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 26c7d91e3307c3fa2846845818153ccaf0cb7e19..ebaa0946009eda1c3a0070755ca0c54c6d423391 100644 (file)
--- 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";
                };
        };