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SubjectRe: [PATCH 7/9] dt-bindings: tegra186-gpio: Add wakeup parent support
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On 21/09/2018 19.25, Thierry Reding wrote:
> From: Thierry Reding <treding@nvidia.com>
>
> Tegra186 and later have some top-level controls for wake events in the
> power management controller (PMC). In order to enable the system to wake
> up from low power states, additional registers in the PMC need to be
> programmed. Add a wakeup-parent property to establish this relationship
> between the GPIO controller and the PMC.
>
> Signed-off-by: Thierry Reding <treding@nvidia.com>
> ---
> .../devicetree/bindings/gpio/nvidia,tegra186-gpio.txt | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/gpio/nvidia,tegra186-gpio.txt b/Documentation/devicetree/bindings/gpio/nvidia,tegra186-gpio.txt
> index adff16c71d21..cbb51a8990c3 100644
> --- a/Documentation/devicetree/bindings/gpio/nvidia,tegra186-gpio.txt
> +++ b/Documentation/devicetree/bindings/gpio/nvidia,tegra186-gpio.txt
> @@ -127,6 +127,11 @@ Required properties:
> - 8: Active low level-sensitive.
> Valid combinations are 1, 2, 3, 4, 8.
>
> +Optional properties:
> +- wake-parent

wakeup-parent

Cheers,
Mikko

> + A phandle to the Power Management Controller (PMC) that contains top-
> + level controls to enable the wake-up capabilities of some GPIOs.
> +
> Example:
>
> #include <dt-bindings/interrupt-controller/irq.h>
> @@ -148,6 +153,7 @@ gpio@2200000 {
> #gpio-cells = <2>;
> interrupt-controller;
> #interrupt-cells = <2>;
> + wakeup-parent = <&pmc>;
> };
>
> gpio@c2f0000 {
> @@ -162,4 +168,5 @@ gpio@c2f0000 {
> #gpio-cells = <2>;
> interrupt-controller;
> #interrupt-cells = <2>;
> + wakeup-parent = <&pmc>;
> };
>

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