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| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2023-09-08 12:07:47 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2023-10-20 18:18:01 +0300 |
| commit | ce91d793ab8bc55804cdac2536bc33c249e75196 (patch) | |
| tree | 4324fd4134b62028ab66f11dfa84f3674a2911f4 /drivers/thunderbolt/tb.h | |
| parent | 582e70b0d3a412d15389a3c9c07a44791b311715 (diff) | |
| download | linux-ce91d793ab8bc55804cdac2536bc33c249e75196.tar.xz | |
thunderbolt: Set path power management packet support bit for USB4 v2 routers
USB4 v2 spec allows USB4 links that are part of a pass through tunnel
(such as DisplayPort and USB 3.x Gen T) to enter lower CL states, which
provide better power management. For this USB4 v2 routers in their path
config space of lane 0 adapter include a new bit PMPS (PM packet
support) that needs to be set.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tb.h')
| -rw-r--r-- | drivers/thunderbolt/tb.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index f29bbafb977f..3c9ae5584569 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -348,6 +348,7 @@ struct tb_retimer { * the path * @nfc_credits: Number of non-flow controlled buffers allocated for the * @in_port. + * @pm_support: Set path PM packet support bit to 1 (for USB4 v2 routers) * * Hop configuration is always done on the IN port of a switch. * in_port and out_port have to be on the same switch. Packets arriving on @@ -368,6 +369,7 @@ struct tb_path_hop { int next_hop_index; unsigned int initial_credits; unsigned int nfc_credits; + bool pm_support; }; /** |