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| author |   Jan Glauber <jglauber@cavium.com> | 2016-12-09 10:31:55 +0100 |
|---|---|---|
| committer |   Wolfram Sang <wsa@the-dreams.de> | 2016-12-11 22:58:34 +0100 |
| commit | ccee1a4cdcd02e748d39d2b121f7f82041893121 (patch) | |
| tree | 835d8c1535e2483f6721df6543d0620f000e1bb6 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | i2c: cadence: Allow Cadence I2C to be selected for Cadence Xtensa CPUs (diff) | |
| download | linux-dev-ccee1a4cdcd02e748d39d2b121f7f82041893121.tar.xz linux-dev-ccee1a4cdcd02e748d39d2b121f7f82041893121.zip | |
i2c: octeon: thunderx: TWSI software reset in recovery
I've seen i2c recovery reporting long loops of:
[ 1035.887818] i2c i2c-4: SCL is stuck low, exit recovery
[ 1037.999748] i2c i2c-4: SCL is stuck low, exit recovery
[ 1040.111694] i2c i2c-4: SCL is stuck low, exit recovery
...
Add a TWSI software reset which clears the status and
STA,STP,IFLG in SW_TWSI_EOP_TWSI_CTL.
With this the recovery works fine and above message is not seen.
Signed-off-by: Jan Glauber <jglauber@cavium.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions