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

Enable the RIIC controllers 0, 1, 2, 3, 6, 7, and 8 which are populated
on the RZ/V2N EVK.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
 .../dts/renesas/r9a09g056n48-rzv2n-evk.dts    | 95 +++++++++++++++++++
 1 file changed, 95 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a09g056n48-rzv2n-evk.dts b/arch/arm64/boot/dts/renesas/r9a09g056n48-rzv2n-evk.dts
index 518426dd624c..12de1c21fef5 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g056n48-rzv2n-evk.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g056n48-rzv2n-evk.dts
@@ -17,6 +17,13 @@ / {
 	aliases {
 		ethernet0 = &eth0;
 		ethernet1 = &eth1;
+		i2c0 = &i2c0;
+		i2c1 = &i2c1;
+		i2c2 = &i2c2;
+		i2c3 = &i2c3;
+		i2c6 = &i2c6;
+		i2c7 = &i2c7;
+		i2c8 = &i2c8;
 		mmc1 = &sdhi1;
 		serial0 = &scif;
 	};
@@ -72,6 +79,55 @@ &eth1 {
 	status = "okay";
 };
 
+&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";
+};
+
+&i2c2 {
+	pinctrl-0 = <&i2c2_pins>;
+	pinctrl-names = "default";
+	clock-frequency = <400000>;
+	status = "okay";
+};
+
+&i2c3 {
+	pinctrl-0 = <&i2c3_pins>;
+	pinctrl-names = "default";
+	clock-frequency = <400000>;
+	status = "okay";
+};
+
+&i2c6 {
+	pinctrl-0 = <&i2c6_pins>;
+	pinctrl-names = "default";
+	clock-frequency = <400000>;
+	status = "okay";
+};
+
+&i2c7 {
+	pinctrl-0 = <&i2c7_pins>;
+	pinctrl-names = "default";
+	clock-frequency = <400000>;
+	status = "okay";
+};
+
+&i2c8 {
+	pinctrl-0 = <&i2c8_pins>;
+	pinctrl-names = "default";
+	clock-frequency = <400000>;
+	status = "okay";
+};
+
 &mdio0 {
 	phy0: ethernet-phy@0 {
 		compatible = "ethernet-phy-id0022.1640", "ethernet-phy-ieee802.3-c22";
@@ -153,6 +209,45 @@ eth1_pins: eth0 {
 		output-enable;
 	};
 
+	i2c0_pins: i2c0 {
+		pinmux = <RZV2N_PORT_PINMUX(3, 0, 1)>, /* I2C0_SDA */
+			 <RZV2N_PORT_PINMUX(3, 1, 1)>; /* I2C0_SCL */
+	};
+
+	i2c1_pins: i2c1 {
+		pinmux = <RZV2N_PORT_PINMUX(3, 2, 1)>, /* I2C1_SDA */
+			 <RZV2N_PORT_PINMUX(3, 3, 1)>; /* I2C1_SCL */
+	};
+
+	i2c2_pins: i2c2 {
+		pinmux = <RZV2N_PORT_PINMUX(2, 0, 4)>, /* I2C2_SDA */
+			 <RZV2N_PORT_PINMUX(2, 1, 4)>; /* I2C2_SCL */
+	};
+
+	i2c3_pins: i2c3 {
+		pinmux = <RZV2N_PORT_PINMUX(3, 6, 1)>, /* I2C3_SDA */
+			 <RZV2N_PORT_PINMUX(3, 7, 1)>; /* I2C3_SCL */
+	};
+
+	i2c6_pins: i2c6 {
+		pinmux = <RZV2N_PORT_PINMUX(4, 4, 1)>, /* I2C6_SDA */
+			 <RZV2N_PORT_PINMUX(4, 5, 1)>; /* I2C6_SCL */
+		/* There are no pull-up resistors on the EVK, so enable the internal pull-up */
+		bias-pull-up;
+	};
+
+	i2c7_pins: i2c7 {
+		pinmux = <RZV2N_PORT_PINMUX(4, 6, 1)>, /* I2C7_SDA */
+			 <RZV2N_PORT_PINMUX(4, 7, 1)>; /* I2C7_SCL */
+		/* There are no pull-up resistors on the EVK, so enable the internal pull-up */
+		bias-pull-up;
+	};
+
+	i2c8_pins: i2c8 {
+		pinmux = <RZV2N_PORT_PINMUX(0, 6, 1)>, /* I2C8_SDA */
+			 <RZV2N_PORT_PINMUX(0, 7, 1)>; /* I2C8_SCL */
+	};
+
 	scif_pins: scif {
 		pins = "SCIF_TXD", "SCIF_RXD";
 		renesas,output-impedance = <1>;
-- 
2.49.0

On Wed, 14 May 2025 at 12:15, Prabhakar <prabhakar.csengg@gmail.com> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>
> Enable the RIIC controllers 0, 1, 2, 3, 6, 7, and 8 which are populated
> on the RZ/V2N EVK.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v6.17.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds