This is a note to let you know that I've just added the patch titled ARM: dts: stm32: lxa-mc1: Fix kernel warning about PHY delays to the 5.8-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: arm-dts-stm32-lxa-mc1-fix-kernel-warning-about-phy-d.patch and it can be found in the queue-5.8 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit c1f17b44a2eb9ec1fd3a7f0ae654bb91284901bb Author: Holger Assmann <h.assmann@xxxxxxxxxxxxxx> Date: Fri Aug 7 17:03:56 2020 +0200 ARM: dts: stm32: lxa-mc1: Fix kernel warning about PHY delays [ Upstream commit 42a31ac6698681363363d48335559d212a26a7ca ] The KSZ9031 PHY skew timings for rxc/txc, originally set to achieve the desired phase shift between clock- and data-signal, now trigger a kernel warning when used in rgmii-id mode: *-skew-ps values should be used only with phy-mode = "rgmii" This is because commit bcf3440c6dd7 ("net: phy: micrel: add phy-mode support for the KSZ9031 PHY") now configures own timings when phy-mode = "rgmii-id". Device trees wanting to set their own delays should use phy-mode "rgmii" instead as the warning prescribes. The "standard" timings now used with "rgmii-id" work fine on this board, so drop the explicit timings in the device tree and thereby silence the warning. Fixes: 666b5ca85cd3 ("ARM: dts: stm32: add STM32MP1-based Linux Automation MC-1 board") Signed-off-by: Holger Assmann <h.assmann@xxxxxxxxxxxxxx> Acked-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx> Signed-off-by: Alexandre Torgue <alexandre.torgue@xxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/arch/arm/boot/dts/stm32mp157c-lxa-mc1.dts b/arch/arm/boot/dts/stm32mp157c-lxa-mc1.dts index 5700e6b700d36..b85025d009437 100644 --- a/arch/arm/boot/dts/stm32mp157c-lxa-mc1.dts +++ b/arch/arm/boot/dts/stm32mp157c-lxa-mc1.dts @@ -121,8 +121,6 @@ ethphy: ethernet-phy@3 { /* KSZ9031RN */ reset-gpios = <&gpiog 0 GPIO_ACTIVE_LOW>; /* ETH_RST# */ interrupt-parent = <&gpioa>; interrupts = <6 IRQ_TYPE_EDGE_FALLING>; /* ETH_MDINT# */ - rxc-skew-ps = <1860>; - txc-skew-ps = <1860>; reset-assert-us = <10000>; reset-deassert-us = <300>; micrel,force-master;