Re: [PATCH v3 1/2] dt-bindings: i2c: Add binding for Qualcomm CCI I2C controller

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On Tue 07 Aug 10:39 PDT 2018, Rob Herring wrote:

> On Tue, Aug 07, 2018 at 09:48:26AM +0530, Vinod wrote:
> > On 06-08-18, 11:03, Bjorn Andersson wrote:
> > > On Mon 06 Aug 04:04 PDT 2018, Vinod Koul wrote:
> > > 
> > > > From: Todor Tomov <todor.tomov@xxxxxxxxxx>
> > > > 
> > > > Add DT binding document for Qualcomm Camera Control Interface (CCI)
> > > > I2C controller.
> > > > 
> > > > Signed-off-by: Todor Tomov <todor.tomov@xxxxxxxxxx>
> > > > Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
> > > > ---
> > > >  .../devicetree/bindings/i2c/i2c-qcom-cci.txt       | 55 ++++++++++++++++++++++
> > > >  1 file changed, 55 insertions(+)
> > > >  create mode 100644 Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt
> > > > 
> > > > diff --git a/Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt b/Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt
> > > > new file mode 100644
> > > > index 000000000000..977978dd4444
> > > > --- /dev/null
> > > > +++ b/Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt
> > > > @@ -0,0 +1,55 @@
> > > > +Qualcomm Camera Control Interface (CCI) I2C controller
> > > > +
> > > > +Required properties:
> > > > + - compatible: Should be one of:
> > > > +   - "qcom,cci-v1.0.8" for 8916;
> > > > +   - "qcom,cci-v1.4.0" for 8996.
> > > 
> > > As pointed out by Rob previously we should either use version numbers or
> > > platform numbers, not both.
> 
> Not really what I said...
> 

Sorry, I thought this was part of your concern.

Then I'll revise my statement to: if we're going to list the platforms
here anyways I think we should just use the platform numbering as
compatible directly.

> > > 
> > > So this should either be:
> > > 
> > > 	- "qcom,cci-v1.0.8"

This is supposed to be 1.1.0 for 8916...

> > > 	- "qcom,cci-v1.4.0"
> > 
> > ok will use this one..
> > 
> > > 
> > > or:
> > > 
> > > 	- "qcom,msm8916-cci"
> > > 	- "qcom,msm8996-cci"
> 
> I strongly prefer this one as I've yet to be convinced there is a strong 
> benefit of version numbers and every other binding follows this 
> convention.
> 

Looking through the list of versions for this block and the platforms
that there's any upstream interest in we have 6 versions covering 7
platforms.

So I agree with you.

Regards,
Bjorn
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