From e7ed6ba0239df1e2aca3f9b2d77da4de180cdbe0 Mon Sep 17 00:00:00 2001 From: Christoph Niedermaier Date: Wed, 8 Dec 2021 16:05:43 +0100 Subject: [PATCH] ARM: dts: imx6qdl-dhcom: Align PHY reset timing with other DHCOM SoMs According to datasheet Microchip LAN8710A/LAN8710Ai DS00002164B [1] the reset should stay asserted for at least 100uS and software should wait at least 200nS. On other DHCOM SoMs with the SMSC LAN8710Ai PHY both reset delays are 500us. This should be plenty and for consistency, the i.MX6 SoM should also use these delays. [1] https://ww1.microchip.com/downloads/en/DeviceDoc/00002164B.pdf Signed-off-by: Christoph Niedermaier Cc: Shawn Guo Cc: Fabio Estevam Cc: Marek Vasut Cc: NXP Linux Team Cc: kernel@dh-electronics.com To: linux-arm-kernel@lists.infradead.org Reviewed-by: Fabio Estevam Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx6qdl-dhcom-som.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/imx6qdl-dhcom-som.dtsi b/arch/arm/boot/dts/imx6qdl-dhcom-som.dtsi index 5d10c40313cbd..e716870611610 100644 --- a/arch/arm/boot/dts/imx6qdl-dhcom-som.dtsi +++ b/arch/arm/boot/dts/imx6qdl-dhcom-som.dtsi @@ -138,8 +138,8 @@ pinctrl-0 = <&pinctrl_ethphy0>; pinctrl-names = "default"; reg = <0>; - reset-assert-us = <1000>; - reset-deassert-us = <1000>; + reset-assert-us = <500>; + reset-deassert-us = <500>; reset-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>; smsc,disable-energy-detect; /* Make plugin detection reliable */ }; -- 2.30.2