI_FIXUP_CLASS_HEADER(0x1ac1, 0x089a,
+ 			       PCI_CLASS_NOT_DEFINED, 8, apex_pci_fixup_class);
++
++#ifdef CONFIG_PCI_HOST_THUNDER_PEM
++/*
++ * fixup for PLX PEX8909 bridge to configure GPIO1-7 as output High
++ * as they are used for slots1-7 PERST#
++ */
++static void newport_pciesw_early_fixup(struct pci_dev *dev)
++{
++	u32 dw;
++
++	if (!of_machine_is_compatible("gw,newport"))
++		return;
++
++	if (dev->devfn != 0)
++		return;
++
++	dev_info(&dev->dev, "de-asserting PERST#\n");
++	pci_read_config_dword(dev, 0x62c, &dw);
++	dw |= 0xaaa8; /* GPIO1-7 outputs */
++	pci_write_config_dword(dev, 0x62c, dw);
++
++	pci_read_config_dword(dev, 0x644, &dw);
++	dw |= 0xfe;   /* GPIO1-7 output high */
++	pci_write_config_dword(dev, 0x644, dw);
++
++	msleep(100);
++}
++DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8609, newport_pciesw_early_fixup);
++DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8606, newport_pciesw_early_fixup);
++DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8604, newport_pciesw_early_fixup);
++#endif /* CONFIG_PCI_HOST_THUNDER_PEM */