Commit 7772fdaef939 ("drm/tegra: Support ARGB and ABGR formats") broke
DRM's MODE_ADDFB IOCTL on Tegra20/30, because it uses XRGBA format if
requested FB depth is 24bpp. As a result, Xorg doesn't work anymore with
both modesetting and opentegra drivers. On all Tegra's each plane has a
blending
Commit 7772fdaef939 ("drm/tegra: Support ARGB and ABGR formats") broke
DRM's MODE_ADDFB IOCTL on Tegra20/30, because it uses XRGBA format if
requested FB depth is 24bpp. As a result, Xorg doesn't work anymore with
both modesetting and opentegra drivers. On all Tegra's each plane has a
blending
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