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| author | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2016-12-19 15:47:14 +0100 |
|---|---|---|
| committer | Jyri Sarha <jsarha@ti.com> | 2017-01-04 10:22:16 +0200 |
| commit | f97fd383d9a10fd125bcdafba03240685aed5608 (patch) | |
| tree | 563453aa96a8ee6c1f3a68b0be6583a5525709c1 /net/atm/proc.c | |
| parent | 0186fcce896d3cb6fb690ed8b4405c9c1b76977a (diff) | |
| download | linux-f97fd383d9a10fd125bcdafba03240685aed5608.tar.bz2 | |
drm: tilcdc: simplify the recovery from sync lost error on rev1
Revision 2 of LCDC suffers from an issue where a SYNC_LOST error
caused by limited memory bandwidth may leave the picture shifted a
couple pixels to the right.
This issue has not been observed on revision 1, while the recovery
mechanism introduces a different issue, where the END_OF_FRAME
interrupt doesn't fire while drm is waiting for vblanks.
On rev1: recover from sync lost errors by simply clearing the
RASTER_ENABLE bit in the RASTER_CTRL register and re-enabling it
again as is suggested by the datasheet.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Diffstat (limited to 'net/atm/proc.c')
0 files changed, 0 insertions, 0 deletions