From: Mathias Kresin <dev@kresin.me>
Date: Tue, 13 Mar 2018 19:06:37 +0000 (+0100)
Subject: ramips: mt7620n: add mdio node and disable port4 by default
X-Git-Tag: v18.06.0-rc1~650
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=d482356322c9910541a3118d049718b384a252bd;p=openwrt%2Fstaging%2Fxback.git

ramips: mt7620n: add mdio node and disable port4 by default

Revert the changes I applied to aa5014dd1a58 ("ramips: mt7620n: enable
port 4 as EPHY by default").

The driver expects a node mdio-bus to be present, regardless of the
actual node status. If the node is missing the driver fails to load  with

  mtk_soc_eth 10100000.ethernet: no mdio-bus child node found

Disable port4 by default again. If the port is enabled but not present, a
"invalid port id 4" warning is shown during boot.

Fixes: FS#1428

Signed-off-by: Mathias Kresin <dev@kresin.me>
---

diff --git a/target/linux/ramips/dts/mt7620n.dtsi b/target/linux/ramips/dts/mt7620n.dtsi
index 26c7d91e33..ebaa094600 100644
--- a/target/linux/ramips/dts/mt7620n.dtsi
+++ b/target/linux/ramips/dts/mt7620n.dtsi
@@ -293,11 +293,18 @@
 
 		mediatek,switch = <&gsw>;
 
+		mdio-bus {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			status = "disabled";
+		};
+
 		port@4 {
 			compatible = "mediatek,mt7620a-gsw-port", "mediatek,eth-port";
 			reg = <4>;
 
-			status = "okay";
+			status = "disabled";
 		};
 	};