[openwrt/openwrt] sunxi: 5.10: Orange Pi Zero Plus: Fix networking

[LEDE Commits]

dangole pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/ebb6f9287e33c3760b076efa6dcc1cce90e1a109

commit ebb6f9287e33c3760b076efa6dcc1cce90e1a109
Author: Robert Marko <robert.marko at sartura.hr>
AuthorDate: Wed Nov 17 16:17:07 2021 +0100

    sunxi: 5.10: Orange Pi Zero Plus: Fix networking
    
    Orange Pi Zero Plus uses a Realtek RTL8211E RGMII Gigabit PHY, but its
    currently set to plain RGMII mode meaning that it doesn't introduce
    delays.
    
    With this setup, TX packets are completely lost and changing the mode to
    RGMII-ID so the PHY will add delays internally fixes the issue.
    
    It looks like this got broken in 5.10 as the PHY RGMII config got fixed
    due to datasheet being available and a lot of boards got broken by that.
    
    This has already been sent upstream and received multiple reviews.
    
    Signed-off-by: Robert Marko <robert.marko at sartura.hr>
---
 ...s-allwinner-orangepi-zero-plus-fix-PHY-mo.patch | 32 ++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/target/linux/sunxi/patches-5.10/103-arm64-dts-allwinner-orangepi-zero-plus-fix-PHY-mo.patch b/target/linux/sunxi/patches-5.10/103-arm64-dts-allwinner-orangepi-zero-plus-fix-PHY-mo.patch
new file mode 100644
index 0000000000..e3a00348b0
--- /dev/null
+++ b/target/linux/sunxi/patches-5.10/103-arm64-dts-allwinner-orangepi-zero-plus-fix-PHY-mo.patch
@@ -0,0 +1,32 @@
+From 4f45f9f370a5bc6a43a7a166f10b3a30ca21353c Mon Sep 17 00:00:00 2001
+From: Robert Marko <robert.marko at sartura.hr>
+Date: Wed, 17 Nov 2021 10:36:31 +0100
+Subject: [PATCH v2] arm64: dts: allwinner: orangepi-zero-plus: fix PHY mode
+
+Orange Pi Zero Plus uses a Realtek RTL8211E RGMII Gigabit PHY, but its
+currently set to plain RGMII mode meaning that it doesn't introduce
+delays.
+
+With this setup, TX packets are completely lost and changing the mode to
+RGMII-ID so the PHY will add delays internally fixes the issue.
+
+Fixes: a7affb13b271 ("arm64: allwinner: H5: Add Xunlong Orange Pi Zero Plus")
+
+Tested-by: Ron Goossens <rgoossens at gmail.com>
+Signed-off-by: Robert Marko <robert.marko at sartura.hr>
+Tested-by: Samuel Holland <samuel at sholland.org>
+---
+ arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus.dts | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus.dts
++++ b/arch/arm64/boot/dts/allwinner/sun50i-h5-orangepi-zero-plus.dts
+@@ -69,7 +69,7 @@
+ 	pinctrl-0 = <&emac_rgmii_pins>;
+ 	phy-supply = <&reg_gmac_3v3>;
+ 	phy-handle = <&ext_rgmii_phy>;
+-	phy-mode = "rgmii";
++	phy-mode = "rgmii-id";
+ 	status = "okay";
+ };
+