diff options
| author | Pierre-Louis Bossart <[email protected]> | 2020-09-08 21:45:21 +0800 |
|---|---|---|
| committer | Vinod Koul <[email protected]> | 2020-09-10 11:21:05 +0530 |
| commit | 32d2a8935bf8faf201ff1a859eeb43ef6e5e438d (patch) | |
| tree | 60d25591d63659cb37339c07b1e3efb580a4ffe4 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | a350aff45b4d33355cdc59b7b76950e39639e32f (diff) | |
soundwire: cadence: add parity error injection through debugfs
The Cadence IP can inject errors, let's make use of this capability to
test Slave parity error checks.
See e.g. example log where both the master and slave detect the parity
error injected on a dummy read command.
cd /sys/kernel/debug/soundwire/master-1/intel-sdw/
echo 1 > cdns-parity-error-injection
[ 44.756249] intel-master sdw-master-1: Parity error
[ 44.756313] intel-master sdw-master-1: Msg NACK received
[ 44.756366] intel-master sdw-master-1: Msg NACKed for Slave 15
[ 44.756375] intel-master sdw-master-1: trf on Slave 15 failed:-5
[ 44.756382] intel-master sdw-master-1: parity error injection, read: -5
[ 44.756649] rt1308 sdw:1:25d:1308:0: Parity error detected
The code makes sure the Master device is resumed, hence the clock
restarted, before sending a parity error.
Signed-off-by: Pierre-Louis Bossart <[email protected]>
Signed-off-by: Bard Liao <[email protected]>
Reviewed-by: Kai Vehmanen <[email protected]>
Reviewed-by: Guennadi Liakhovetski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions