On Fri, 2017-03-24 at 10:24 +0000, Martyn Welch wrote: [...] > > Could you move to v4.9 or v4.10 and check if the four patches in > > https://git.pengutronix.de/cgit/pza/linux/tag/?id=v4.9-ipu-dp-plane-fix > > or > > https://git.pengutronix.de/cgit/pza/linux/tag/?id=v4.10-ipu-dp-plane-fix-2 > > help? > > > > I've updated to v4.10, the patches from v4.10-ipu-dp-plane-fix-2 resolve > the error, though we are unfortunately still experiencing the loss of > output on LVDS display. Time to look elsewhere for the cause of that I > guess. :-) Is the LVDS serial clock derived from the video PLL on that board? (What is the output of /sys/kernel/debug/clk/clk_summary?) If you are driving high resolution displays from the same IPU, this could also be a bandwidth issue. Maybe try severing the ipu1->hdmi and ipu2->ldb links in the device tree as done in imx6q-utilite-pro.dts. regards Philipp _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
