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| author |   Markus Pargmann <mpa@pengutronix.de> | 2013-10-29 08:47:47 +0100 |
|---|---|---|
| committer |   Vinod Koul <vinod.koul@intel.com> | 2013-11-13 15:38:30 +0530 |
| commit | 702e94d66b555622ca6830de3095b5f0bb2ff6d7 (patch) | |
| tree | 9a1319edf4ad1a6601aee57692a925e8d952bc02 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | dma: mxs-dma: Report correct residue for cyclic DMA (diff) | |
| download | linux-dev-702e94d66b555622ca6830de3095b5f0bb2ff6d7.tar.xz linux-dev-702e94d66b555622ca6830de3095b5f0bb2ff6d7.zip | |
dma: mxs-dma: Fix channel reset hardware bug
This is no official errata, but I noticed that the channel reset may
stop working if the DMA state engine is in the READ_FLUSH state.
This patch uses the channel debug1 register to wait for the DMA
statemachine to leave the READ_FLUSH state. After that we can continue
to reset the channel.
Tested on i.MX28.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions