[PATCH 4/4] arm64: dts: renesas: rzg3e-smarc-som: Enable I3C

Wolfram Sang
2025-08-07T15:14:59Z

Enable I3C on the dedicated connector of the RZ/G3E module. Provide
safe defaults allowing to connect even to slow I2C devices.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
arch/arm64/boot/dts/renesas/rzg3e-smarc-som.dtsi | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/rzg3e-smarc-som.dtsi b/arch/arm64/boot/dts/renesas/rzg3e-smarc-som.dtsi
index 7faa44510d98..0c3156129aae 100644
--- a/arch/arm64/boot/dts/renesas/rzg3e-smarc-som.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg3e-smarc-som.dtsi
@@ -5,6 +5,8 @@
* Copyright (C) 2024 Renesas Electronics Corp.
*/

+#include <dt-bindings/i3c/i3c.h>
+
/*
* Please set the below switch position on the SoM and the corresponding macro
* on the board DTS:
@@ -122,6 +124,12 @@ raa215300: pmic@12 {
};
};

+&i3c {
+ i2c-scl-hz = <100000>;
+ i3c-scl-hz = <12500000>;
+ status = "okay";
+};
+
&mdio0 {
phy0: ethernet-phy@7 {
compatible = "ethernet-phy-id0022.1640",
--
2.47.2