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

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Message-ID: <20250611080709.1182183-4-inochiama@gmail.com>
Date: Wed, 11 Jun 2025 16:07:08 +0800
From: Inochi Amaoto <inochiama@...il.com>
To: Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chen Wang <unicorn_wang@...look.com>,
	Inochi Amaoto <inochiama@...il.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Alexandre Ghiti <alex@...ti.fr>,
	Richard Cochran <richardcochran@...il.com>,
	Alexander Sverdlin <alexander.sverdlin@...il.com>,
	Yixun Lan <dlan@...too.org>,
	Thomas Bonnefille <thomas.bonnefille@...tlin.com>,
	Ze Huang <huangze@...t.edu.cn>
Cc: netdev@...r.kernel.org,
	devicetree@...r.kernel.org,
	sophgo@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	Longbin Li <looong.bin@...il.com>
Subject: [PATCH net-next RFC 3/3] riscv: dts: sophgo: Add mdio multiplexer device for cv18xx

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

Signed-off-by: Inochi Amaoto <inochiama@...il.com>
---
 arch/riscv/boot/dts/sophgo/cv180x.dtsi | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/arch/riscv/boot/dts/sophgo/cv180x.dtsi b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
index 7eecc67f896e..929864ba1b26 100644
--- a/arch/riscv/boot/dts/sophgo/cv180x.dtsi
+++ b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
@@ -31,6 +31,32 @@ rst: reset-controller@...3000 {
 			#reset-cells = <1>;
 		};
 
+		mdio: mdio@...9000 {
+			compatible = "sophgo,cv1800b-mdio-mux";
+			reg = <0x3009000 0x1000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			mdio-parent-bus = <&gmac0_mdio>;
+			status = "disabled";
+
+			external_mdio: mdio@0 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <0>;
+			};
+
+			internal_mdio: mdio@1 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				reg = <1>;
+
+				internal_ephy: phy@0 {
+					compatible = "ethernet-phy-ieee802.3-c22";
+					reg = <0>;
+				};
+			};
+		};
+
 		gpio0: gpio@...0000 {
 			compatible = "snps,dw-apb-gpio";
 			reg = <0x3020000 0x1000>;
-- 
2.49.0