[U-Boot] cfb_console.c: DM_VIDEO conversion questions/suggestions

Tom Rini trini at konsulko.com
Mon May 27 14:58:00 UTC 2019


On Mon, May 27, 2019 at 09:22:05AM +0200, Stefan Agner wrote:
> On 27.05.2019 07:21, Igor Opaniuk wrote:
> > Hi everyone,
> > 
> > I've finally started looking into the cfb_console.c driver and it's
> > conversion to DM_VIDEO after our initial discussion [1].
> > Unfortunately I've a bit underestimated the amount of effort that
> > should be done, as mxsfb.c in the Linux mainline obviously pulls the
> > whole core fb subsystem
> > (drivers/video/fbdev/core), which can take a while and frankly I doubt
> > that this is a proper way to do things here.
> 
> Just wanted to mention that the Linux mxsfb fbdev driver is considered
> deprecated.
> 
> See: https://lore.kernel.org/patchwork/patch/950619/#1135990
> 
> Also note that the new DRM driver does use OF graph style bindings, see:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/display/mxsfb.txt
> 
> > 
> > Taking into account that the deadline for DM_VIDEO conversion is
> > 2019.07, it's unlikely that we will manage to do the full conversions
> > this cfb_console driver and all dependent hw specific drivers in a
> > proper way (where we can provide information about videomodes as
> > properties in a proper nodes in DT).
> 
> IMHO, if the deadline hinders us to do it properly, we should extend the
> deadline.

Agreed.  We can always extend deadlines as needed when people are
working to solve the problem, and we want it solved correctly.  Thanks
all!

-- 
Tom
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