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| author | Dillon Varone <Dillon.Varone@amd.com> | 2022-10-27 16:22:26 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-11-09 17:41:41 -0500 |
| commit | 01c0c124b9ecaa905468c6f3b3bf3962b276008b (patch) | |
| tree | 9fa4ab2510b9a0fdd7e8cb2884bd8ad679fdd5a5 /drivers/gpu/drm/amd/display/dc/dcn321 | |
| parent | ea192af507d99014775a757bbdb5f6e487fc6c7a (diff) | |
| download | linux-stable-01c0c124b9ecaa905468c6f3b3bf3962b276008b.tar.gz linux-stable-01c0c124b9ecaa905468c6f3b3bf3962b276008b.tar.bz2 linux-stable-01c0c124b9ecaa905468c6f3b3bf3962b276008b.zip | |
drm/amd/display: Enforce minimum prefetch time for low memclk on DCN32
[WHY?]
Data return times when using lowest memclk can be <= 60us, which can cause
underflow on high bandwidth displays with a workload.
[HOW?]
Enforce a minimum prefetch time during validation for low memclk modes.
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@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/dcn321')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn321/dcn321_resource.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn321/dcn321_resource.c b/drivers/gpu/drm/amd/display/dc/dcn321/dcn321_resource.c index 61087f2385a9..6292ac515d1a 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn321/dcn321_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn321/dcn321_resource.c @@ -722,6 +722,7 @@ static const struct dc_debug_options debug_defaults_drv = { .enable_dp_dig_pixel_rate_div_policy = 1, .allow_sw_cursor_fallback = false, .alloc_extra_way_for_cursor = true, + .min_prefetch_in_strobe_ns = 60000, // 60us }; static const struct dc_debug_options debug_defaults_diags = { |