[PATCH v3 6/6] arm64: dts: uniphier: Stabilize Ethernet RGMII mode of PXs3 ref board
From: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Date: 2020-03-23 09:33:14
Also in:
linux-devicetree
Subsystem:
arm/uniphier architecture, the rest · Maintainers:
Kunihiko Hayashi, Masami Hiramatsu, Linus Torvalds
The RGMII PHY needs to change drive-strength properties of the Ethernet Tx pins to stabilize the PHY. Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> --- arch/arm64/boot/dts/socionext/uniphier-pxs3-ref.dts | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/arch/arm64/boot/dts/socionext/uniphier-pxs3-ref.dts b/arch/arm64/boot/dts/socionext/uniphier-pxs3-ref.dts
index fcab6d1..d74a6c6 100644
--- a/arch/arm64/boot/dts/socionext/uniphier-pxs3-ref.dts
+++ b/arch/arm64/boot/dts/socionext/uniphier-pxs3-ref.dts@@ -132,3 +132,19 @@ reg = <0>; }; }; + +&pinctrl_ether_rgmii { + tx { + pins = "RGMII0_TXCLK", "RGMII0_TXD0", "RGMII0_TXD1", + "RGMII0_TXD2", "RGMII0_TXD3", "RGMII0_TXCTL"; + drive-strength = <9>; + }; +}; + +&pinctrl_ether1_rgmii { + tx { + pins = "RGMII1_TXCLK", "RGMII1_TXD0", "RGMII1_TXD1", + "RGMII1_TXD2", "RGMII1_TXD3", "RGMII1_TXCTL"; + drive-strength = <9>; + }; +};
--
2.7.4
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