Commit 8b82b66e authored Apr 27, 2018 by Masahiro Yamada

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 <yamada.masahiro@socionext.com>

parent f4e5200f

arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts

+8 −0

Original line number	Diff line number	Diff line
		@@ -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>;
		};
		};