[PATCH v2 4/4] arm64: allwinner: a64: disable the RTL8211E internal RX delay on Pine64+

[Icenowy Zheng <icenowy-h8G6r0blFSE@public.gmane.org>]

Some Pine64+ boards have a broken RTL8211E PHY, which cannot work
reliably in 1000Base-T mode with default configuration.

A solution is passed to Pine64, which is said to be disabling the
internal RX delay of the PHY.

Enable the hack by set the PHY mode to RGMII-TXID.

Signed-off-by: Icenowy Zheng <icenowy-h8G6r0blFSE@public.gmane.org>
---
Changes in v2:
- It can be merged now as dwmac-sun8i entered mainline.
- Use phy-mode rgmii-txid instead of custom property.

 arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts
index 24f1aac366d6..ed715426fffc 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts
@@ -52,7 +52,7 @@
 &emac {
 	pinctrl-names = "default";
 	pinctrl-0 = <&rgmii_pins>;
-	phy-mode = "rgmii";
+	phy-mode = "rgmii-txid";
 	phy-handle = <&ext_rgmii_phy>;
 	status = "okay";
 };
-- 
2.13.5