[PATCH 1/3] video: add support for getting video mode from device tree

[Grant Likely]

On Sun, Feb 28, 2010 at 1:44 AM, Mitch Bradley <wmb at firmworks.com> wrote:
> Grant Likely Wrote:
>> On Sat, Feb 27, 2010 at 2:58 PM, Anatolij Gustschin <agust at denx.de> wrote:
>> Also, since you're now in the realm of describing a video display,
>> which is separate from the display controller, you should consider
>> describing the display in a separate device tree node.  Maybe
>> something like this...
>>
>> video {
>>        compatible = "fsl,mpc5121-diu";
>>        display {
>>                compatible = "<vendor>,<model>";
>>                edid = [edid-data];
>>        };
>> };
>>
>
>
> As it turns out, I'm doing exactly that - exporting verbatim EDID data as
> the value of the "edid" property - for the display node on the Via version
> of the OLPC machine.  The kernel driver uses it instead of trying to obtain
> the EDID data from the monitor, because the builtin OLPC display cannot
> supply EDID data through the usual hardware interfaces.

Cool.  That sounds sane then.  How do you go about generating the EDID
data?  Is there a tool that can do that?  Or did you hand craft it?

Cheers,
g.