diff options
| author | Nikola Cornij <nikola.cornij@amd.com> | 2021-05-06 22:46:52 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-05-19 22:39:32 -0400 |
| commit | 60d177fdf8843602e1eb9dfb4900a0d260d32c1b (patch) | |
| tree | 7892abacf1af72e638dfbb72bf70068e3f23aa8a /drivers/gpu/drm/amd/display/dc/dcn301 | |
| parent | bbc49fc0326be4f1518fa9d81e527ebf989e6d4e (diff) | |
| download | lwn-60d177fdf8843602e1eb9dfb4900a0d260d32c1b.tar.gz lwn-60d177fdf8843602e1eb9dfb4900a0d260d32c1b.zip | |
drm/amd/display: Use the correct max downscaling value for DCN3.x family
[why]
As per spec, DCN3.x can do 6:1 downscaling and DCN2.x can do 4:1. The
max downscaling limit value for DCN2.x is 250, which means it's
calculated as 1000 / 4 = 250. For DCN3.x this then gives 1000 / 6 = 167.
[how]
Set maximum downscaling limit to 167 for DCN3.x
Signed-off-by: Nikola Cornij <nikola.cornij@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Stylon Wang <stylon.wang@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn301')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c b/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c index 5b54b7fc5105..472696f949ac 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c @@ -843,10 +843,11 @@ static const struct dc_plane_cap plane_cap = { .fp16 = 16000 }, + /* 6:1 downscaling ratio: 1000/6 = 166.666 */ .max_downscale_factor = { - .argb8888 = 600, - .nv12 = 600, - .fp16 = 600 + .argb8888 = 167, + .nv12 = 167, + .fp16 = 167 }, 64, 64 |