From 752ddcd291f30f71de747ce25c4ffe843ec6a380 Mon Sep 17 00:00:00 2001
From: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Date: Mon, 9 Jan 2023 14:19:58 +0100
Subject: [PATCH] ARM: dts: colibri-imx6: improve wake-up with gpio key
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>
---
arch/arm/boot/dts/imx6qdl-colibri.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/imx6qdl-colibri.dtsi b/arch/arm/boot/dts/imx6qdl-colibri.dtsi
index f894d69076043..f69fee94a869e 100644
--- a/arch/arm/boot/dts/imx6qdl-colibri.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-colibri.dtsi
@@ -38,7 +38,7 @@
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;
--
2.30.2