drm/amd/display: set dig fifo read start level to 7 before dig fifo reset

[Why]
DIG_FIFO_ERROR = 1 caused mst daisy chain 2nd monitor black.

[How]
We need to set dig fifo read start level = 7 before dig fifo reset during dig
fifo enable according to hardware designer's suggestion. If it is zero, it will
cause underflow or overflow and DIG_FIFO_ERROR = 1.

Reviewed-by: Alvin Lee <[email protected]>
Reviewed-by: Aric Cyr <[email protected]>
Acked-by: Brian Chang <[email protected]>
Signed-off-by: Wang Fudong <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

0 files changed, 0 insertions, 0 deletions