[PATCH 1/3] arm64: dts: rockchip: add basic mdio node to px30

[Quentin Schulz]

From: Heiko Stuebner <heiko.stuebner at cherry.de>

Using snps,reset-* properties for handling the phy-reset is deprecated
and instead a real phy node should be defined that then contains the
reset-gpios handling.

To facilitate this, add the core mdio node under the px30's gmac, similar
to how the other Rockchip socs already do this.

Signed-off-by: Heiko Stuebner <heiko.stuebner at cherry.de>
Reviewed-by: Quentin Schulz <quentin.schulz at cherry.de>
Link: https://lore.kernel.org/r/20250514150745.2437804-2-heiko@sntech.de
Signed-off-by: Heiko Stuebner <heiko at sntech.de>

[ upstream commit: ede4837a504ca7e5811217060aa8300b8d0cf7f2 ]

(cherry picked from commit cb54a264ecdb9e95b1529e4542e157cb9acded30)
---
 dts/upstream/src/arm64/rockchip/px30.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/dts/upstream/src/arm64/rockchip/px30.dtsi b/dts/upstream/src/arm64/rockchip/px30.dtsi
index 9137dd76e72cedb0cfbf1995032e5852cab80f96..feabdadfa440f96c0134a0bb05e64a0c7b5adf2e 100644
--- a/dts/upstream/src/arm64/rockchip/px30.dtsi
+++ b/dts/upstream/src/arm64/rockchip/px30.dtsi
@@ -985,6 +985,12 @@
 		resets = <&cru SRST_GMAC_A>;
 		reset-names = "stmmaceth";
 		status = "disabled";
+
+		mdio: mdio {
+			compatible = "snps,dwmac-mdio";
+			#address-cells = <1>;
+			#size-cells = <0>;
+		};
 	};
 
 	sdmmc: mmc at ff370000 {

-- 
2.49.0