From: Jernej Skrabec Date: Mon, 9 Sep 2019 18:42:35 +0000 (+0200) Subject: arm64: dts: allwinner: a64: pine64-plus: Add PHY regulator delay X-Git-Tag: v5.4-rc5~22^2~4^2~5 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=2511366797fa6ab4a404b4b000ef7cd262aaafe8;p=linux-block.git arm64: dts: allwinner: a64: pine64-plus: Add PHY regulator delay Depending on kernel and bootloader configuration, it's possible that Realtek ethernet PHY isn't powered on properly. According to the datasheet, it needs 30ms to power up and then some more time before it can be used. Fix that by adding 100ms ramp delay to regulator responsible for powering PHY. Fixes: 94dcfdc77fc5 ("arm64: allwinner: pine64-plus: Enable dwmac-sun8i") Suggested-by: Ondrej Jirman Signed-off-by: Jernej Skrabec Signed-off-by: Maxime Ripard --- diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts index 24f1aac366d6..d5b6e8159a33 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts @@ -63,3 +63,12 @@ reg = <1>; }; }; + +®_dc1sw { + /* + * Ethernet PHY needs 30ms to properly power up and some more + * to initialize. 100ms should be plenty of time to finish + * whole process. + */ + regulator-enable-ramp-delay = <100000>; +};