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ARM: dts: imx6qdl-dhcom: Align PHY reset timing with other DHCOM SoMs

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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 <cniedermaier@dh-electronics.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Fabio Estevam <festevam@denx.de>
Cc: Marek Vasut <marex@denx.de>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: kernel@dh-electronics.com
To: linux-arm-kernel@lists.infradead.org
Reviewed-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Christoph Niedermaier
2021-12-08 16:05:43 +01:00
committed by Shawn Guo
parent bca46d8e5f
commit e7ed6ba023
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
arch/arm/boot/dts/imx6qdl-dhcom-som.dtsi
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@@ -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 */
};