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| author | Gil Fine <gil.fine@linux.intel.com> | 2023-01-31 14:04:52 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2023-03-13 12:54:31 +0300 |
| commit | f0a57dd33b3eadf540912cd130db727ea824d174 (patch) | |
| tree | 7ac76bb197898ddd12f2a5aa1ba0302d7cbed05e /drivers/thunderbolt/tb.h | |
| parent | d2d6ddf188f609861489d5d188d545856a3ed399 (diff) | |
| download | linux-f0a57dd33b3eadf540912cd130db727ea824d174.tar.xz | |
thunderbolt: Limit USB3 bandwidth of certain Intel USB4 host routers
Current Intel USB4 host routers have hardware limitation that the USB3
bandwidth cannot go higher than 16376 Mb/s. Work this around by adding a
new quirk that limits the bandwidth for the affected host routers.
Cc: stable@vger.kernel.org
Signed-off-by: Gil Fine <gil.fine@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tb.h')
| -rw-r--r-- | drivers/thunderbolt/tb.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index b3cd13dc783b..275ff5219a3a 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -272,6 +272,8 @@ struct tb_bandwidth_group { * @group: Bandwidth allocation group the adapter is assigned to. Only * used for DP IN adapters for now. * @group_list: The adapter is linked to the group's list of ports through this + * @max_bw: Maximum possible bandwidth through this adapter if set to + * non-zero. * * In USB4 terminology this structure represents an adapter (protocol or * lane adapter). @@ -299,6 +301,7 @@ struct tb_port { unsigned int dma_credits; struct tb_bandwidth_group *group; struct list_head group_list; + unsigned int max_bw; }; /** |