diff options
| author | Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2017-02-24 16:09:40 +0200 |
|---|---|---|
| committer | Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2017-08-25 18:48:00 +0300 |
| commit | a0e7df335afd2a8a8a688251ffee375b58b6517c (patch) | |
| tree | 6639e55ee5fb65286bde48fdbfa6f4ab16890077 /drivers/hwtracing/intel_th/intel_th.h | |
| parent | 29e15e83a99cdc13d0d38de558fbea641f8fdda8 (diff) | |
intel_th: Perform time resync on capture start
On some devices (TH 2.x devices at the moment), the internal time counter
is initially not synchronized to the global crystal clock, so the time
stamps it produces will not be useful. In this case, the driver needs
to force the time counter resync.
This applies the workaround to relevant devices.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Diffstat (limited to 'drivers/hwtracing/intel_th/intel_th.h')
| -rw-r--r-- | drivers/hwtracing/intel_th/intel_th.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/hwtracing/intel_th/intel_th.h b/drivers/hwtracing/intel_th/intel_th.h index 78a4fb28b135..99ad563fc40d 100644 --- a/drivers/hwtracing/intel_th/intel_th.h +++ b/drivers/hwtracing/intel_th/intel_th.h @@ -298,6 +298,10 @@ enum { REG_GTH_OFFSET = 0x0000, REG_GTH_LENGTH = 0x2000, + /* Timestamp counter unit (TSCU) */ + REG_TSCU_OFFSET = 0x2000, + REG_TSCU_LENGTH = 0x1000, + /* Software Trace Hub (STH) [0x4000..0x4fff] */ REG_STH_OFFSET = 0x4000, REG_STH_LENGTH = 0x2000, |