[PATCH] arm64: dts: renesas: rzg3s-smarc: Enable I2C1 and connected power monitor

[Wolfram Sang <wsa+renesas@sang-engineering.com>]

Enable I2C1 for the carrier board and the connected power monitor
ISL28022. Limit the bus speed to the maximum the power monitor supports.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---

i2c1 gets enabled in the current SoM-DTSI as well, but to be safe
regarding other SoM DTSIs to come, I opted for explicitly enabling it in
the carrier board as well.

I picked the 'average-samples' value using my gut feeling. If someone
has a reason to pick a better one, I am all for it.

 arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi b/arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi
index 7945d44e6ee1..5e4bfaeafd20 100644
--- a/arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi
@@ -73,6 +73,19 @@ &i2c0 {
 	clock-frequency = <1000000>;
 };
 
+&i2c1 {
+	status = "okay";
+
+	clock-frequency = <400000>;
+
+	power-monitor@44 {
+		compatible = "renesas,isl28022";
+		reg = <0x44>;
+		shunt-resistor-micro-ohms = <8000>;
+		renesas,average-samples = <32>;
+	};
+};
+
 &pinctrl {
 	key-1-gpio-hog {
 		gpio-hog;
-- 
2.45.2