This is a note to let you know that I've just added the patch titled arm64: dts: meson: sm1: add Ethernet PHY reset line for ODROID-C4/HC4 to the 5.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: arm64-dts-meson-sm1-add-ethernet-phy-reset-line-for-.patch and it can be found in the queue-5.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit acb0b73ef2f1d02a8f80b4e17b7f73ebe2499f0f Author: Dongjin Kim <tobetter@xxxxxxxxx> Date: Thu Aug 26 12:28:32 2021 +0900 arm64: dts: meson: sm1: add Ethernet PHY reset line for ODROID-C4/HC4 [ Upstream commit 9d02214f8332d5dbbcce3d6c5c915e54d43a0c46 ] This patch is to fix an issue that the ethernet link doesn't come up when using ip link set down/up: [ 11.428114] meson8b-dwmac ff3f0000.ethernet eth0: Link is Down [ 14.428595] meson8b-dwmac ff3f0000.ethernet eth0: PHY [0.0:00] driver [RTL8211F Gigabit Ethernet] (irq=31) [ 14.428610] meson8b-dwmac ff3f0000.ethernet: Failed to reset the dma [ 14.428974] meson8b-dwmac ff3f0000.ethernet eth0: stmmac_hw_setup: DMA engine initialization failed [ 14.711185] meson8b-dwmac ff3f0000.ethernet eth0: stmmac_open: Hw setup failed This fix refers to two commits applied for ODROID-N2 (G12B). commit 658e4129bb81 ("arm64: dts: meson: g12b: odroid-n2: add the Ethernet PHY reset line") commit 1c7412530d5d0 ("arm64: dts: meson: g12b: odroid-n2: fix PHY deassert timing requirements") Fixes: 88d537bc92ca ("arm64: dts: meson: convert meson-sm1-odroid-c4 to dtsi") Signed-off-by: Dongjin Kim <tobetter@xxxxxxxxx> Reviewed-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx> [narmstrong: added fixes tag and typo in commit log] Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx> Link: https://lore.kernel.org/r/YScKYFWlYymgGw3l@anyang-linuxfactory-or-kr Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1-odroid.dtsi b/arch/arm64/boot/dts/amlogic/meson-sm1-odroid.dtsi index fd0ad85c165ba..45e7fcb062f96 100644 --- a/arch/arm64/boot/dts/amlogic/meson-sm1-odroid.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-sm1-odroid.dtsi @@ -263,6 +263,10 @@ reg = <0>; max-speed = <1000>; + reset-assert-us = <10000>; + reset-deassert-us = <80000>; + reset-gpios = <&gpio GPIOZ_15 (GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN)>; + interrupt-parent = <&gpio_intc>; /* MAC_INTR on GPIOZ_14 */ interrupts = <26 IRQ_TYPE_LEVEL_LOW>;