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| author | Gil Fine <gil.fine@intel.com> | 2022-05-26 12:59:21 +0200 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2022-06-06 11:24:56 +0200 |
| commit | 3084b48fa13931400f316e2b9ffdd98b8ba6600e (patch) | |
| tree | 87e88f0bcdef11a68e04d8e440d4e8561758688b /drivers/thunderbolt/tb.h | |
| parent | thunderbolt: Add CL1 support for USB4 and Titan Ridge routers (diff) | |
| download | linux-3084b48fa13931400f316e2b9ffdd98b8ba6600e.tar.xz linux-3084b48fa13931400f316e2b9ffdd98b8ba6600e.zip | |
thunderbolt: Change TMU mode to HiFi uni-directional once DisplayPort tunneled
Here we configure TMU mode to HiFi uni-directional once DP tunnel
is created. This is due to accuracy requirement for DP tunneling
as appears in CM guide 1.0, section 7.3.2.
Due to Intel hardware limitation, once we changed the TMU mode to HiFi
uni-directional (when DP tunnel exists), we don't change TMU mode back to
normal uni-directional, even if DP tunnel is torn down later.
Signed-off-by: Gil Fine <gil.fine@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 | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 3882b6eb9f51..e2f50fd90ba9 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -934,6 +934,8 @@ int tb_switch_tmu_enable(struct tb_switch *sw); void tb_switch_tmu_configure(struct tb_switch *sw, enum tb_switch_tmu_rate rate, bool unidirectional); +void tb_switch_enable_tmu_1st_child(struct tb_switch *sw, + enum tb_switch_tmu_rate rate); /** * tb_switch_tmu_is_enabled() - Checks if the specified TMU mode is enabled * @sw: Router whose TMU mode to check |