Hi, Rob
> On Fri, Aug 30, 2019 at 04:53:45PM -0400, Anson Huang wrote:
> > NXP i.MX8QXP is an ARMv8 SoC with a Cortex-M4 core inside as system
> > controller, the system controller is in charge of system power, clock
> > and power key event etc. management, Linux kernel has to communicate
> > with system controller via MU (message unit) IPC to get power key
> > event, add binding doc for i.MX system controller power key driver.
> >
> > Signed-off-by: Anson Huang <Anson.Huang@xxxxxxx>
> > ---
> > .../devicetree/bindings/arm/freescale/fsl,scu.txt | 18
> ++++++++++++++++++
> > 1 file changed, 18 insertions(+)
> >
> > diff --git
> > a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
> > b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
> > index c149fad..001d0b7 100644
> > --- a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
> > +++ b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
> > @@ -157,6 +157,17 @@ Required properties:
> > Optional properties:
> > - timeout-sec: contains the watchdog timeout in seconds.
> >
> > +Power key bindings based on SCU Message Protocol
> > +------------------------------------------------------------
> > +
> > +Required properties:
> > +- compatible: should be:
> > + "fsl,imx8qxp-sc-pwrkey"
> > + followed by "fsl,imx-sc-pwrkey";
> > +- linux,keycodes: See
> > +Documentation/devicetree/bindings/input/keys.txt
> > +Optional Properties:
> > +- wakeup-source: See
> > +Documentation/devicetree/bindings/power/wakeup-source.txt
> > +
> > Example (imx8qxp):
> > -------------
> > aliases {
> > @@ -220,6 +231,13 @@ firmware {
> > compatible = "fsl,imx8qxp-sc-rtc";
> > };
> >
> > + scu_pwrkey: scu-pwrkey {
> > + compatible = "fsl,imx8qxp-sc-pwrkey", "fsl,imx-sc-
> pwrkey";
> > + linux,keycode = <KEY_POWER>;
> > + wakeup-source;
>
> wakeup-source implies an interrupt property.
After further check, I confirm this "wakeup-source" property is NOT needed for SCU general interrupt
wakeup, remove it in V2.
>
> > + status = "disabled";
>
> Don't should status in examples.
Removed it in V2, please help review, thanks.
Anson
