linux-kernel - Re: [PATCH RFC v2 05/14] of: irq: document properties for wakeup interrupt parent

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Date:   Fri, 8 Nov 2019 13:29:17 -0800
From:   Doug Anderson <dianders@...omium.org>
To:     Lina Iyer <ilina@...eaurora.org>
Cc:     Stephen Boyd <swboyd@...omium.org>,
        Evan Green <evgreen@...omium.org>, maz@...nel.org,
        LinusW <linus.walleij@...aro.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        mkshah@...eaurora.org,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>
Subject: Re: [PATCH RFC v2 05/14] of: irq: document properties for wakeup
 interrupt parent

Hi,

On Fri, Sep 13, 2019 at 3:00 PM Lina Iyer <ilina@...eaurora.org> wrote:
>
> Some interrupt controllers in a SoC, are always powered on and have a
> select interrupts routed to them, so that they can wakeup the SoC from
> suspend. Add wakeup-parent DT property to refer to these interrupt
> controllers.
>
> Cc: devicetree@...r.kernel.org
> Signed-off-by: Lina Iyer <ilina@...eaurora.org>
> Reviewed-by: Rob Herring <robh@...nel.org>
> ---
>  .../devicetree/bindings/interrupt-controller/interrupts.txt | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/interrupt-controller/interrupts.txt b/Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
> index 8a3c408..c10e310 100644
> --- a/Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
> +++ b/Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
> @@ -108,3 +108,16 @@ commonly used:
>                         sensitivity = <7>;
>                 };
>         };
> +
> +3) Interrupt wakeup parent
> +--------------------------
> +
> +Some interrupt controllers in a SoC, are always powered on and have a select
> +interrupts routed to them, so that they can wakeup the SoC from suspend. These
> +interrupt controllers do not fall into the category of a parent interrupt
> +controller and can be specified by the "wakeup-parent" property and contain a
> +single phandle referring to the wakeup capable interrupt controller.
> +
> +   Example:
> +       wakeup-parent = <&pdc_intc>;
> +

nit: git flags the above line as whitespace damage.  Please remove
if/when you spin.

Thanks!

-Doug