linux-kernel - [PATCH 9/9] arm64: dts: renesas: rzg3l-smarc-som: Enable eth1 (GBETH1) interface

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Message-ID: <20260129091108.95277-10-biju.das.jz@bp.renesas.com>
Date: Thu, 29 Jan 2026 09:11:00 +0000
From: Biju <biju.das.au@...il.com>
To: Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: Biju Das <biju.das.jz@...renesas.com>,
	linux-renesas-soc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>,
	Biju Das <biju.das.au@...il.com>
Subject: [PATCH 9/9] arm64: dts: renesas: rzg3l-smarc-som: Enable eth1 (GBETH1) interface

From: Biju Das <biju.das.jz@...renesas.com>

Enable the Gigabit Ethernet Interface (GBETH1) populated on the RZ/G3L
SMARC EVK. Also add pincontrol definitions for GBETH{0,1}.

Signed-off-by: Biju Das <biju.das.jz@...renesas.com>
---
 .../boot/dts/renesas/r9a08g046l48-smarc.dts   |  1 +
 .../boot/dts/renesas/rzg3l-smarc-som.dtsi     | 92 +++++++++++++++++++
 2 files changed, 93 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a08g046l48-smarc.dts b/arch/arm64/boot/dts/renesas/r9a08g046l48-smarc.dts
index 2f918830b8f1..58733016b66b 100644
--- a/arch/arm64/boot/dts/renesas/r9a08g046l48-smarc.dts
+++ b/arch/arm64/boot/dts/renesas/r9a08g046l48-smarc.dts
@@ -14,6 +14,7 @@
 
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
+#include <dt-bindings/pinctrl/renesas,r9a08g046-pinctrl.h>
 #include "r9a08g046l48.dtsi"
 #include "rzg3l-smarc-som.dtsi"
 #include "renesas-smarc2.dtsi"
diff --git a/arch/arm64/boot/dts/renesas/rzg3l-smarc-som.dtsi b/arch/arm64/boot/dts/renesas/rzg3l-smarc-som.dtsi
index f52af01a7eff..0b9bb073c282 100644
--- a/arch/arm64/boot/dts/renesas/rzg3l-smarc-som.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg3l-smarc-som.dtsi
@@ -10,6 +10,7 @@ / {
 
 	aliases {
 		ethernet0 = &eth0;
+		ethernet1 = &eth1;
 	};
 
 	memory@...00000 {
@@ -23,6 +24,8 @@ &eth0 {
 	phy-handle = <&phy0>;
 	phy-mode = "rgmii-id";
 
+	pinctrl-0 = <&eth0_pins>;
+	pinctrl-names = "default";
 	status = "okay";
 };
 
@@ -30,6 +33,19 @@ &eth0_rxc_rx_clk {
 	clock-frequency = <125000000>;
 };
 
+&eth1 {
+	phy-handle = <&phy1>;
+	phy-mode = "rgmii-id";
+
+	pinctrl-0 = <&eth1_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&eth1_rxc_rx_clk {
+	clock-frequency = <125000000>;
+};
+
 &extal_clk {
 	clock-frequency = <24000000>;
 };
@@ -53,3 +69,79 @@ phy0: ethernet-phy@7 {
 		txd3-skew-psec = <0>;
 	};
 };
+
+&mdio1 {
+	phy1: ethernet-phy@7 {
+		compatible = "ethernet-phy-id0022.1640",
+			     "ethernet-phy-ieee802.3-c22";
+		reg = <7>;
+		rxc-skew-psec = <1400>;
+		txc-skew-psec = <1400>;
+		rxdv-skew-psec = <0>;
+		txdv-skew-psec = <0>;
+		rxd0-skew-psec = <0>;
+		rxd1-skew-psec = <0>;
+		rxd2-skew-psec = <0>;
+		rxd3-skew-psec = <0>;
+		txd0-skew-psec = <0>;
+		txd1-skew-psec = <0>;
+		txd2-skew-psec = <0>;
+		txd3-skew-psec = <0>;
+	};
+};
+
+&pinctrl {
+	eth0_pins: eth0 {
+		txc {
+			pinmux = <RZG3L_PORT_PINMUX(B, 1, 1)>;  /* ETH0_TXC_REF_CLK */
+			power-source = <1800>;
+			output-enable;
+			drive-strength-microamp = <5200>;
+		};
+
+		ctrl {
+			pinmux = <RZG3L_PORT_PINMUX(A, 1, 1)>, /* MDC */
+				 <RZG3L_PORT_PINMUX(A, 0, 1)>, /* MDIO */
+				 <RZG3L_PORT_PINMUX(C, 2, 1)>, /* PHY_INTR */
+				 <RZG3L_PORT_PINMUX(C, 1, 1)>, /* RXD3 */
+				 <RZG3L_PORT_PINMUX(C, 0, 1)>, /* RXD2 */
+				 <RZG3L_PORT_PINMUX(B, 7, 1)>, /* RXD1 */
+				 <RZG3L_PORT_PINMUX(B, 6, 1)>, /* RXD0 */
+				 <RZG3L_PORT_PINMUX(B, 0, 1)>, /* RXC */
+				 <RZG3L_PORT_PINMUX(A, 2, 1)>, /* RX_CTL */
+				 <RZG3L_PORT_PINMUX(B, 5, 1)>, /* TXD3 */
+				 <RZG3L_PORT_PINMUX(B, 4, 1)>, /* TXD2 */
+				 <RZG3L_PORT_PINMUX(B, 3, 1)>, /* TXD1 */
+				 <RZG3L_PORT_PINMUX(B, 2, 1)>, /* TXD0 */
+				 <RZG3L_PORT_PINMUX(A, 3, 1)>; /* TX_CTL */
+				 power-source = <1800>;
+		};
+	};
+
+	eth1_pins: eth1 {
+		txc {
+			pinmux = <RZG3L_PORT_PINMUX(E, 1, 1)>;  /* ETH1_TXC_REF_CLK */
+			power-source = <1800>;
+			output-enable;
+			drive-strength-microamp = <5200>;
+		};
+
+		ctrl {
+			pinmux = <RZG3L_PORT_PINMUX(D, 1, 1)>, /* MDC */
+				 <RZG3L_PORT_PINMUX(D, 0, 1)>, /* MDIO */
+				 <RZG3L_PORT_PINMUX(F, 2, 1)>, /* PHY_INTR */
+				 <RZG3L_PORT_PINMUX(F, 1, 1)>, /* RXD3 */
+				 <RZG3L_PORT_PINMUX(F, 0, 1)>, /* RXD2 */
+				 <RZG3L_PORT_PINMUX(E, 7, 1)>, /* RXD1 */
+				 <RZG3L_PORT_PINMUX(E, 6, 1)>, /* RXD0 */
+				 <RZG3L_PORT_PINMUX(E, 0, 1)>, /* RXC */
+				 <RZG3L_PORT_PINMUX(D, 2, 1)>, /* RX_CTL */
+				 <RZG3L_PORT_PINMUX(E, 5, 1)>, /* TXD3 */
+				 <RZG3L_PORT_PINMUX(E, 4, 1)>, /* TXD2 */
+				 <RZG3L_PORT_PINMUX(E, 3, 1)>, /* TXD1 */
+				 <RZG3L_PORT_PINMUX(E, 2, 1)>, /* TXD0 */
+				 <RZG3L_PORT_PINMUX(D, 3, 1)>; /* TX_CTL */
+				 power-source = <1800>;
+		};
+	};
+};
-- 
2.43.0