[PATCH] ARM: dts: imx6sx-sdb: enable gpio buttons as wakeup source

[Anson Huang]

This patch enables i.MX6SX SDB board's below GPIO buttons
as wakeup sources:

SW4(FUNC1): KEY_VOLUMEUP
SW5(FUNC2): KEY_VOLUMEDOWN

Signed-off-by: Anson Huang <anson.hu...@nxp.com>
---
 arch/arm/boot/dts/imx6sx-sdb.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/imx6sx-sdb.dtsi 
b/arch/arm/boot/dts/imx6sx-sdb.dtsi
index f8f3187..53b3408 100644
--- a/arch/arm/boot/dts/imx6sx-sdb.dtsi
+++ b/arch/arm/boot/dts/imx6sx-sdb.dtsi
@@ -40,12 +40,14 @@
                        label = "Volume Up";
                        gpios = <&gpio1 18 GPIO_ACTIVE_LOW>;
                        linux,code = <KEY_VOLUMEUP>;
+                       wakeup-source;
                };
 
                volume-down {
                        label = "Volume Down";
                        gpios = <&gpio1 19 GPIO_ACTIVE_LOW>;
                        linux,code = <KEY_VOLUMEDOWN>;
+                       wakeup-source;
                };
        };
 
-- 
2.7.4