[PATCH 10/14] ARM: am437x: cm-t43: dts: add pca9555 support

[Nikita Kiryanov]

SB-SOM comes with a PCA9555 GPIO extender. On SBC-T43 this resides on the
i2c1 bus. Add it to the device tree.

Signed-off-by: Nikita Kiryanov <nikita at compulab.co.il>
Cc: Tony Lindgren <tony at atomide.com>
Cc: Igor Grinberg <grinberg at compulab.co.il>
Cc: Dmitry Lifshitz <lifshitz at compulab.co.il>
Cc: Ian Campbell <ijc+devicetree at hellion.org.uk>
---
 arch/arm/boot/dts/am437x-sbc-t43.dts | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm/boot/dts/am437x-sbc-t43.dts b/arch/arm/boot/dts/am437x-sbc-t43.dts
index 5d2919e..b2e3201 100644
--- a/arch/arm/boot/dts/am437x-sbc-t43.dts
+++ b/arch/arm/boot/dts/am437x-sbc-t43.dts
@@ -54,6 +54,13 @@
 	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c1_pins>;
+
+	pca9555: pca9555 at 20 {
+		compatible = "nxp,pca9555";
+		reg = <0x20>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
 };
 
 &i2c2 {
-- 
1.9.1