[PATCHv3 04/30] drm/omap: decrease min width & height

[Laurent Pinchart]

On Wednesday 29 Mar 2017 11:23:00 Tomi Valkeinen wrote:
> On 29/03/17 11:13, Laurent Pinchart wrote:
> > Hi Tomi,
> > 
> > Thank you for the patch.
> > 
> > On Tuesday 28 Mar 2017 16:07:50 Tomi Valkeinen wrote:
> >> mode_config's min_width and min_height are both set to 32, which is
> >> overly restrictive.
> >> 
> >> The real limits depend on whether we're configuring a crtc or a plane,
> >> but a limit of 8x2 is safe for both cases.
> > 
> > Strictly speaking it's planes in all cases, you could talk about primary
> > or overlay planes instead. Apart from that,
> 
> Hmm, well, on the HW they are different. We have CRTC limits, and we
> have plane limits.
> 
> In our HW, I think we can have 1x1 planes (at least with RGB). But CRTC
> minimum depends on the display used. In some cases CRTC minimum is 1x1,
> but usually it's 8x1 I think.
> 
> And talking about primary or overlay planes is so legacy... With atomic,
> we just have planes! =)

CRTCs and planes are KMS concepts, at the hardware level we have background 
and overlay planes, don't we ?

-- 
Regards,

Laurent Pinchart