[PATCH 2/3] riscv: dts: sophgo: Add mdio multiplexer device for cv18xx

From: Inochi Amaoto <inochiama@gmail.com>
To: Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Alexandre Ghiti <alex@ghiti.fr>,
	Chen Wang <unicorn_wang@outlook.com>,
	Inochi Amaoto <inochiama@gmail.com>,
	Richard Cochran <richardcochran@gmail.com>,
	Alexander Sverdlin <alexander.sverdlin@gmail.com>,
	Yixun Lan <dlan@gentoo.org>, Ze Huang <huangze@whut.edu.cn>,
	Thomas Bonnefille <thomas.bonnefille@bootlin.com>
Cc: devicetree@vger.kernel.org, linux-riscv@lists.infradead.org,
	sophgo@lists.linux.dev, linux-kernel@vger.kernel.org,
	netdev@vger.kernel.org, Longbin Li <looong.bin@gmail.com>
Subject: [PATCH 2/3] riscv: dts: sophgo: Add mdio multiplexer device for cv18xx
Date: Thu,  3 Jul 2025 10:15:57 +0800	[thread overview]
Message-ID: <20250703021600.125550-3-inochiama@gmail.com> (raw)
In-Reply-To: <20250703021600.125550-1-inochiama@gmail.com>

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


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