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charset="utf-8" Since mac0/1 and mac2/3 are physically located on different die, they have different properties by nature, which is mac0/1 has smaller delay= step. The property 'phy-mode' on ast2600 mac0 and mac1 is recommended to set to '= rgmii-rxid' which enables the RX interface delay from the PHY chip. Refer page 45 of SDK User Guide v08.00 https://github.com/AspeedTech-BMC/openbmc/releases/download/v08.00/SDK_User= _Guide_v08.00.pdf Signed-off-by: Howard Chiu --- Change since v1: 1. Remove mac*-clk-delay due to lack of driver support arch/arm/boot/dts/aspeed-ast2600-evb.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/aspeed-ast2600-evb.dts b/arch/arm/boot/dts/a= speed-ast2600-evb.dts index b7eb552640cb..788448cdd6b3 100644 --- a/arch/arm/boot/dts/aspeed-ast2600-evb.dts +++ b/arch/arm/boot/dts/aspeed-ast2600-evb.dts @@ -103,7 +103,7 @@ ethphy3: ethernet-phy@0 { &mac0 { status =3D "okay"; =20 - phy-mode =3D "rgmii"; + phy-mode =3D "rgmii-rxid"; phy-handle =3D <ðphy0>; =20 pinctrl-names =3D "default"; @@ -114,7 +114,7 @@ &mac0 { &mac1 { status =3D "okay"; =20 - phy-mode =3D "rgmii"; + phy-mode =3D "rgmii-rxid"; phy-handle =3D <ðphy1>; =20 pinctrl-names =3D "default"; --=20 2.25.1