diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/4792-drm-amd-display-remove-dcn1-watermark-sets-b-c-and-d.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/4792-drm-amd-display-remove-dcn1-watermark-sets-b-c-and-d.patch | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/4792-drm-amd-display-remove-dcn1-watermark-sets-b-c-and-d.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/4792-drm-amd-display-remove-dcn1-watermark-sets-b-c-and-d.patch new file mode 100644 index 00000000..a4df213b --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/4792-drm-amd-display-remove-dcn1-watermark-sets-b-c-and-d.patch @@ -0,0 +1,66 @@ +From 8745ebc0b599afc57a6c9e00ff0beca363de57de Mon Sep 17 00:00:00 2001 +From: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> +Date: Tue, 5 Jun 2018 07:19:08 -0400 +Subject: [PATCH 4792/5725] drm/amd/display: remove dcn1 watermark sets b, c + and d + +Currently dcn1 will not switch between watermark sets so we can +save time by not calculating 3 extra sets. + +Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> +Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> +Acked-by: Harry Wentland <harry.wentland@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c | 21 ++++++++++++++++++++- + 1 file changed, 20 insertions(+), 1 deletion(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c +index 8dc0773..12261fb 100644 +--- a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c ++++ b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c +@@ -505,6 +505,7 @@ static void split_stream_across_pipes( + resource_build_scaling_params(secondary_pipe); + } + ++#if 0 + static void calc_wm_sets_and_perf_params( + struct dc_state *context, + struct dcn_bw_internal_vars *v) +@@ -586,6 +587,7 @@ static void calc_wm_sets_and_perf_params( + if (v->voltage_level >= 3) + context->bw.dcn.watermarks.d = context->bw.dcn.watermarks.a; + } ++#endif + + static bool dcn_bw_apply_registry_override(struct dc *dc) + { +@@ -980,7 +982,24 @@ bool dcn_validate_bandwidth( + bw_consumed = v->fabric_and_dram_bandwidth; + + display_pipe_configuration(v); +- calc_wm_sets_and_perf_params(context, v); ++ /*calc_wm_sets_and_perf_params(context, v);*/ ++ /* Only 1 set is used by dcn since no noticeable ++ * performance improvement was measured and due to hw bug DEGVIDCN10-254 ++ */ ++ dispclkdppclkdcfclk_deep_sleep_prefetch_parameters_watermarks_and_performance_calculation(v); ++ ++ context->bw.dcn.watermarks.a.cstate_pstate.cstate_exit_ns = ++ v->stutter_exit_watermark * 1000; ++ context->bw.dcn.watermarks.a.cstate_pstate.cstate_enter_plus_exit_ns = ++ v->stutter_enter_plus_exit_watermark * 1000; ++ context->bw.dcn.watermarks.a.cstate_pstate.pstate_change_ns = ++ v->dram_clock_change_watermark * 1000; ++ context->bw.dcn.watermarks.a.pte_meta_urgent_ns = v->ptemeta_urgent_watermark * 1000; ++ context->bw.dcn.watermarks.a.urgent_ns = v->urgent_watermark * 1000; ++ context->bw.dcn.watermarks.b = context->bw.dcn.watermarks.a; ++ context->bw.dcn.watermarks.c = context->bw.dcn.watermarks.a; ++ context->bw.dcn.watermarks.d = context->bw.dcn.watermarks.a; ++ + context->bw.dcn.clk.fclk_khz = (int)(bw_consumed * 1000000 / + (ddr4_dram_factor_single_Channel * v->number_of_channels)); + if (bw_consumed == v->fabric_and_dram_bandwidth_vmin0p65) { +-- +2.7.4 + |