drm/amd/display: Add a variable to update FCLK latency

[Description]
Add a variable to update FCLK latency

Reviewed-by: Martin Leung <Martin.Leung@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 8e1e400..d73e68c 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -609,6 +609,7 @@ struct dc_bounding_box_overrides {
        int percent_of_ideal_drambw;
        int dram_clock_change_latency_ns;
        int dummy_clock_change_latency_ns;
+       int fclk_clock_change_latency_ns;
        /* This forces a hard min on the DCFCLK we use
         * for DML.  Unlike the debug option for forcing
         * DCFCLK, this override affects watermark calculations

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 6645354..f8023cf 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
@@ -2098,6 +2098,13 @@ void dcn32_update_bw_bounding_box_fpu(struct dc *dc, struct clk_bw_params *bw_pa
                                dc->bb_overrides.dram_clock_change_latency_ns / 1000.0;
                }
 
+               if ((int)(dcn3_2_soc.fclk_change_latency_us * 1000)
+                               != dc->bb_overrides.fclk_clock_change_latency_ns
+                               && dc->bb_overrides.fclk_clock_change_latency_ns) {
+                       dcn3_2_soc.fclk_change_latency_us =
+                               dc->bb_overrides.fclk_clock_change_latency_ns / 1000;
+               }
+
                if ((int)(dcn3_2_soc.dummy_pstate_latency_us * 1000)
                                != dc->bb_overrides.dummy_clock_change_latency_ns
                                && dc->bb_overrides.dummy_clock_change_latency_ns) {

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 84b4b00..c870916 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c
@@ -498,6 +498,13 @@ void dcn321_update_bw_bounding_box_fpu(struct dc *dc, struct clk_bw_params *bw_p
                                dc->bb_overrides.dram_clock_change_latency_ns / 1000.0;
                }
 
+               if ((int)(dcn3_21_soc.fclk_change_latency_us * 1000)
+                               != dc->bb_overrides.fclk_clock_change_latency_ns
+                               && dc->bb_overrides.fclk_clock_change_latency_ns) {
+                       dcn3_21_soc.fclk_change_latency_us =
+                               dc->bb_overrides.fclk_clock_change_latency_ns / 1000;
+               }
+
                if ((int)(dcn3_21_soc.dummy_pstate_latency_us * 1000)
                                != dc->bb_overrides.dummy_clock_change_latency_ns
                                && dc->bb_overrides.dummy_clock_change_latency_ns) {