linux-kernel - Re: [PATCH V8 1/4] dt-bindings: fsl: scu: add thermal binding

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Message-ID: <20190223214018.GC1472@localhost.localdomain>
Date:   Sat, 23 Feb 2019 13:40:19 -0800
From:   Eduardo Valentin <edubezval@...il.com>
To:     Anson Huang <anson.huang@....com>
Cc:     "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
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Subject: Re: [PATCH V8 1/4] dt-bindings: fsl: scu: add thermal binding

On Sat, Feb 23, 2019 at 01:38:00PM -0800, Eduardo Valentin wrote:
> On Thu, Feb 21, 2019 at 06:38:30AM +0000, 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 thermal sensors etc. management, Linux kernel
> > has to communicate with system controller via MU (message unit)
> > IPC to get temperature from thermal sensors, this patch adds
> > binding doc for i.MX system controller thermal driver.
> > 
> > Signed-off-by: Anson Huang <Anson.Huang@....com>
> > Reviewed-by: Rob Herring <robh@...nel.org>
> > ---
> > Changes since V7:
> >         - remove unused property "tsens-num";
> >         - improve the compatible description;
> >         - update examples according to latest dts file.
> > ---
> >  .../devicetree/bindings/arm/freescale/fsl,scu.txt     | 19 +++++++++++++++++++
> >  1 file changed, 19 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
> > index 72d481c..d89147e 100644
> > --- a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
> > +++ b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
> > @@ -122,6 +122,19 @@ RTC bindings based on SCU Message Protocol
> >  Required properties:
> >  - compatible: should be "fsl,imx8qxp-sc-rtc";
> >  
> > +Thermal bindings based on SCU Message Protocol
> > +------------------------------------------------------------
> > +
> > +Required properties:
> > +- compatible:			Should be :
> > +				  "fsl,imx8qxp-sc-thermal"
> > +				followed by "fsl,imx-sc-thermal";
> > +
> > +- #thermal-sensor-cells:	See Documentation/devicetree/bindings/thermal/thermal.txt
> > +				for a description.
> > +
> > +- imx,sensor-resource-id: 	Property array to specify each thermal zone's sensor resource ID.
> 
> If this is an array...
> 
> > +
> >  Example (imx8qxp):
> >  -------------
> >  lsio_mu1: mailbox@...c0000 {
> > @@ -168,6 +181,12 @@ firmware {
> >  		rtc: rtc {
> >  			compatible = "fsl,imx8qxp-sc-rtc";
> >  		};
> > +
> > +		tsens: thermal-sensor {
> > +			compatible = "fsl,imx8qxp-sc-thermal", "fsl,imx-sc-thermal";
> > +			#thermal-sensor-cells = <0>;
> > +			imx,sensor-resource-id = <IMX_SC_R_SYSTEM>;
> 
> then this example should have an array, to be better express how this is
> supposed to work. Can you please resend this with an array instead?

I mean this could be one example of an array with more than one element.

> 
> > +		};
> >  	};
> >  };
> >  
> > -- 
> > 2.7.4
> >