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| author | Alexandru M Stan <amstan@chromium.org> | 2018-07-13 17:41:43 -0700 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2018-07-16 18:25:42 +0000 |
| commit | a7ad347585dd305ea55e6a0d7f8fd97f58ebfb33 (patch) | |
| tree | 5ac0044aac889ba2df33df42314d2d4228890f14 | |
| parent | 023f4602e86ed9fb7e108287e65c978649005c98 (diff) | |
| download | chrome-ec-a7ad347585dd305ea55e6a0d7f8fd97f58ebfb33.tar.gz | |
scarlet: Change FIFO settings
Similar to CL:1134494
Reduce the amount of datum to trigger a FIFO interruption.
To improve timestamping in the kernel, we need to send a
continuous stream of data to the host.
In case of CTS batch test, we may not send anything for x100ms;
the filter will not have any data to estimate the drift and
may output invalid timestamps.
Change the FIFO threshold to try to have more than ~10 samples
in a singe batch. We still need a long FIFO when the EC is busy and can
not process events from the sensor.
BUG=b:73551961
BRANCH=scarlet
TEST=in CtsHardwareTestCases, tests SensorBatchingTests pass more reliably.
Change-Id: I254230498fcf270dfa303cf5eacec5d8abdd1225
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Alexandru M Stan <amstan@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1137454
Reviewed-by: Philip Chen <philipchen@chromium.org>
| -rw-r--r-- | board/scarlet/board.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/board/scarlet/board.h b/board/scarlet/board.h index 2d562a9787..a6120be824 100644 --- a/board/scarlet/board.h +++ b/board/scarlet/board.h @@ -99,7 +99,7 @@ /* FIFO size is in power of 2. */ #define CONFIG_ACCEL_FIFO 256 -#define CONFIG_ACCEL_FIFO_THRES (CONFIG_ACCEL_FIFO / 3) +#define CONFIG_ACCEL_FIFO_THRES 10 /* USB PD config */ #define CONFIG_CHARGE_MANAGER |