Re: [RFC PATCH 02/16] dt-bindings: display: rockchip: Add EBC binding

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On Thu, 14 Apr 2022 22:00:09 -0500
Samuel Holland <samuel@xxxxxxxxxxxx> wrote:

> Hi Andreas,
> 
> Thanks for the comments.
> 
> On 4/14/22 3:15 AM, Andreas Kemnade wrote:
> > Hi Samuel,
> > 
> > for comparison, here is my submission for the IMX EPDC bindings:
> > 
> > https://lore.kernel.org/linux-devicetree/20220206080016.796556-2-andreas@xxxxxxxxxxxx/
> > 
> > On Wed, 13 Apr 2022 17:19:02 -0500
> > Samuel Holland <samuel@xxxxxxxxxxxx> wrote:
> > 
> > [...]
> > we have sy7636a driver in kernel which should be suitable for powering a EPD
> > and temperature measurement. So I would expect that to be   
> >> +  io-channels:
> >> +    maxItems: 1
> >> +    description: I/O channel for panel temperature measurement
> >> +  
> > so how would I reference the hwmon/thermal(-zone) of the sy7636a here?  
> 
> It seems the consensus is to use a thermal zone for panel temperature, so I will
> need to change this.
> 
I am open to anything here as long as it fits together.

> I think it's best to reference the thermal zone by phandle, not by name, even if
> it requires extending the thermal zone API to support this.
> 
maybe referencing the hwmon might be interesting, or we add a hwmon_iio
adaptor. The other way round it is there. The thermal zone stuff is
only needed because hwmon cannot referenced directly.

Regards,
Andreas



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