On Wed, Jan 09, 2019 at 09:24:18AM +0800, Mark Zhang wrote:
> Add gpio-keys nodes for the power button.
>
> Signed-off-by: Mark Zhang <markz@xxxxxxxxxx>
> ---
> arch/arm64/boot/dts/nvidia/tegra210-p2894.dtsi | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p2894.dtsi b/arch/arm64/boot/dts/nvidia/tegra210-p2894.dtsi
> index ac52286ab9ab..b21902a98f11 100644
> --- a/arch/arm64/boot/dts/nvidia/tegra210-p2894.dtsi
> +++ b/arch/arm64/boot/dts/nvidia/tegra210-p2894.dtsi
> @@ -1,5 +1,6 @@
> // SPDX-License-Identifier: GPL-2.0
>
> +#include <dt-bindings/input/input.h>
> #include "tegra210.dtsi"
>
> / {
> @@ -52,6 +53,19 @@
> };
> };
>
> + gpio-keys {
> + compatible = "gpio-keys";
> + status = "okay";
> +
> + power {
> + label = "Power";
> + gpios = <&gpio TEGRA_GPIO(X, 7) GPIO_ACTIVE_LOW>;
> + linux,code = <KEY_POWER>;
> + wakeup-source;
I think if you have wakeup-source you also need wakeup-event-action, see
Documentation/devicetree/bindings/input/gpio-keys.txt.
Thierry
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