18 Feb
2013
18 Feb
'13
9:07 a.m.
On 02/18/2013 04:40 PM, Mark Zhang wrote:
On 02/18/2013 03:20 PM, Thierry Reding wrote:
[...]
Actually the dc which connects with LVDS doesn't know about 1080p stuffs. All the video mode infos stored in this dc is still 1366x768(I just checked the register values on my Tegra 30 cardhu). The dc just scans 1366 pixels then jump to next line(based on the 1080p line stride we set) and keep scanning.
So the drm crtc helper(I believe it's function: drm_crtc_helper_set_config) finds out that video mode is not changed so a fb_change while not full modeset is triggered.
I started to test this new series patch set just now. I'll let you know whether the issue I described still exists.
Tested. This issue still exists.
Mark
Mark
Thierry