Hi, On Fri, Dec 15, 2017 at 04:21:50PM +0100, Hans Verkuil wrote: > When I connected my cubieboard running 4.15-rc1 to my 4k display I got no picture. Some > digging found that there is no check against the upper pixelclock limit of the HDMI > output, so X selects a 4kp60 format at 594 MHz, which obviously won't work. > > The patch below adds a check for the upper bound of what this hardware can do, and > it checks if the requested tmds clock can be obtained. > > It also allows for the +/- 0.5% pixel clock variation that the HDMI spec permits. > > That code is based on commit 22d0be2a557e53a22feb484e8fce255fe09e6ad5 from > Jose Abreu for drm/arc. > > Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx> > Thanks-to: Jose Abreu <Jose.Abreu@xxxxxxxxxxxx> I've fixed the checkpatch warnings, and the compilation warning about the type mismatch (between long and unsigned long), and applied. Thanks! Maxime -- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
