arm64: dts: renesas: r8a77990: ebisu: Fix EthernetAVB phy mode to rgmii

This change “arm64: dts: renesas: r8a77990: ebisu: Fix EthernetAVB phy mode to rgmii” in Linux kernel is authored by Kazuya Mizuguchi <kazuya.mizuguchi.ks [at] renesas.com> on Fri Dec 14 16:58:44 2018 +0100.

arm64: dts: renesas: r8a77990: ebisu: Fix EthernetAVB phy mode to rgmii

According to the R-Car Gen3 Hardware Manual Errata for Rev 1.00 of
August 24, 2018, the TX clock internal delay mode doesn't support
on R-Car E3. This patch fixes EthernetAVB phy mode to rgmii.

This is achieved by simply dropping the phy-mode property from
r8a77990-ebisu.dts as the default property for this for r8a77990,
as set in r8a77990.dtsi, is "rgmii".

Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Ulrich Hecht <uli+renesas@fpond.eu>

This Linux change may have been applied to various maintained Linux releases and you can find Linux releases including commit 7eda14a.

There is one line of Linux source code added/deleted in this change. Code changes to Linux kernel are as follows.

 arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts b/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts
index 24beb0e..8b66ee8 100644
--- a/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts
+++ b/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts
@@ -267,7 +267,6 @@
 	pinctrl-names = "default";
 	renesas,no-ether-link;
 	phy-handle = <&phy0>;
-	phy-mode = "rgmii-txid";
 	status = "okay";
 
 	phy0: ethernet-phy@0 {

The commit for this change in Linux stable tree is 7eda14a (patch).

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