[PATCH] arm64: dts: renesas: sparrow-hawk: Always enable edge connector I2C busses

From: Marek Vasut

Date: Sun Jul 05 2026 - 08:53:53 EST


The interfaces on the edge connector of Retronix R-Car V4H Sparrow Hawk
board may be controlled from userspace using matching userspace tooling
that includes e.g. i2c-tools. Enable the edge connector I2C busses I2C3
and I2C4 to allow userspace applications to use those busses and access
peripherals attached to those busses.

Co-developed-by: Yuya Hamamachi <yuya.hamamachi.sx@xxxxxxxxxxx>
Signed-off-by: Yuya Hamamachi <yuya.hamamachi.sx@xxxxxxxxxxx>
Signed-off-by: Marek Vasut <marek.vasut+renesas@xxxxxxxxxxx>
---
Cc: Conor Dooley <conor+dt@xxxxxxxxxx>
Cc: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Cc: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
Cc: Rob Herring <robh@xxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: linux-renesas-soc@xxxxxxxxxxxxxxx
---
.../boot/dts/renesas/r8a779g3-sparrow-hawk-fan-argon40.dtso | 1 -
arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts | 2 ++
2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-fan-argon40.dtso b/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-fan-argon40.dtso
index c730ef39c7d7d..6f10310140b9b 100644
--- a/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-fan-argon40.dtso
+++ b/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-fan-argon40.dtso
@@ -41,7 +41,6 @@ &i2c3 {
#address-cells = <1>;
#size-cells = <0>;
clock-frequency = <400000>;
- status = "okay";

pwmhat: pwm@1a {
compatible = "argon40,fan-hat";
diff --git a/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts b/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts
index af680290ce817..a6294fd32daee 100644
--- a/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts
+++ b/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts
@@ -498,6 +498,7 @@ &i2c3 {
#size-cells = <0>;
pinctrl-0 = <&i2c3_pins>;
pinctrl-names = "default";
+ status = "okay";
};

/* Page 31 / IO_CN */
@@ -506,6 +507,7 @@ &i2c4 {
#size-cells = <0>;
pinctrl-0 = <&i2c4_pins>;
pinctrl-names = "default";
+ status = "okay";
};

/* Page 18 / POWER_CORE and Page 19 / POWER_PMIC */
--
2.53.0