Sebastian Hesselbarth <sebastian.hesselba...@gmail.com> wrote on Wed [2013-Jul-31 22:21:20 +0200]: > Darren, > > I now fully understand the issues of AM335x's LCD controller and your > fix for it. I suggest to clarify the comments you added to tilcdc to > allow others to understand it more quickly. > Sebastian, Thanks for looking at my proposed changes, you understand this sync stuff very well so I appreciate your input that this is actually an acceptable workaround.
> Actually, the LCD controller always aligns vsync to the second edge > of hsync, which will never give VESA-compliant sync. The (elegant) > workaround you are proposing is to align both rising edges, so at > least TDA998x can sync on those with some hskew added. Lucky you that > it ignores hsync length but only looks for rising HS/VS edges ;) Yes we definitely got lucky with this one, good thing the NXP supported that reference pixel position, as I was out of options from the lcd controller side of things to adjust the horizontal position. > > Should we prepare a new patch set comprising the following patches? > > Russell King: > drm/i2c: nxp-tda998x: fix EDID reading on TDA19988 devices > drm/i2c: nxp-tda998x: ensure VIP output mux is properly set > drm/i2c: nxp-tda998x: fix npix/nline programming > drm/i2c: nxp-tda998x: prepare for video input configuration > drm/i2c: nxp-tda998x: add video and audio input configuration > > Sebastian Hesselbarth: > drm/i2c: tda998x: fix sync generation and calculation > > Darren Etheridge: > drm/i2c/tda998x prepare for tilcdc sync workaround > drm/tilcdc fixup mode to workaound sync for tda998x > > Or do we keep them separated and possibly resend them if David cannot > find them anymore? I vote we submit a complete series that we can all test, there were quite a lot of versions of things in flight at the same time so I am sure David would appreciate a consolidated version. The only thing I have not tested is audio support, but as the original driver did not have that anyway I don't consider it blocking if it is working for CuBox. Darren _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/dri-devel
