thunderbolt: Reserve released DisplayPort bandwidth for a group for 10 seconds

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The USB4 spec says that the Connection Manager should reserve the
bandwidth that is released in the same group for 10 seconds before it
can be shared with other groups. Add support for this. We also delay the
symmetric transition by that same 10 seconds to avoid any unnecessary
transitions (i.e if the released bandwidth is used by another
DisplayPort tunnel in the same group the link can stay asymmetric the
whole time).

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

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This commit is contained in:

Mika Westerberg 2024-01-09 17:57:10 +02:00

parent 769da9708a

commit 52a4490e89

3 changed files with 184 additions and 29 deletions

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4

drivers/thunderbolt/domain.c

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199

drivers/thunderbolt/tb.c

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10

drivers/thunderbolt/tb.h

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