[PATCH 2/2] ARM: dts: am335x-icev2: Add nodes for gpio-decoder

[Vignesh R]

AM335x ICE board has a rotary-switch connected to PCA9536 I2C GPIO
expander. The position of the rotary-switch is reflected by status of
GPIO lines. Add gpio-decoder node to read these GPIO line status via
gpio-decoder driver and report it as an input event to the system.

Signed-off-by: Vignesh R <vigne...@ti.com>
---
 arch/arm/boot/dts/am335x-icev2.dts | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm/boot/dts/am335x-icev2.dts 
b/arch/arm/boot/dts/am335x-icev2.dts
index 7d8b8fefdf08..f2de594343f2 100644
--- a/arch/arm/boot/dts/am335x-icev2.dts
+++ b/arch/arm/boot/dts/am335x-icev2.dts
@@ -139,6 +139,15 @@
                        default-state = "off";
                };
        };
+       gpio-decoder0 {
+               compatible = "gpio-decoder";
+               gpios = <&pca9536 3 GPIO_ACTIVE_HIGH>,
+                       <&pca9536 2 GPIO_ACTIVE_HIGH>,
+                       <&pca9536 1 GPIO_ACTIVE_HIGH>,
+                       <&pca9536 0 GPIO_ACTIVE_HIGH>;
+               linux,axis = <0>; /* ABS_X */
+               gpio-decoder,max-value = <9>;
+       };
 };
 
 &am33xx_pinmux {
-- 
2.9.2