[openwrt/openwrt] kernel/bcm4908: Restore kernel files for v6.6
LEDE Commits
lede-commits at lists.infradead.org
Mon Nov 17 12:51:30 PST 2025
ansuel pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/8a8fb241f7ffc390910ac6261ee588b728251329
commit 8a8fb241f7ffc390910ac6261ee588b728251329
Author: Stefan Kalscheuer <stefan at stklcode.de>
AuthorDate: Tue Nov 4 19:57:17 2025 +0100
kernel/bcm4908: Restore kernel files for v6.6
This is an automatically generated commit which aids following Kernel patch
history, as git will see the move and copy as a rename thus defeating the
purpose.
For the original discussion see:
https://lists.openwrt.org/pipermail/openwrt-devel/2023-October/041673.html
Signed-off-by: Stefan Kalscheuer <stefan at stklcode.de>
Link: https://github.com/openwrt/openwrt/pull/20169
Signed-off-by: Christian Marangi <ansuelsmth at gmail.com>
---
target/linux/bcm4908/config-6.6 | 277 +++++++++++++++++++++
...roadcom-bcmbca-bcm4908-set-brcm-wp-not-co.patch | 31 +++
...roadcom-bcmbca-bcm4908-limit-amount-of-GP.patch | 23 ++
.../301-arm64-don-t-issue-HVC-on-boot.patch | 30 +++
...sa-bcm_sf2-enable-GPHY-for-switch-probing.patch | 46 ++++
...-bcm_sf2-keep-GPHY-enabled-on-the-BCM4908.patch | 30 +++
6 files changed, 437 insertions(+)
diff --git a/target/linux/bcm4908/config-6.6 b/target/linux/bcm4908/config-6.6
new file mode 100644
index 0000000000..f31e2de9ea
--- /dev/null
+++ b/target/linux/bcm4908/config-6.6
@@ -0,0 +1,277 @@
+CONFIG_64BIT=y
+CONFIG_ARCH_BCM=y
+CONFIG_ARCH_BCMBCA=y
+CONFIG_ARCH_BINFMT_ELF_EXTRA_PHDRS=y
+CONFIG_ARCH_CORRECT_STACKTRACE_ON_KRETPROBE=y
+CONFIG_ARCH_DEFAULT_KEXEC_IMAGE_VERIFY_SIG=y
+CONFIG_ARCH_DMA_ADDR_T_64BIT=y
+CONFIG_ARCH_FORCE_MAX_ORDER=10
+CONFIG_ARCH_KEEP_MEMBLOCK=y
+CONFIG_ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE=y
+CONFIG_ARCH_MMAP_RND_BITS=18
+CONFIG_ARCH_MMAP_RND_BITS_MAX=24
+CONFIG_ARCH_MMAP_RND_BITS_MIN=18
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=11
+CONFIG_ARCH_PROC_KCORE_TEXT=y
+CONFIG_ARCH_SPARSEMEM_ENABLE=y
+CONFIG_ARCH_STACKWALK=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARCH_WANTS_NO_INSTR=y
+CONFIG_ARCH_WANTS_THP_SWAP=y
+CONFIG_ARM64=y
+CONFIG_ARM64_4K_PAGES=y
+CONFIG_ARM64_LD_HAS_FIX_ERRATUM_843419=y
+CONFIG_ARM64_PAGE_SHIFT=12
+CONFIG_ARM64_PA_BITS=48
+CONFIG_ARM64_PA_BITS_48=y
+CONFIG_ARM64_PTR_AUTH=y
+CONFIG_ARM64_PTR_AUTH_KERNEL=y
+CONFIG_ARM64_SVE=y
+CONFIG_ARM64_TAGGED_ADDR_ABI=y
+CONFIG_ARM64_VA_BITS=39
+CONFIG_ARM64_VA_BITS_39=y
+CONFIG_ARM_AMBA=y
+CONFIG_ARM_ARCH_TIMER=y
+CONFIG_ARM_ARCH_TIMER_EVTSTREAM=y
+CONFIG_ARM_GIC=y
+CONFIG_ARM_GIC_V3=y
+CONFIG_ARM_GIC_V3_ITS=y
+CONFIG_ARM_PSCI_FW=y
+CONFIG_AUDIT_ARCH_COMPAT_GENERIC=y
+CONFIG_B53=y
+CONFIG_BCM4908_ENET=y
+CONFIG_BCM7038_WDT=y
+CONFIG_BCM7XXX_PHY=y
+CONFIG_BCM_NET_PHYLIB=y
+CONFIG_BCM_PMB=y
+# CONFIG_BLK_DEV_INITRD is not set
+CONFIG_BLK_PM=y
+CONFIG_BUILTIN_RETURN_ADDRESS_STRIPS_PAC=y
+CONFIG_CC_HAVE_SHADOW_CALL_STACK=y
+CONFIG_CC_HAVE_STACKPROTECTOR_SYSREG=y
+CONFIG_CLK_BCM_63XX=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_CMDLINE="earlycon=bcm63xx_uart,0xff800640 console=ttyS0,115200"
+CONFIG_CMDLINE_FROM_BOOTLOADER=y
+CONFIG_COMMON_CLK=y
+CONFIG_COMMON_CLK_IPROC=y
+CONFIG_COMPACT_UNEVICTABLE_DEFAULT=1
+# CONFIG_COMPAT_32BIT_TIME is not set
+CONFIG_CONTEXT_TRACKING=y
+CONFIG_CONTEXT_TRACKING_IDLE=y
+CONFIG_CPU_LITTLE_ENDIAN=y
+CONFIG_CPU_RMAP=y
+CONFIG_CRC16=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_CRYPTD=y
+CONFIG_CRYPTO_DEFLATE=y
+CONFIG_CRYPTO_GHASH_ARM64_CE=y
+CONFIG_CRYPTO_HASH_INFO=y
+CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
+CONFIG_CRYPTO_LIB_GF128MUL=y
+CONFIG_CRYPTO_LIB_SHA1=y
+CONFIG_CRYPTO_LIB_UTILS=y
+CONFIG_CRYPTO_LZO=y
+CONFIG_CRYPTO_ZSTD=y
+CONFIG_DCACHE_WORD_ACCESS=y
+CONFIG_DEBUG_INFO=y
+CONFIG_DMA_BOUNCE_UNALIGNED_KMALLOC=y
+CONFIG_DMA_DIRECT_REMAP=y
+CONFIG_DTC=y
+CONFIG_EDAC_SUPPORT=y
+CONFIG_EXCLUSIVE_SYSTEM_RAM=y
+CONFIG_FIXED_PHY=y
+CONFIG_FIX_EARLYCON_MEM=y
+CONFIG_FRAME_POINTER=y
+CONFIG_FS_IOMAP=y
+CONFIG_FUNCTION_ALIGNMENT=4
+CONFIG_FUNCTION_ALIGNMENT_4B=y
+CONFIG_FWNODE_MDIO=y
+CONFIG_FW_LOADER_PAGED_BUF=y
+CONFIG_FW_LOADER_SYSFS=y
+CONFIG_GCC_ASM_GOTO_OUTPUT_WORKAROUND=y
+CONFIG_GCC_SUPPORTS_DYNAMIC_FTRACE_WITH_ARGS=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_IOREMAP=y
+CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
+CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED=y
+CONFIG_GENERIC_MSI_IRQ=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_STRNCPY_FROM_USER=y
+CONFIG_GENERIC_STRNLEN_USER=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GPIO_CDEV=y
+CONFIG_GPIO_GENERIC=y
+CONFIG_GPIO_GENERIC_PLATFORM=y
+CONFIG_GRO_CELLS=y
+CONFIG_HARDIRQS_SW_RESEND=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HZ_PERIODIC=y
+CONFIG_I2C=y
+CONFIG_I2C_BOARDINFO=y
+CONFIG_I2C_BRCMSTB=y
+CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
+CONFIG_IRQCHIP=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_DOMAIN_HIERARCHY=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_WORK=y
+CONFIG_LEDS_BCM63138=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LIBFDT=y
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+CONFIG_LOCK_SPIN_ON_OWNER=y
+CONFIG_LZO_COMPRESS=y
+CONFIG_LZO_DECOMPRESS=y
+CONFIG_MDIO_BCM_UNIMAC=y
+CONFIG_MDIO_BUS=y
+CONFIG_MDIO_DEVICE=y
+CONFIG_MDIO_DEVRES=y
+CONFIG_MFD_SYSCON=y
+CONFIG_MIGRATION=y
+# CONFIG_MITIGATE_SPECTRE_BRANCH_HISTORY is not set
+CONFIG_MMU_LAZY_TLB_REFCOUNT=y
+CONFIG_MODULES_USE_ELF_RELA=y
+CONFIG_MTD_BRCM_U_BOOT=y
+CONFIG_MTD_CMDLINE_PARTS=y
+CONFIG_MTD_NAND_BRCMNAND=y
+CONFIG_MTD_NAND_BRCMNAND_BCMBCA=y
+CONFIG_MTD_NAND_CORE=y
+CONFIG_MTD_NAND_ECC=y
+CONFIG_MTD_NAND_ECC_SW_HAMMING=y
+CONFIG_MTD_OF_PARTS_BCM4908=y
+# CONFIG_MTD_OF_PARTS_LINKSYS_NS is not set
+CONFIG_MTD_RAW_NAND=y
+CONFIG_MTD_SPLIT_CFE_BOOTFS=y
+# CONFIG_MTD_SPLIT_SQUASHFS_ROOT is not set
+CONFIG_MTD_UBI=y
+CONFIG_MTD_UBI_BEB_LIMIT=20
+CONFIG_MTD_UBI_BLOCK=y
+CONFIG_MTD_UBI_WL_THRESHOLD=4096
+CONFIG_MUTEX_SPIN_ON_OWNER=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEED_SG_DMA_LENGTH=y
+CONFIG_NET_DEVLINK=y
+CONFIG_NET_DSA=y
+CONFIG_NET_DSA_BCM_SF2=y
+CONFIG_NET_DSA_TAG_BRCM=y
+CONFIG_NET_DSA_TAG_BRCM_COMMON=y
+CONFIG_NET_DSA_TAG_BRCM_LEGACY=y
+CONFIG_NET_DSA_TAG_BRCM_PREPEND=y
+CONFIG_NET_DSA_TAG_NONE=y
+CONFIG_NET_EGRESS=y
+CONFIG_NET_FLOW_LIMIT=y
+CONFIG_NET_INGRESS=y
+CONFIG_NET_SELFTESTS=y
+CONFIG_NET_XGRESS=y
+CONFIG_NO_IOPORT_MAP=y
+CONFIG_NR_CPUS=4
+CONFIG_NVMEM=y
+CONFIG_NVMEM_LAYOUTS=y
+CONFIG_NVMEM_SYSFS=y
+CONFIG_NVMEM_U_BOOT_ENV=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_PADATA=y
+CONFIG_PAGE_POOL=y
+CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
+CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
+CONFIG_PARTITION_PERCPU=y
+CONFIG_PER_VMA_LOCK=y
+CONFIG_PGTABLE_LEVELS=3
+CONFIG_PHYLIB=y
+CONFIG_PHYLIB_LEDS=y
+CONFIG_PHYLINK=y
+CONFIG_PHYS_ADDR_T_64BIT=y
+# CONFIG_PHY_BRCM_SATA is not set
+CONFIG_PHY_BRCM_USB=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_BCM4908=y
+# CONFIG_PINCTRL_SINGLE is not set
+CONFIG_PM=y
+CONFIG_PM_CLK=y
+CONFIG_PM_GENERIC_DOMAINS=y
+CONFIG_PM_GENERIC_DOMAINS_OF=y
+CONFIG_POSIX_CPU_TIMERS_TASK_WORK=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_SYSCON=y
+CONFIG_POWER_SUPPLY=y
+CONFIG_PREEMPT_NONE_BUILD=y
+CONFIG_PTP_1588_CLOCK_OPTIONAL=y
+CONFIG_QUEUED_RWLOCKS=y
+CONFIG_QUEUED_SPINLOCKS=y
+CONFIG_RANDSTRUCT_NONE=y
+CONFIG_RATIONAL=y
+CONFIG_REGMAP=y
+CONFIG_REGMAP_MMIO=y
+CONFIG_RELOCATABLE=y
+CONFIG_RFS_ACCEL=y
+CONFIG_RODATA_FULL_DEFAULT_ENABLED=y
+CONFIG_RPS=y
+CONFIG_RWSEM_SPIN_ON_OWNER=y
+# CONFIG_SERIAL_8250 is not set
+CONFIG_SERIAL_BCM63XX=y
+CONFIG_SERIAL_BCM63XX_CONSOLE=y
+CONFIG_SGL_ALLOC=y
+CONFIG_SMP=y
+CONFIG_SOCK_RX_QUEUE_MAPPING=y
+CONFIG_SOFTIRQ_ON_OWN_STACK=y
+CONFIG_SPARSEMEM=y
+CONFIG_SPARSEMEM_EXTREME=y
+CONFIG_SPARSEMEM_VMEMMAP=y
+CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
+CONFIG_SPARSE_IRQ=y
+CONFIG_SQUASHFS_DECOMP_MULTI_PERCPU=y
+CONFIG_SWIOTLB=y
+CONFIG_SWPHY=y
+CONFIG_SYSCTL_EXCEPTION_TRACE=y
+CONFIG_THREAD_INFO_IN_TASK=y
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TIMER_OF=y
+CONFIG_TIMER_PROBE=y
+CONFIG_TRACE_IRQFLAGS_NMI_SUPPORT=y
+CONFIG_TREE_RCU=y
+CONFIG_TREE_SRCU=y
+CONFIG_UBIFS_FS=y
+CONFIG_UNMAP_KERNEL_AT_EL0=y
+CONFIG_USB_SUPPORT=y
+CONFIG_VMAP_STACK=y
+CONFIG_WATCHDOG_CORE=y
+CONFIG_XPS=y
+CONFIG_XXHASH=y
+CONFIG_ZLIB_DEFLATE=y
+CONFIG_ZLIB_INFLATE=y
+CONFIG_ZONE_DMA32=y
+CONFIG_ZSTD_COMMON=y
+CONFIG_ZSTD_COMPRESS=y
+CONFIG_ZSTD_DECOMPRESS=y
diff --git a/target/linux/bcm4908/patches-6.6/130-arm64-dts-broadcom-bcmbca-bcm4908-set-brcm-wp-not-co.patch b/target/linux/bcm4908/patches-6.6/130-arm64-dts-broadcom-bcmbca-bcm4908-set-brcm-wp-not-co.patch
new file mode 100644
index 0000000000..a6e174da7c
--- /dev/null
+++ b/target/linux/bcm4908/patches-6.6/130-arm64-dts-broadcom-bcmbca-bcm4908-set-brcm-wp-not-co.patch
@@ -0,0 +1,31 @@
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal at milecki.pl>
+Date: Thu, 28 Mar 2024 10:24:34 +0100
+Subject: [PATCH] arm64: dts: broadcom: bcmbca: bcm4908: set
+ brcm,wp-not-connected
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Every described BCM4908 board has WP pin not connected. This caused
+problems for drivers since day 0 but there was no property to describe
+that properly. Projects like OpenWrt were modifying Linux driver to deal
+with it.
+
+It's not clear if that is hardware limitation or just reference design
+being copied over and over but this applies to all known / supported
+BCM4908 boards. Handle it by marking WP as not connected by default.
+
+Fixes: 2961f69f151c ("arm64: dts: broadcom: add BCM4908 and Asus GT-AC5300 early DTS files")
+Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
+---
+
+--- a/arch/arm64/boot/dts/broadcom/bcmbca/bcm4908.dtsi
++++ b/arch/arm64/boot/dts/broadcom/bcmbca/bcm4908.dtsi
+@@ -594,6 +594,7 @@
+ reg-names = "nand", "nand-int-base";
+ interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "nand_ctlrdy";
++ brcm,wp-not-connected;
+ status = "okay";
+
+ nandcs: nand at 0 {
diff --git a/target/linux/bcm4908/patches-6.6/300-arm64-dts-broadcom-bcmbca-bcm4908-limit-amount-of-GP.patch b/target/linux/bcm4908/patches-6.6/300-arm64-dts-broadcom-bcmbca-bcm4908-limit-amount-of-GP.patch
new file mode 100644
index 0000000000..ed18d66bbf
--- /dev/null
+++ b/target/linux/bcm4908/patches-6.6/300-arm64-dts-broadcom-bcmbca-bcm4908-limit-amount-of-GP.patch
@@ -0,0 +1,23 @@
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal at milecki.pl>
+Date: Mon, 15 Feb 2021 22:01:03 +0100
+Subject: [PATCH] arm64: dts: broadcom: bcmbca: bcm4908: limit amount of GPIOs
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Linux driver can't handle more than 64 GPIOs
+
+Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
+---
+
+--- a/arch/arm64/boot/dts/broadcom/bcmbca/bcm4908.dtsi
++++ b/arch/arm64/boot/dts/broadcom/bcmbca/bcm4908.dtsi
+@@ -341,7 +341,7 @@
+ gpio0: gpio-controller at 500 {
+ compatible = "brcm,bcm6345-gpio";
+ reg-names = "dirout", "dat";
+- reg = <0x500 0x28>, <0x528 0x28>;
++ reg = <0x500 0x8>, <0x528 0x8>;
+
+ #gpio-cells = <2>;
+ gpio-controller;
diff --git a/target/linux/bcm4908/patches-6.6/301-arm64-don-t-issue-HVC-on-boot.patch b/target/linux/bcm4908/patches-6.6/301-arm64-don-t-issue-HVC-on-boot.patch
new file mode 100644
index 0000000000..be1b4a0e4d
--- /dev/null
+++ b/target/linux/bcm4908/patches-6.6/301-arm64-don-t-issue-HVC-on-boot.patch
@@ -0,0 +1,30 @@
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal at milecki.pl>
+Date: Thu, 12 Aug 2021 11:52:42 +0200
+Subject: [PATCH] arm64: don't issue HVC on boot
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Broadcom's CFE loader seems to miss setting SCR_EL3.HCE which results in
+generating an UNDEF and kernel panic on the first HVC.
+
+HVC gets issued by kernels 5.12+ while booting, by kexec and KVM. Until
+someone finds a workaround we have to avoid all above.
+
+Workarounds: 0c93df9622d4 ("arm64: Initialise as nVHE before switching to VHE")
+Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
+---
+ arch/arm64/kernel/hyp-stub.S | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/arm64/kernel/hyp-stub.S
++++ b/arch/arm64/kernel/hyp-stub.S
+@@ -252,7 +252,7 @@ SYM_FUNC_START(finalise_el2)
+ b.ne 1f
+
+ mov x0, #HVC_FINALISE_EL2
+- hvc #0
++// hvc #0
+ 1:
+ ret
+ SYM_FUNC_END(finalise_el2)
diff --git a/target/linux/bcm4908/patches-6.6/700-net-dsa-bcm_sf2-enable-GPHY-for-switch-probing.patch b/target/linux/bcm4908/patches-6.6/700-net-dsa-bcm_sf2-enable-GPHY-for-switch-probing.patch
new file mode 100644
index 0000000000..8961bb298c
--- /dev/null
+++ b/target/linux/bcm4908/patches-6.6/700-net-dsa-bcm_sf2-enable-GPHY-for-switch-probing.patch
@@ -0,0 +1,46 @@
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal at milecki.pl>
+Date: Mon, 15 Feb 2021 23:59:26 +0100
+Subject: [PATCH] net: dsa: bcm_sf2: enable GPHY for switch probing
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+GPHY needs to be enabled to succesfully probe & setup switch port
+connected to it. Otherwise hardcoding PHY OUI would be required.
+
+Before:
+brcm-sf2 80080000.switch lan4 (uninitialized): PHY [800c05c0.mdio--1:08] driver [Generic PHY] (irq=POLL)
+brcm-sf2 80080000.switch lan3 (uninitialized): PHY [800c05c0.mdio--1:09] driver [Generic PHY] (irq=POLL)
+brcm-sf2 80080000.switch lan2 (uninitialized): PHY [800c05c0.mdio--1:0a] driver [Generic PHY] (irq=POLL)
+brcm-sf2 80080000.switch lan1 (uninitialized): PHY [800c05c0.mdio--1:0b] driver [Generic PHY] (irq=POLL)
+brcm-sf2 80080000.switch wan (uninitialized): error -5 setting up PHY for tree 0, switch 0, port 7
+
+After:
+brcm-sf2 80080000.switch lan4 (uninitialized): PHY [800c05c0.mdio--1:08] driver [Generic PHY] (irq=POLL)
+brcm-sf2 80080000.switch lan3 (uninitialized): PHY [800c05c0.mdio--1:09] driver [Generic PHY] (irq=POLL)
+brcm-sf2 80080000.switch lan2 (uninitialized): PHY [800c05c0.mdio--1:0a] driver [Generic PHY] (irq=POLL)
+brcm-sf2 80080000.switch lan1 (uninitialized): PHY [800c05c0.mdio--1:0b] driver [Generic PHY] (irq=POLL)
+brcm-sf2 80080000.switch wan (uninitialized): PHY [800c05c0.mdio--1:0c] driver [Generic PHY] (irq=POLL)
+
+Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
+---
+ drivers/net/dsa/bcm_sf2.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/net/dsa/bcm_sf2.c
++++ b/drivers/net/dsa/bcm_sf2.c
+@@ -1524,10 +1524,14 @@ static int bcm_sf2_sw_probe(struct platf
+ rev = reg_readl(priv, REG_PHY_REVISION);
+ priv->hw_params.gphy_rev = rev & PHY_REVISION_MASK;
+
++ bcm_sf2_gphy_enable_set(priv->dev->ds, true);
++
+ ret = b53_switch_register(dev);
+ if (ret)
+ goto out_mdio;
+
++ bcm_sf2_gphy_enable_set(priv->dev->ds, false);
++
+ dev_info(&pdev->dev,
+ "Starfighter 2 top: %x.%02x, core: %x.%02x, IRQs: %d, %d\n",
+ priv->hw_params.top_rev >> 8, priv->hw_params.top_rev & 0xff,
diff --git a/target/linux/bcm4908/patches-6.6/701-net-dsa-bcm_sf2-keep-GPHY-enabled-on-the-BCM4908.patch b/target/linux/bcm4908/patches-6.6/701-net-dsa-bcm_sf2-keep-GPHY-enabled-on-the-BCM4908.patch
new file mode 100644
index 0000000000..ff3f44910b
--- /dev/null
+++ b/target/linux/bcm4908/patches-6.6/701-net-dsa-bcm_sf2-keep-GPHY-enabled-on-the-BCM4908.patch
@@ -0,0 +1,30 @@
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal at milecki.pl>
+Date: Tue, 16 Feb 2021 00:06:35 +0100
+Subject: [PATCH] net: dsa: bcm_sf2: keep GPHY enabled on the BCM4908
+
+Trying to access disabled PHY results in MDIO_READ_FAIL and:
+[ 11.962886] brcm-sf2 80080000.switch wan: configuring for phy/internal link mode
+[ 11.972500] 8021q: adding VLAN 0 to HW filter on device wan
+[ 11.980205] ------------[ cut here ]------------
+[ 11.984885] WARNING: CPU: 0 PID: 7 at phy_error+0x10/0x58
+
+Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
+---
+ drivers/net/dsa/bcm_sf2.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/drivers/net/dsa/bcm_sf2.c
++++ b/drivers/net/dsa/bcm_sf2.c
+@@ -1538,6 +1538,12 @@ static int bcm_sf2_sw_probe(struct platf
+ priv->hw_params.core_rev >> 8, priv->hw_params.core_rev & 0xff,
+ priv->irq0, priv->irq1);
+
++ /* BCM4908 has 5 GPHYs which means bcm_sf2_port_setup() will not enable
++ * GPHY when needed. Leave it enabled here.
++ */
++ if (priv->type == BCM4908_DEVICE_ID)
++ bcm_sf2_gphy_enable_set(priv->dev->ds, true);
++
+ return 0;
+
+ out_mdio:
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