linux-kernel - Re: [PATCH v7 02/13] dt-bindings: panel: Convert rocktech, jh057n00900 to yaml

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Date:   Fri, 3 Jul 2020 12:44:48 +0200
From:   Ondřej Jirman <megous@...ous.com>
To:     Sam Ravnborg <sam@...nborg.org>
Cc:     Rob Herring <robh@...nel.org>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Guido Günther <agx@...xcpu.org>,
        linux-kernel@...r.kernel.org, Purism Kernel Team <kernel@...i.sm>,
        Chen-Yu Tsai <wens@...e.org>,
        Samuel Holland <samuel@...lland.org>,
        devicetree@...r.kernel.org, Bhushan Shah <bshah@....org>,
        Thierry Reding <thierry.reding@...il.com>,
        linux-sunxi@...glegroups.com, Luca Weiss <luca@...tu.xyz>,
        Martijn Braam <martijn@...xit.nl>,
        Icenowy Zheng <icenowy@...c.io>,
        Maxime Ripard <mripard@...nel.org>,
        linux-arm-kernel@...ts.infradead.org,
        dri-devel@...ts.freedesktop.org,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH v7 02/13] dt-bindings: panel: Convert rocktech,
 jh057n00900 to yaml

Hello Sam,

On Fri, Jul 03, 2020 at 07:11:55AM +0200, Sam Ravnborg wrote:
> Hi Ondrej.
> 
> > > My bot found errors running 'make dt_binding_check' on your patch:
> > > 
> > > /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/bridge/nwl-dsi.example.dt.yaml: panel@0: '#address-cells', '#size-cells', 'port@0' do not match any of the regexes: 'pinctrl-[0-9]+'
> > > /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/bridge/nwl-dsi.example.dt.yaml: panel@0: 'vcc-supply' is a required property
> > > /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/bridge/nwl-dsi.example.dt.yaml: panel@0: 'iovcc-supply' is a required property
> > > /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/bridge/nwl-dsi.example.dt.yaml: panel@0: 'reset-gpios' is a required property
> > 
> > Paths look bogus ^^^^
> > 
> > It should be .../rocktech,jh057n00900.yaml: ...
> 
> The example in nwl-dsi.yaml contains:
> 	compatible = "rocktech,jh057n00900";
> 
> So the example is checked against your updated binding.
> And the binding check fails because the example is no longer valid.

Ah, now I understand.

> This needs to be fixed as we do not wat to introduce new errors.
> Either the example or the binding needs the fix.

I think we can unrequire the supplies, but reset is needed really.

The panel only has one port, so there should be no address/size-cells
in the example, and port@0 should be just port to match existing binding.
If it had  multiple ports, port@0 would have to be inside ports { } node
anyway, according to the existing binding. Then add reset-gpios to
the example...

And that should fix it.

I'll prepare the patch shortly.

regards,
	o.

> 	Sam
> 
> 
> > 
> > regards,
> > 	o.
> > 
> > > 
> > > See https://patchwork.ozlabs.org/patch/1320690
> > > 
> > > 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
> > > 
> > > Please check and re-submit.
> > >