[PATCH v3 08/15] ARM: dts: am335x: lxm: fix PCA9539 GPIO expander properties

[Krzysztof Kozlowski]

The PCA9539 GPIO expander requires GPIO controller properties to operate
properly.

Signed-off-by: Krzysztof Kozlowski <krzk at kernel.org>
Acked-by: Tony Lindgren <tony at atomide.com>
---
 arch/arm/boot/dts/am335x-lxm.dts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/am335x-lxm.dts b/arch/arm/boot/dts/am335x-lxm.dts
index cd55f11260ea..0f078465297a 100644
--- a/arch/arm/boot/dts/am335x-lxm.dts
+++ b/arch/arm/boot/dts/am335x-lxm.dts
@@ -160,11 +160,15 @@
 	serial_config1: serial_config1 at 20 {
 		compatible = "nxp,pca9539";
 		reg = <0x20>;
+		gpio-controller;
+		#gpio-cells = <2>;
 	};
 
 	serial_config2: serial_config2 at 21 {
 		compatible = "nxp,pca9539";
 		reg = <0x21>;
+		gpio-controller;
+		#gpio-cells = <2>;
 	};
 
 	tps: tps at 2d {
-- 
2.17.1