[PATCH v2] arm64: dts: rockchip: Add power button for puma-haikou

[Daniel Semkowicz <dse@thaumatec.com>]

There is a PWRBTN# input pin exposed on a Q7 connector. The pin
is routed to a GPIO0_A1 through a diode. Q7 specification describes
the PWRBTN# pin as a Power Button signal.
Configure the pin as KEY_POWER, so it can function as power button and
trigger device shutdown.

Signed-off-by: Daniel Semkowicz <dse@thaumatec.com>
---

Changes in v2:
- Move button definition from puma to puma-haikou dts

 arch/arm64/boot/dts/rockchip/rk3399-puma-haikou.dts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-puma-haikou.dts b/arch/arm64/boot/dts/rockchip/rk3399-puma-haikou.dts
index f6f15946579e..c04bb98a45e5 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-puma-haikou.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-puma-haikou.dts
@@ -30,6 +30,12 @@ button-batlow-n {
 			linux,code = <KEY_BATTERY>;
 		};
 
+		button-pwrbtn-n {
+			gpios = <&gpio0 RK_PA1 GPIO_ACTIVE_LOW>;
+			label = "PWRBTN#";
+			linux,code = <KEY_POWER>;
+		};
+
 		button-slp-btn-n {
 			gpios = <&gpio0 RK_PB3 GPIO_ACTIVE_LOW>;
 			label = "SLP_BTN#";
@@ -203,6 +209,8 @@ &pinctrl {
 	buttons {
 		haikou_keys_pin: haikou-keys-pin {
 			rockchip,pins =
+			  /* PWRBTN# */
+			  <0 RK_PA1 RK_FUNC_GPIO &pcfg_pull_up>,
 			  /* LID_BTN */
 			  <0 RK_PA4 RK_FUNC_GPIO &pcfg_pull_up>,
 			  /* BATLOW# */
-- 
2.46.2