[Bug 103159] [CI] igt at kms_plane_scaling - Test assertion failure function igt_drm_plane_commit Failed assertion: ret == 0

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103159

krisman at collabora.co.uk changed:

           What    |Removed                     |Added
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             Status|NEW                         |ASSIGNED

--- Comment #3 from krisman at collabora.co.uk ---

> [drm:__setplane_internal] Invalid pixel format XR24 little-endian
> (0x34325258)

So... this is a regression introduced by igt commit 

ca20170afc6f ("tests/kms_plane_scaling: Add support for dynamic number of
planes").

which I have a patch to fix.


> [drm:skl_check_pipe_max_pixel_rate [i915]] Max supported pixel clock with
> scaling exceeded

This appeared with the pixel rate check in linux commit:

73b0ca8ec76d ("drm/i915/skl+: consider max supported plane pixel rate while
scaling").

I'll review this algorithm, but I still don't know why we calculate such a high
rate.  We have a 4.2 plane_downscale which seems too big.  

I plan to send both patches as soon as i figure the second error out.

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