arm64: dts: ulcb-kf: enable TCA9539 on I2C4

This supports TCA9539 gpio expanders on I2C4 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 80444ae..a6c2343 100644 (file)
--- a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
+++ b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
@@ -66,6 +66,28 @@
        };
 };
 
+&i2c4 {
+       gpio_exp_76: gpio@76 {
+               compatible = "ti,tca9539";
+               reg = <0x76>;
+               gpio-controller;
+               #gpio-cells = <2>;
+               interrupt-controller;
+               interrupt-parent = <&gpio7>;
+               interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
+       };
+
+       gpio_exp_77: gpio@77 {
+               compatible = "ti,tca9539";
+               reg = <0x77>;
+               gpio-controller;
+               #gpio-cells = <2>;
+               interrupt-controller;
+               interrupt-parent = <&gpio5>;
+               interrupts = <9 IRQ_TYPE_EDGE_FALLING>;
+       };
+};
+
 &ohci0 {
        status = "okay";
 };