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    Subject[PATCH 6.0 755/862] drm/amd/display: Fix urgent latency override for DCN32/DCN321
    Date
    From: George Shen <george.shen@amd.com>

    [ Upstream commit e7f2f4cd67443ce308480ca461806fcc3456e0ba ]

    [Why]
    The urgent latency override is useful when debugging issues
    relating to underflow.

    Current overridden variable is not correct and has no effect
    on DCN3.2 and DCN3.21 DML calculations.

    [How]
    For DCN3.2 and DCN3.21, override the correct urgent latency
    variable when bounding box override is present.

    Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
    Reviewed-by: Nevenko Stupar <Nevenko.Stupar@amd.com>
    Acked-by: Wayne Lin <wayne.lin@amd.com>
    Signed-off-by: George Shen <george.shen@amd.com>
    Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c | 1 +
    drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c | 1 +
    2 files changed, 2 insertions(+)

    diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
    index e573e706430d..b9d3a4000c3d 100644
    --- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
    +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
    @@ -2199,6 +2199,7 @@ void dcn32_update_bw_bounding_box_fpu(struct dc *dc, struct clk_bw_params *bw_pa
    if ((int)(dcn3_2_soc.urgent_latency_us * 1000) != dc->bb_overrides.urgent_latency_ns
    && dc->bb_overrides.urgent_latency_ns) {
    dcn3_2_soc.urgent_latency_us = dc->bb_overrides.urgent_latency_ns / 1000.0;
    + dcn3_2_soc.urgent_latency_pixel_data_only_us = dc->bb_overrides.urgent_latency_ns / 1000.0;
    }

    if ((int)(dcn3_2_soc.dram_clock_change_latency_us * 1000)
    diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c
    index c87091683b5d..b6369758b491 100644
    --- a/drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c
    +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c
    @@ -489,6 +489,7 @@ void dcn321_update_bw_bounding_box_fpu(struct dc *dc, struct clk_bw_params *bw_p
    if ((int)(dcn3_21_soc.urgent_latency_us * 1000) != dc->bb_overrides.urgent_latency_ns
    && dc->bb_overrides.urgent_latency_ns) {
    dcn3_21_soc.urgent_latency_us = dc->bb_overrides.urgent_latency_ns / 1000.0;
    + dcn3_21_soc.urgent_latency_pixel_data_only_us = dc->bb_overrides.urgent_latency_ns / 1000.0;
    }

    if ((int)(dcn3_21_soc.dram_clock_change_latency_us * 1000)
    --
    2.35.1


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