From 4e66920563d718732b743ae418860cde13265242 Mon Sep 17 00:00:00 2001
From: John Madieu <john.madieu.xa@bp.renesas.com>
Date: Mon, 25 May 2026 11:06:01 +0000
Subject: [PATCH] arm64: dts: renesas: rzg3e-smarc-som: Add I2C1 support

Add and enable I2C1 controller support with pin configuration.
The I2C1 bus is routed to the carrier board and used for peripherals
such as the audio codec.

Signed-off-by: John Madieu <john.madieu.xa@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260525110603.4018170-7-john.madieu.xa@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 arch/arm64/boot/dts/renesas/rzg3e-smarc-som.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/rzg3e-smarc-som.dtsi b/arch/arm64/boot/dts/renesas/rzg3e-smarc-som.dtsi
index 2e1d9686df88..15c22dbf0ad3 100644
--- a/arch/arm64/boot/dts/renesas/rzg3e-smarc-som.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg3e-smarc-som.dtsi
@@ -32,6 +32,7 @@ / {
 	aliases {
 		ethernet0 = &eth0;
 		ethernet1 = &eth1;
+		i2c1 = &i2c1;
 		i2c2 = &i2c2;
 		mmc0 = &sdhi0;
 		mmc2 = &sdhi2;
@@ -112,6 +113,12 @@ &gpu {
 	mali-supply = <&reg_vdd0p8v_others>;
 };
 
+&i2c1 {
+	pinctrl-0 = <&i2c1_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
 &i2c2 {
 	pinctrl-0 = <&i2c2_pins>;
 	pinctrl-names = "default";
@@ -234,6 +241,11 @@ ctrl {
 		};
 	};
 
+	i2c1_pins: i2c1 {
+		pinmux = <RZG3E_PORT_PINMUX(3, 2, 1)>, /* SCL1 */
+			 <RZG3E_PORT_PINMUX(3, 3, 1)>; /* SDA1 */
+	};
+
 	i2c2_pins: i2c {
 		pinmux = <RZG3E_PORT_PINMUX(3, 4, 1)>, /* SCL2 */
 			 <RZG3E_PORT_PINMUX(3, 5, 1)>; /* SDA2 */