This is a note to let you know that I've just added the patch titled arm64: dts: imx8mm-kontron: Fix reset delays for ethernet PHY to the 5.15-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-imx8mm-kontron-fix-reset-delays-for-ethern.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit c7edd4d16396d540b52c034edeb52d9e4e392c2b Author: Frieder Schrempf <frieder.schrempf@xxxxxxxxxx> Date: Thu Sep 30 17:56:30 2021 +0200 arm64: dts: imx8mm-kontron: Fix reset delays for ethernet PHY [ Upstream commit 315e7b884190a6c9c28e95ad3b724dde9e922b99 ] According to the datasheet the VSC8531 PHY expects a reset pulse of 100 ns and a delay of 15 ms after the reset has been deasserted. Set the matching values in the devicetree. Reported-by: Heiko Thiery <heiko.thiery@xxxxxxxxx> Signed-off-by: Frieder Schrempf <frieder.schrempf@xxxxxxxxxx> Signed-off-by: Shawn Guo <shawnguo@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts index e99e7644ff392..49d7470812eef 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-s.dts @@ -123,8 +123,8 @@ mdio { ethphy: ethernet-phy@0 { reg = <0>; - reset-assert-us = <100>; - reset-deassert-us = <100>; + reset-assert-us = <1>; + reset-deassert-us = <15000>; reset-gpios = <&gpio4 27 GPIO_ACTIVE_LOW>; }; };