diff options
| author | Gil Fine <[email protected]> | 2023-03-03 00:17:24 +0200 |
|---|---|---|
| committer | Mika Westerberg <[email protected]> | 2023-03-13 11:54:20 +0200 |
| commit | cd0c1e582b055dea615001b8bd8eccaf6f69f7ce (patch) | |
| tree | c20328d62dc988a28479aa1abcedee61dd596b83 /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf | |
| parent | acec726473822bc6b585961f4ca2a11fa7f28341 (diff) | |
thunderbolt: Add missing UNSET_INBOUND_SBTX for retimer access
According to USB4 retimer specification, the process of firmware update
sequence requires issuing a SET_INBOUND_SBTX port operation that later
shall be followed by UNSET_INBOUND_SBTX port operation. This last step
is not currently issued by the driver but it is necessary to make sure
the retimers are put back to passthrough mode even during enumeration.
If this step is missing the link may not come up properly after
soft-reboot for example.
For this reason issue UNSET_INBOUND_SBTX after SET_INBOUND_SBTX for
enumeration and also when the NVM upgrade is run.
Reported-by: Christian Schaubschläger <[email protected]>
Link: https://lore.kernel.org/linux-usb/[email protected]/
Cc: [email protected]
Signed-off-by: Gil Fine <[email protected]>
Signed-off-by: Mika Westerberg <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf')
0 files changed, 0 insertions, 0 deletions