From 8b82b66e68b32dd8e22a04db6a0494bfdd65156f Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Fri, 27 Apr 2018 13:25:18 +0900 Subject: arm64: dts: uniphier: stabilize ethernet of LD20 reference board Currently, the ethernet RGMII mode on the LD20 reference board is unstable. The default drive-strength of ethernet TX pins is too strong because there is no dumping resistor on the TX lines on the board. Weaken the drive-strength to make the ethernet more stable. Signed-off-by: Masahiro Yamada --- arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts') diff --git a/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts b/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts index 2c1a92fafbfb..440c2e6a638b 100644 --- a/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts +++ b/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts @@ -67,3 +67,11 @@ reg = <0>; }; }; + +&pinctrl_ether_rgmii { + tx { + pins = "RGMII_TXCLK", "RGMII_TXD0", "RGMII_TXD1", + "RGMII_TXD2", "RGMII_TXD3", "RGMII_TXCTL"; + drive-strength = <9>; + }; +}; -- cgit v1.2.3