Commit fd5d2974 authored May 16, 2022 by Oleksandr Suvorov Committed by Shawn Guo Jun 11, 2022

ARM: dts: imx7-colibri: improve wake-up with gpio key



The pin GPIO1_IO01 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 GPIO1_IO01 to +3v3.

Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

parent cfa7a1e1

arch/arm/boot/dts/imx7-colibri-aster.dtsi

+1 −1

Original line number	Diff line number	Diff line
		@@ -15,7 +15,7 @@ gpio-keys {

		power {
		label = "Wake-Up";
		gpios = <&gpio1 1 GPIO_ACTIVE_HIGH>;
		gpios = <&gpio1 1 (GPIO_ACTIVE_HIGH \| GPIO_PULL_DOWN)>;
		linux,code = <KEY_WAKEUP>;
		debounce-interval = <10>;
		wakeup-source;

arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi

+1 −1

Original line number	Diff line number	Diff line
		@@ -34,7 +34,7 @@ gpio-keys {

		power {
		label = "Wake-Up";
		gpios = <&gpio1 1 GPIO_ACTIVE_HIGH>;
		gpios = <&gpio1 1 (GPIO_ACTIVE_HIGH \| GPIO_PULL_DOWN)>;
		linux,code = <KEY_WAKEUP>;
		debounce-interval = <10>;
		wakeup-source;