[PATCH net-next RFC v4 3/4] riscv: dts: sophgo: Add mdio multiplexer device for cv18xx

Inochi Amaoto
2025-07-01T01:17:59Z

Add DT device node of mdio multiplexer device for cv18xx SoC.

Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
---
arch/riscv/boot/dts/sophgo/cv180x.dtsi | 29 ++++++++++++++++++++++++++
1 file changed, 29 insertions(+)

diff --git a/arch/riscv/boot/dts/sophgo/cv180x.dtsi b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
index 7eecc67f896e..3a82cc40ea1a 100644
--- a/arch/riscv/boot/dts/sophgo/cv180x.dtsi
+++ b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
@@ -31,6 +31,33 @@ rst: reset-controller@3003000 {
#reset-cells = <1>;
};

+ mdio: mdio@3009800 {
+ compatible = "mdio-mux-mmioreg", "mdio-mux";
+ reg = <0x3009800 0x4>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ mdio-parent-bus = <&gmac0_mdio>;
+ mux-mask = <0x80>;
+ status = "disabled";
+
+ internal_mdio: mdio@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+
+ internal_ephy: phy@0 {
+ compatible = "ethernet-phy-ieee802.3-c22";
+ reg = <1>;
+ };
+ };
+
+ external_mdio: mdio@80 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x80>;
+ };
+ };
+
gpio0: gpio@3020000 {
compatible = "snps,dw-apb-gpio";
reg = <0x3020000 0x1000>;
@@ -196,6 +223,8 @@ gmac0: ethernet@4070000 {
clock-names = "stmmaceth", "ptp_ref";
interrupts = <SOC_PERIPHERAL_IRQ(15) IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "macirq";
+ phy-handle = <&internal_ephy>;
+ phy-mode = "internal";
resets = <&rst RST_ETH0>;
reset-names = "stmmaceth";
rx-fifo-depth = <8192>;
--
2.50.0