From: Marcel Ziswiler <marcel.ziswiler@xxxxxxxxxxx>
The pin GPIO2_IO22 externally pulls down, it is required to sequentially
connect this pin (signal WAKE_MICO#) to +3v3 and then disconnect it to
trigger a wakeup interrupt.
Adding the flag GPIO_PULL_DOWN allows the system to be woken up just
connecting the pin GPIO2_IO22 to +3v3.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@xxxxxxxxxxx>
---
arch/arm/boot/dts/imx6qdl-colibri.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/imx6qdl-colibri.dtsi b/arch/arm/boot/dts/imx6qdl-colibri.dtsi
index d8f985f297e4..9abce6bc6dd4 100644
--- a/arch/arm/boot/dts/imx6qdl-colibri.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-colibri.dtsi
@@ -38,7 +38,7 @@ gpio-keys {
wakeup {
debounce-interval = <10>;
- gpios = <&gpio2 22 GPIO_ACTIVE_HIGH>; /* SODIMM 45 */
+ gpios = <&gpio2 22 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>; /* SODIMM 45 */
label = "Wake-Up";
linux,code = <KEY_WAKEUP>;
wakeup-source;
--
2.35.1
