[PATCH v2 0/7] drm/tilcdc: LCDC Revision 1 related fixes

[Bartosz Golaszewski]

2016-11-16 13:40 GMT+01:00 Jyri Sarha <jsarha at ti.com>:
> Changes since first version of the series:
>
> - Move tilcdc_regs.h changes from "drm/tilcdc: Enable palette loading
>   for revision 2 LCDC too" to "drm/tilcdc: Add tilcdc_write_mask() to
>   tilcdc_regs.h"
>
> These patches are inspired by this series form Bartosz Golaszewski:
> https://www.spinics.net/lists/arm-kernel/msg539629.html
>
> The patches are based on drm-next plus the earlier patches that I plan
> to send in a pull request for 4.10. The base + these patches are
> pushed here:
>
> https://github.com/jsarha/linux drm-next-tilcdc-for-4.10-wip
>
> Bartosz, please test if this branch works for rev1 LCDC, with your dts
> file!
>

Hi Jyri,

with your changes I'm getting the following warning on initialization:

[drm] Initialized
[drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[drm] No driver support for vblank timestamp query.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at drivers/gpu/drm/drm_atomic_helper.c:1141
drm_atomic_helper_wait_for_vblanks+0x23c/0x24c
[CRTC:24] vblank wait timed out
Modules linked in:
CPU: 0 PID: 1 Comm: swapper Not tainted 4.9.0-rc4-00939-ge79af2c #60
Hardware name: Generic DA850/OMAP-L138/AM18x
Backtrace:
    [snip]

and the same when running simple modetest (no vsynced page flipping).

The default resolution still works and I can start a graphical environment.

Thanks,
Bartosz