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| author | Adrian Ng Ho Yin <adrianhoyin.ng@altera.com> | 2025-12-12 17:02:55 +0800 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2026-01-13 18:26:47 +0100 |
| commit | b58f47eb392680d4c6626c8b3b1fcf6412a0a02c (patch) | |
| tree | c8779ec30cc692300ece3f63bb52555f79380651 /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | 8f0b4cce4481fb22653697cced8d0d04027cb1e8 (diff) | |
| download | linux-b58f47eb392680d4c6626c8b3b1fcf6412a0a02c.tar.gz linux-b58f47eb392680d4c6626c8b3b1fcf6412a0a02c.zip | |
i3c: add sysfs entry and attribute for Device NACK Retry count
Document sysfs attribute dev_nack_retry_cnt that controls the number of
automatic retries performed by the I3C controller when a target device
returns a NACK
Add a `dev_nack_retry_count` sysfs attribute to allow reading and updating
the device NACK retry count. A new `dev_nack_retry_count` field and an
optional `set_dev_nack_retry()` callback are added to
i3c_master_controller. The attribute is created only when the callback is
implemented.
Updates are applied under the I3C bus maintenance lock to ensure safe
hardware reconfiguration.
Signed-off-by: Adrian Ng Ho Yin <adrianhoyin.ng@altera.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/3c4b5082bde64024fc383c44bebeef89ad3c7ed3.1765529948.git.adrianhoyin.ng@altera.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
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