drm/amd/display: add dummy pstate workaround to dcn315

DCN315 has to always allow pstate change or SMU will hang. This
workaround achieves this by applying a low pstate change latency
to be used when pstate is calculated to be unsupported. This lower
latency only accounts for memory retraining; a previous change
handles locking in the highest available pstate allowing us to minimize
required latency hiding to only account for memory retraining.

Reviewed-by: Charlene Liu <[email protected]>
Acked-by: Hamza Mahfooz <[email protected]>
Signed-off-by: Dmytro Laktyushkin <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

0 files changed, 0 insertions, 0 deletions