Re: dynamic LCD support for "embedded" systems
On Mon, Jul 25, 2011 at 2:06 PM, Alan Cox <email@example.com> wrote:
>> DVI monitor), and that EDID data just gets passed-through via the VGA
>> IC. so it's all the same stuff... so what's the damn difference
>> between a system with a VGA monitor and a system with the exact same
>> LCD panel *from* that VGA monitor, ehn? :) ok, rhetorical question.
> I'm not convinced it is the same stuff for various reaosns and bits of
> historical bug fixing and observation.
yehhs... and arnaud's post also provides some more background, which
includes in some cases intermediate ICs that trash / strip out the
required info. classic...
>> devicetree LCD modules. these could still be dynamically loaded,
>> right? i mean, it's a bit crazy, but you could have associated with a
>> particular LCD panel a devicetree-compliant dynamic loaded module
>> which had the correct LCD settings (including the required pre-tested
>> hsync and vsync data), right?
> In theory, or passed to the kernel at boot.
he-he that's not user-friendly, alain :) the context is a
> The obvious long term path I
> would have thought would have been to move to 'device tree if data present
> else...' in the various panel drivers. That way there are no sudden bumps
> in the road for distributors but a device tree data set from any source
> would trump the data extracted by other means.
ok. right. whew. a migration path. thank god for that. no
terrifying all-convert-to-devicetree-or-die approach, then. shaaame