[PATCH v2 1/2] ARM: dts: imx6ul: mba6ulx: Mark gpio-buttons as wakeup-source

[Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>]

I2C expander is capable of generating an IRQ during powersave, so the
attached buttons can be used for waking up the system.

Signed-off-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>
---
 arch/arm/boot/dts/nxp/imx/mba6ulx.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm/boot/dts/nxp/imx/mba6ulx.dtsi b/arch/arm/boot/dts/nxp/imx/mba6ulx.dtsi
index ebf97fcdd8ea..632ceadcca41 100644
--- a/arch/arm/boot/dts/nxp/imx/mba6ulx.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/mba6ulx.dtsi
@@ -39,18 +39,21 @@ button1 {
 			label = "s14";
 			linux,code = <KEY_1>;
 			gpios = <&expander_in0 0 GPIO_ACTIVE_LOW>;
+			wakeup-source;
 		};
 
 		button2 {
 			label = "s6";
 			linux,code = <KEY_2>;
 			gpios = <&expander_in0 1 GPIO_ACTIVE_LOW>;
+			wakeup-source;
 		};
 
 		button3 {
 			label = "s7";
 			linux,code = <KEY_3>;
 			gpios = <&expander_in0 2 GPIO_ACTIVE_LOW>;
+			wakeup-source;
 		};
 
 		power-button {
-- 
2.34.1