From 5255901fb26efcb91eee1739aded174ff6c6443e Mon Sep 17 00:00:00 2001 From: Bartosz Golaszewski Date: Thu, 10 Aug 2023 10:09:04 +0200 Subject: [PATCH] arm64: dts: qcom: sa8775p-ride: move the reset-gpios property of the PHY Device-tree bindings for MDIO define per-PHY reset-gpios as well as a global reset-gpios property at the MDIO node level which controls all devices on the bus. The latter is most likely a workaround for the chicken-and-egg problem where we cannot read the ID of the PHY before bringing it out of reset but we cannot bring it out of reset until we've read its ID. I have proposed a comprehensive solution for this problem in 2020 but it never got upstream. We do however have workaround in place which allows us to hard-code the PHY id in the compatible property, thus skipping the ID scanning. Let's make the device-tree for sa8775p-ride slightly more correct by moving the reset-gpios property to the PHY node with its ID put into the PHY node's compatible. Link: https://lore.kernel.org/all/20200622093744.13685-1-brgl@bgdev.pl/ Signed-off-by: Bartosz Golaszewski Reviewed-by: Konrad Dybcio Tested-by: Andrew Halaney Link: https://lore.kernel.org/r/20230810080909.6259-5-brgl@bgdev.pl Signed-off-by: Bjorn Andersson --- arch/arm64/boot/dts/qcom/sa8775p-ride.dts | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm64/boot/dts/qcom/sa8775p-ride.dts b/arch/arm64/boot/dts/qcom/sa8775p-ride.dts index 8eb133c8245f2..4571825104124 100644 --- a/arch/arm64/boot/dts/qcom/sa8775p-ride.dts +++ b/arch/arm64/boot/dts/qcom/sa8775p-ride.dts @@ -279,13 +279,13 @@ #address-cells = <1>; #size-cells = <0>; - reset-gpios = <&pmm8654au_2_gpios 8 GPIO_ACTIVE_LOW>; - reset-delay-us = <11000>; - reset-post-delay-us = <70000>; - sgmii_phy: phy@8 { + compatible = "ethernet-phy-id0141.0dd4"; reg = <0x8>; device_type = "ethernet-phy"; + reset-gpios = <&pmm8654au_2_gpios 8 GPIO_ACTIVE_LOW>; + reset-assert-us = <11000>; + reset-deassert-us = <70000>; }; }; -- 2.30.2