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ARM: dts: colibri-imx6: improve wake-up with gpio key

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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@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Marcel Ziswiler
2023-01-09 14:19:58 +01:00
committed by Shawn Guo
parent 9a1bee3fb7
commit 752ddcd291
1 changed files with 1 additions and 1 deletions
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2
arch/arm/boot/dts/imx6qdl-colibri.dtsi
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@@ -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;