octeontx: add linux 5.10 testing kernel support

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..8b3a7f68b2
--- /dev/null
+++ b/target/linux/octeontx/config-5.10
@@ -0,0 +1,430 @@ 
+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_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_F2FS_FS=y
+CONFIG_FANOTIFY=y
+CONFIG_FAT_FS=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_HZ=250
+# CONFIG_HZ_100 is not set
+CONFIG_HZ_250=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_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 */