[PATCH 5.19 0206/1157] ARM: dts: imx7-colibri: improve wake-up with gpio key

Greg Kroah-Hartman
2022-08-15T22:43:09Z

From: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>

[ Upstream commit fd5d2974652c96935d94301af6eaf6b3585ab330 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/arm/boot/dts/imx7-colibri-aster.dtsi | 2 +-
arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/imx7-colibri-aster.dtsi b/arch/arm/boot/dts/imx7-colibri-aster.dtsi
index 950b4e5f6cf4..69ee85084ad4 100644
--- a/arch/arm/boot/dts/imx7-colibri-aster.dtsi
+++ b/arch/arm/boot/dts/imx7-colibri-aster.dtsi
@@ -16,7 +16,7 @@ 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;
diff --git a/arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi b/arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi
index 17ad9065646d..d6775e3c64f1 100644
--- a/arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi
+++ b/arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi
@@ -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;
--
2.35.1