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SubjectRe: [RESENT PATCH v9 1/2] ASoC: rt5514: Add devicetree bindings for rt5514-spi
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Hi Jeffy,

Am Montag, 18. September 2017, 09:22:21 CEST schrieb jeffy:
> On 09/14/2017 01:24 AM, Rob Herring wrote:
> > On Wed, Sep 06, 2017 at 10:50:09AM +0800, Jeffy Chen wrote:
> >> diff --git a/Documentation/devicetree/bindings/sound/rt5514.txt b/Documentation/devicetree/bindings/sound/rt5514.txt
> >> index 929ca6756b02..841a1159e234 100644
> >> --- a/Documentation/devicetree/bindings/sound/rt5514.txt
> >> +++ b/Documentation/devicetree/bindings/sound/rt5514.txt
> >> @@ -4,7 +4,7 @@ This device supports I2C only.
> >
> > SPI support should be added to this document.
> ok, will do.
> >
> >>
> >> Required properties:
> >>
> >> -- compatible : "realtek,rt5514".
> >> +- compatible : "realtek,rt5514" or "realtek,rt5514", "realtek,rt5514-i2c".
> >
> > There's no need for the -spi or -i2c compatibles. This is implied by
> > being a child of those controllers.
> heiko mentioned i should add it in the binding in:
> https://patchwork.kernel.org/patch/9918987/

If you add a new compatible you need to add it to the binding. I think what
Rob means is, that both the i2c and spi side can have the _same_
compatible without the -i2c or -spi, as you can check wether they are
children of either a spi or i2c controller in the code itself.


Heiko

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