linux-kernel - Re: [PATCH V2 1/5] dt-bindings: fsl: scu: add scu power key binding

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Message-ID: <20190922161347.GB1999@bug>
Date:   Sun, 22 Sep 2019 18:13:47 +0200
From:   Pavel Machek <pavel@....cz>
To:     Anson Huang <Anson.Huang@....com>
Cc:     robh+dt@...nel.org, mark.rutland@....com, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        catalin.marinas@....com, will@...nel.org,
        dmitry.torokhov@...il.com, aisheng.dong@....com,
        ulf.hansson@...aro.org, fugang.duan@....com, peng.fan@....com,
        daniel.baluta@....com, leonard.crestez@....com, mripard@...nel.org,
        olof@...om.net, arnd@...db.de, jagan@...rulasolutions.com,
        bjorn.andersson@...aro.org, dinguyen@...nel.org,
        marcin.juszkiewicz@...aro.org, stefan@...er.ch,
        gregkh@...uxfoundation.org, andriy.shevchenko@...ux.intel.com,
        yuehaibing@...wei.com, tglx@...utronix.de, ronald@...ovation.ch,
        m.felsch@...gutronix.de, ping.bai@....com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-input@...r.kernel.org,
        Linux-imx@....com
Subject: Re: [PATCH V2 1/5] dt-bindings: fsl: scu: add scu power key binding

Hi!

> 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@....com>

> +++ b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
> @@ -157,6 +157,15 @@ 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

Actually there's no reason for having "linux,keycodes" property when it is always
a power button.

Best regards,
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html