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

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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>
This commit is contained in:
Oleksandr Suvorov
2022-05-16 15:47:16 +02:00
committed by Shawn Guo
parent cfa7a1e150
commit fd5d297465
2 changed files with 2 additions and 2 deletions
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2
arch/arm/boot/dts/imx7-colibri-aster.dtsi
View File

@@ -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;

2
arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi
View File

@@ -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;