[openwrt/openwrt] realtek: dts: add mdio bus 1-3 to RTL93xx

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/cfe534dc8ef1d99cdfafb7ac09ea2aabb2570d6b

commit cfe534dc8ef1d99cdfafb7ac09ea2aabb2570d6b
Author: Markus Stockhausen <markus.stockhausen at gmx.de>
AuthorDate: Wed Jan 7 10:42:48 2026 +0100

    realtek: dts: add mdio bus 1-3 to RTL93xx
    
    RTL93xx devices have 4 smi busses (0-3). Add them to the dts.
    
    Signed-off-by: Markus Stockhausen <markus.stockhausen at gmx.de>
    Link: https://github.com/openwrt/openwrt/pull/21438
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
 target/linux/realtek/dts/rtl930x.dtsi | 15 +++++++++++++++
 target/linux/realtek/dts/rtl931x.dtsi | 15 +++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/target/linux/realtek/dts/rtl930x.dtsi b/target/linux/realtek/dts/rtl930x.dtsi
index e8e61c287f..913101d3d0 100644
--- a/target/linux/realtek/dts/rtl930x.dtsi
+++ b/target/linux/realtek/dts/rtl930x.dtsi
@@ -211,6 +211,21 @@
 				#address-cells = <1>;
 				#size-cells = <0>;
 			};
+			mdio_bus1: mdio-bus at 1 {
+				reg = <1>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+			mdio_bus2: mdio-bus at 2 {
+				reg = <2>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+			mdio_bus3: mdio-bus at 3 {
+				reg = <3>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
 		};
 
 		mdio_aux: mdio-aux {
diff --git a/target/linux/realtek/dts/rtl931x.dtsi b/target/linux/realtek/dts/rtl931x.dtsi
index eba623fc9b..42876ee1db 100644
--- a/target/linux/realtek/dts/rtl931x.dtsi
+++ b/target/linux/realtek/dts/rtl931x.dtsi
@@ -246,6 +246,21 @@
 				#address-cells = <1>;
 				#size-cells = <0>;
 			};
+			mdio_bus1: mdio-bus at 1 {
+				reg = <1>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+			mdio_bus2: mdio-bus at 2 {
+				reg = <2>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+			mdio_bus3: mdio-bus at 3 {
+				reg = <3>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
 		};
 
 		mdio_aux: mdio-aux {