arm64: dts: ulcb-kf: enable TCA9539 on I2C2

This supports TCA9539 gpio expanders on I2C2 bus on ULCB Kingfisher board

Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
index 27657fe..80444ae 100644 (file)
--- a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
+++ b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
@@ -44,6 +44,28 @@
        status = "okay";
 };
 
+&i2c2 {
+       gpio_exp_74: gpio@74 {
+               compatible = "ti,tca9539";
+               reg = <0x74>;
+               gpio-controller;
+               #gpio-cells = <2>;
+               interrupt-controller;
+               interrupt-parent = <&gpio6>;
+               interrupts = <8 IRQ_TYPE_EDGE_FALLING>;
+       };
+
+       gpio_exp_75: gpio@75 {
+               compatible = "ti,tca9539";
+               reg = <0x75>;
+               gpio-controller;
+               #gpio-cells = <2>;
+               interrupt-controller;
+               interrupt-parent = <&gpio6>;
+               interrupts = <4 IRQ_TYPE_EDGE_FALLING>;
+       };
+};
+
 &ohci0 {
        status = "okay";
 };