This is a note to let you know that I've just added the patch titled ARM: dts: stm32: Fix PHY post-reset delay on Avenger96 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: arm-dts-stm32-fix-phy-post-reset-delay-on-avenger96.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 bde494a79b3c062c16f5dec69f43f042bcec241c Author: Marek Vasut <marex@xxxxxxx> Date: Fri Mar 25 18:58:51 2022 +0100 ARM: dts: stm32: Fix PHY post-reset delay on Avenger96 [ Upstream commit ef2d90708883f4025a801feb0ba8411a7a4387e1 ] Per KSZ9031RNX PHY datasheet FIGURE 7-5: POWER-UP/POWER-DOWN/RESET TIMING Note 2: After the de-assertion of reset, wait a minimum of 100 μs before starting programming on the MIIM (MDC/MDIO) interface. Add 1ms post-reset delay to guarantee this figure. Fixes: 010ca9fe500bf ("ARM: dts: stm32: Add missing ethernet PHY reset on AV96") Signed-off-by: Marek Vasut <marex@xxxxxxx> Cc: Alexandre Torgue <alexandre.torgue@xxxxxxxxxxx> Cc: Patrice Chotard <patrice.chotard@xxxxxxxxxxx> Cc: Patrick Delaunay <patrick.delaunay@xxxxxxxxxxx> Cc: linux-stm32@xxxxxxxxxxxxxxxxxxxxxxxxxxxx To: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx Signed-off-by: Alexandre Torgue <alexandre.torgue@xxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/arch/arm/boot/dts/stm32mp15xx-dhcor-avenger96.dtsi b/arch/arm/boot/dts/stm32mp15xx-dhcor-avenger96.dtsi index 6885948f3024..8eb51d84b698 100644 --- a/arch/arm/boot/dts/stm32mp15xx-dhcor-avenger96.dtsi +++ b/arch/arm/boot/dts/stm32mp15xx-dhcor-avenger96.dtsi @@ -141,6 +141,7 @@ mdio0 { compatible = "snps,dwmac-mdio"; reset-gpios = <&gpioz 2 GPIO_ACTIVE_LOW>; reset-delay-us = <1000>; + reset-post-delay-us = <1000>; phy0: ethernet-phy@7 { reg = <7>;