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Re: [PATCH 1/2] dt-binding: bcm43xx-fmac: add optional brcm,ccode-map

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On Fri, Apr 09, 2021 at 01:46:06PM -0500, Rob Herring wrote:
> On Thu, Apr 08, 2021 at 07:30:21PM +0800, Shawn Guo wrote:
> > Add optional brcm,ccode-map property to support translation from ISO3166
> > country code to brcmfmac firmware country code and revision.
> > 
> > Signed-off-by: Shawn Guo <shawn.guo@xxxxxxxxxx>
> > ---
> >  .../devicetree/bindings/net/wireless/brcm,bcm43xx-fmac.txt | 7 +++++++
> >  1 file changed, 7 insertions(+)
> 
> Can you convert this to schema first.

Yes.  Will do, after driver maintainers agree with the direction.
> 
> > 
> > diff --git a/Documentation/devicetree/bindings/net/wireless/brcm,bcm43xx-fmac.txt b/Documentation/devicetree/bindings/net/wireless/brcm,bcm43xx-fmac.txt
> > index cffb2d6876e3..a65ac4384c04 100644
> > --- a/Documentation/devicetree/bindings/net/wireless/brcm,bcm43xx-fmac.txt
> > +++ b/Documentation/devicetree/bindings/net/wireless/brcm,bcm43xx-fmac.txt
> > @@ -15,6 +15,12 @@ Optional properties:
> >  	When not specified the device will use in-band SDIO interrupts.
> >   - interrupt-names : name of the out-of-band interrupt, which must be set
> >  	to "host-wake".
> > + - brcm,ccode-map : multiple strings for translating ISO3166 country code to
> > +	brcmfmac firmware country code and revision.  Each string must be in
> > +	format "AA-BB-num" where:
> > +	  AA is the ISO3166 country code which must be 2 characters.
> > +	  BB is the firmware country code which must be 2 characters.
> > +	  num is the revision number which must fit into signed integer.
> 
> Signed? So "AA-BB--num"?

Hmm, for some reason, kernel driver uses signed integer to hold the
revision.  It's just a reflecting of that.

> 
> You should be able to do something like:
> 
> items:
>   pattern: '^[A-Z][A-Z]-[A-Z][A-Z]-[0-9]+$'

Ah, yes, that's much better and distinct.  Thanks for the suggestion.

Shawn

> 
> >  
> >  Example:
> >  
> > @@ -34,5 +40,6 @@ mmc3: mmc@1c12000 {
> >  		interrupt-parent = <&pio>;
> >  		interrupts = <10 8>; /* PH10 / EINT10 */
> >  		interrupt-names = "host-wake";
> > +		brcm,ccode-map = "JP-JP-78", "US-Q2-86";
> >  	};
> >  };
> > -- 
> > 2.17.1
> > 



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