ARM: nomadik: add led and key for S8815

This adds device tree hunks for the LED and userbutton on the
USB S8815 board, and set up a heartbeat trigger on the LED and
an escape key on the user button. Alter the defconfig to enable
these standard DT-enabled GPIO drivers.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/ste-nomadik-s8815.dts b/arch/arm/boot/dts/ste-nomadik-s8815.dts
index b28fbf3408e3..666945adc120 100644
--- a/arch/arm/boot/dts/ste-nomadik-s8815.dts
+++ b/arch/arm/boot/dts/ste-nomadik-s8815.dts
@@ -27,4 +27,26 @@
                         gpios = <&gpio3 16 0x1>;
                 };
         };
+
+        /* The user LED on the board is set up to be used for heartbeat */
+        leds {
+                compatible = "gpio-leds";
+                user-led {
+                        label = "user_led";
+                        gpios = <&gpio0 2 0x1>;
+                        default-state = "off";
+                        linux,default-trigger = "heartbeat";
+                };
+        };
+
+        /* User key mapped in as "escape" */
+        gpio-keys {
+                compatible = "gpio-keys";
+                user-button {
+                        label = "user_button";
+                        gpios = <&gpio0 3 0x1>;
+                        linux,code = <1>; /* KEY_ESC */
+                        gpio-key,wakeup;
+                };
+        };
 };