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ARM: dts: imx7-mba7: Mark gpio-buttons as wakeup-source

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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@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Alexander Stein 2023-12-18 13:54:42 +01:00 committed by Shawn Guo
parent 90ca55dc13
commit d78dd8472e
1 changed files with 9 additions and 0 deletions
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9
arch/arm/boot/dts/nxp/imx/imx7-mba7.dtsi
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@ -32,11 +32,18 @@ chosen {
gpio_buttons: gpio-keys {
compatible = "gpio-keys";
/*
* NOTE: These buttons are attached to a GPIO-expander.
* Enabling wakeup-source, enables wakeup on all inputs.
* If PE_GPIO[3..6] are used as inputs, they cause a
* wakeup as well.
*/
button-0 {
/* #SWITCH_A */
label = "S11";
linux,code = <KEY_1>;
gpios = <&pca9555 13 GPIO_ACTIVE_LOW>;
wakeup-source;
};
button-1 {
@ -44,6 +51,7 @@ button-1 {
label = "S12";
linux,code = <KEY_2>;
gpios = <&pca9555 14 GPIO_ACTIVE_LOW>;
wakeup-source;
};
button-2 {
@ -51,6 +59,7 @@ button-2 {
label = "S13";
linux,code = <KEY_3>;
gpios = <&pca9555 15 GPIO_ACTIVE_LOW>;
wakeup-source;
};
};