linux-kernel - [PATCH 08/13] arm64: dts: renesas: r9a09g077m44-rzt2h-evk: Enable I2C0 and I2C1 support

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Message-ID: <20250812200344.3253781-9-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Tue, 12 Aug 2025 21:03:39 +0100
From: Prabhakar <prabhakar.csengg@...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: linux-renesas-soc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Prabhakar <prabhakar.csengg@...il.com>,
	Biju Das <biju.das.jz@...renesas.com>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH 08/13] arm64: dts: renesas: r9a09g077m44-rzt2h-evk: Enable I2C0 and I2C1 support

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

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

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
 .../dts/renesas/r9a09g077m44-rzt2h-evk.dts    | 34 +++++++++++++++++++
 .../dts/renesas/rzt2h-n2h-evk-common.dtsi     |  2 ++
 2 files changed, 36 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts b/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts
index a0cf01978f15..36e3b630727a 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts
@@ -65,3 +65,37 @@ led8 {
 		};
 	};
 };
+
+&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 868abfdfd342..127e96395f8e 100644
--- a/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi
@@ -9,6 +9,8 @@
 
 / {
 	aliases {
+		i2c0 = &i2c0;
+		i2c1 = &i2c1;
 		serial0 = &sci0;
 	};
 
-- 
2.50.1