Re: [PATCH RESEND v2 08/12] dt-bindings: add binding for generic eDP panel

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On Mon, Feb 4, 2019 at 2:26 PM Vasily Khoruzhick <anarsoul@xxxxxxxxx> wrote:
>
> On Mon, Feb 4, 2019 at 12:23 PM Rob Herring <robh+dt@xxxxxxxxxx> wrote:
>
> > > simple-panel would probably work if you stuck in some mostly compatible
> > > string and provided a ddc-i2c-bus property in the device tree node. The
> > > generic-ish fallback case could be implemented by providing a fallback
> > > compatible string (we used to have "simple-panel", which I think would
> > > still be adequate for this I suppose) and adding a dummy descriptor in
> > > the driver, perhaps one with pre-defined delays that could be adjusted
> > > to work for all cases, or they could just be 0. At least that way we'd
> > > be explicitly documenting that we support this as a fallback.
> >
> > I'd like something more specific than 'simple-panel' that at least
> > implies it has EDID and whatever else we think it should imply.
> >
> > Looking into this a bit more, why don't we just do a connector here?
> > eDP has a standard connector (with power). It's just like other
> > connectors, but with power and no hotplug. If someone does their own
> > interface, then they should do their own connector or panel binding.
>
> Where do we put backlight in this case?

In the connector node. You'd need a backlight supply,
'backlight-enable-gpios' and backlight phandle to pwm-backlight node.

Rob
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