On Wed, Dec 19, 2018 at 03:11:02PM -0700, Lina Iyer wrote:
> SDM845 SoC has an always-on interrupt controller (PDC) with select GPIO
> routed to the PDC as interrupts that can be used to wake the system up
> from deep low power modes and suspend.
> 
> Cc: [email protected]
> Signed-off-by: Lina Iyer <[email protected]>
> ---
>  .../devicetree/bindings/pinctrl/qcom,sdm845-pinctrl.txt    | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git 
> a/Documentation/devicetree/bindings/pinctrl/qcom,sdm845-pinctrl.txt 
> b/Documentation/devicetree/bindings/pinctrl/qcom,sdm845-pinctrl.txt
> index 665aadb5ea28..a522ca46667d 100644
> --- a/Documentation/devicetree/bindings/pinctrl/qcom,sdm845-pinctrl.txt
> +++ b/Documentation/devicetree/bindings/pinctrl/qcom,sdm845-pinctrl.txt
> @@ -29,6 +29,11 @@ SDM845 platform.
>       Definition: must be 2. Specifying the pin number and flags, as defined
>                   in <dt-bindings/interrupt-controller/irq.h>
>  
> +- wakeup-parent:
> +     Usage: optional
> +     Value type: <phandle>
> +     Definition: A phandle to the wakeup interrupt controller for the SoC.

Is this really necessary? Is there more than one possible wakeup-parent 
node?

> +
>  - gpio-controller:
>       Usage: required
>       Value type: <none>
> @@ -53,7 +58,6 @@ pin, a group, or a list of pins or groups. This 
> configuration can include the
>  mux function to select on those pin(s)/group(s), and various pin 
> configuration
>  parameters, such as pull-up, drive strength, etc.
>  
> -
>  PIN CONFIGURATION NODES:
>  
>  The name of each subnode is not important; all subnodes should be enumerated
> @@ -160,6 +164,7 @@ Example:
>               #gpio-cells = <2>;
>               interrupt-controller;
>               #interrupt-cells = <2>;
> +             wakeup-parent = <&pdc>;
>  
>               qup9_active: qup9-active {
>                       mux {
> -- 
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
> 

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