From 6f21672c42fc432d69d8fd51e5d8cea145d5be5b Mon Sep 17 00:00:00 2001
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Tue, 12 Aug 2025 21:03:39 +0100
Subject: [PATCH] arm64: dts: renesas: r9a09g077m44-rzt2h-evk: Enable I2C0 and
 I2C1 support

Enable I2C0 and I2C1 on the RZ/T2H evaluation board.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/20250812200344.3253781-9-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 .../dts/renesas/r9a09g077m44-rzt2h-evk.dts    | 36 +++++++++++++++++++
 .../dts/renesas/rzt2h-n2h-evk-common.dtsi     |  2 ++
 2 files changed, 38 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts b/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts
index 486584fefeadf..51ea295b32410 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts
@@ -7,6 +7,8 @@
 
 /dts-v1/;
 
+#include <dt-bindings/pinctrl/renesas,r9a09g077-pinctrl.h>
+
 #include "r9a09g077m44.dtsi"
 #include "rzt2h-n2h-evk-common.dtsi"
 
@@ -14,3 +16,37 @@
 	model = "Renesas RZ/T2H EVK Board based on r9a09g077m44";
 	compatible = "renesas,rzt2h-evk", "renesas,r9a09g077m44", "renesas,r9a09g077";
 };
+
+&i2c0 {
+	pinctrl-0 = <&i2c0_pins>;
+	pinctrl-names = "default";
+	clock-frequency = <400000>;
+	status = "okay";
+};
+
+&i2c1 {
+	pinctrl-0 = <&i2c1_pins>;
+	pinctrl-names = "default";
+	clock-frequency = <400000>;
+	status = "okay";
+};
+
+&pinctrl {
+	/*
+	 * I2C0 Pin Configuration:
+	 * ------------------------
+	 * Signal | Pin     | SW6
+	 * -------|---------|--------------
+	 * SCL    | P23_3   | 7: ON, 8: OFF
+	 * SDA    | P23_4   | 9: ON, 10: OFF
+	 */
+	i2c0_pins: i2c0-pins {
+		pinmux = <RZT2H_PORT_PINMUX(23, 3, 0x17)>,
+			 <RZT2H_PORT_PINMUX(23, 4, 0x17)>;
+	};
+
+	i2c1_pins: i2c1-pins {
+		pinmux = <RZT2H_PORT_PINMUX(5, 0, 0x17)>, /* SDA */
+			 <RZT2H_PORT_PINMUX(4, 7, 0x17)>; /* SCL */
+	};
+};
diff --git a/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi b/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
index 5f17996bcd6bc..263509cc3dc4c 100644
--- a/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
@@ -7,6 +7,8 @@
 
 / {
 	aliases {
+		i2c0 = &i2c0;
+		i2c1 = &i2c1;
 		serial0 = &sci0;
 	};
 
-- 
2.47.3