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drm/amd/display: update nv1x stutter latencies
authorJun Lei <jun.lei@amd.com>
Thu, 3 Sep 2020 20:17:46 +0000 (16:17 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Tue, 15 Sep 2020 22:24:55 +0000 (18:24 -0400)
[why]
Recent characterization shows increased stutter latencies on some SKUs,
leading to underflow.

[how]
Update SOC params to account for this worst case latency.

Signed-off-by: Jun Lei <jun.lei@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c

index 9140b3f..f31f48d 100644 (file)
@@ -409,8 +409,8 @@ static struct _vcs_dpi_soc_bounding_box_st dcn2_0_nv14_soc = {
                        },
                },
        .num_states = 5,
-       .sr_exit_time_us = 8.6,
-       .sr_enter_plus_exit_time_us = 10.9,
+       .sr_exit_time_us = 11.6,
+       .sr_enter_plus_exit_time_us = 13.9,
        .urgent_latency_us = 4.0,
        .urgent_latency_pixel_data_only_us = 4.0,
        .urgent_latency_pixel_mixed_with_vm_data_us = 4.0,