Re: [PATCH v10 1/4] dt-bindings: media: i2c: Add bindings for Maxim Integrated MAX9286

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On Sat, Jun 13, 2020 at 6:28 AM Jacopo Mondi <jacopo@xxxxxxxxxx> wrote:
>
> Hi Rob,
>
> On Fri, Jun 12, 2020 at 04:10:03PM -0600, Rob Herring wrote:
> > On Fri, 12 Jun 2020 15:47:10 +0100, Kieran Bingham wrote:
> > > From: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
> > >
> > > The MAX9286 deserializes video data received on up to 4 Gigabit
> > > Multimedia Serial Links (GMSL) and outputs them on a CSI-2 port using up
> > > to 4 data lanes.
> > >
> > > Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
> > > Signed-off-by: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
> > > Signed-off-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
> > > Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
> > > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
> > > Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
> > >
> > > ---
> > >
> > > v7:
> > >  - Collect Rob's RB tag
> > >  - Remove redundant maxItems from remote-endpoints
> > >  - Fix SPDX licence tag
> > >
> > > v10:
> > > [Jacopo]
> > >  - Fix dt-validation
> > >  - Fix dt-binding examples with 2 reg entries
> > >
> > > [Kieran]
> > >  - Correctly match the hex camera node reg
> > >  - Add (required) GPIO controller support
> > >
> > >  .../bindings/media/i2c/maxim,max9286.yaml     | 366 ++++++++++++++++++
> > >  1 file changed, 366 insertions(+)
> > >  create mode 100644 Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
> > >
> >
> >
> > My bot found errors running 'make dt_binding_check' on your patch:
> >
> > /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/media/i2c/maxim,max9286.example.dt.yaml: example-0: i2c@e66d8000:reg:0: [0, 3865935872, 0, 64] is too long
> >
> >
> > See https://patchwork.ozlabs.org/patch/1308280
> >
> > If you already ran 'make dt_binding_check' and didn't see the above
> > error(s), then make sure dt-schema is up to date:
> >
> > pip3 install git+https://github.com/devicetree-org/dt-schema.git@master --upgrade
> >
>
> I have updated my dt-schema installation to the latest github master
> -------------------------------------------------------------------------------
> Successfully installed dtschema-2020.6.dev8+g4d2d86c
>
> https://github.com/devicetree-org/dt-schema/commit/4d2d86c5cd65cd3944ce0aaa400866bc36727bea
>
> $ /usr/bin/dt-validate -V
> 2020.6.dev8+g4d2d86c
> -------------------------------------------------------------------------------
>
> But I still cannot reproduce the error.
>
> However, I see this commit in your next branch
> https://github.com/devicetree-org/dt-schema/commit/b72500282cfd2eba6f9df4d7553f696544b40ee6
> "schemas: Add a schema to check 'reg' sizes "
>
> Which sounds very likely related to the above reported error.
> Was this intentional ?

Yes, I can't add the new checks to master until all the in tree schema
are fixed yet I want to check submissions with pending checks, so I
created the 'next' branch.

> I'm not sure how I should handle this. The error reports the i2c node
> parents should have both address-cells and size-cells properties set
> to 2, but in the example there is not i2c node parent at all :)
> Should I add a parent node for the i2c in the example snippet ?

The examples have default sizes of 1 cell. If you need something
different, the example has to define a parent node to specify it. In
your case, I'd just change 'reg' to use 1 cell each.

Rob




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