diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2502-drm-amd-display-option-to-maximize-lb-usage.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2502-drm-amd-display-option-to-maximize-lb-usage.patch | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2502-drm-amd-display-option-to-maximize-lb-usage.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2502-drm-amd-display-option-to-maximize-lb-usage.patch new file mode 100644 index 00000000..85fc145a --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2502-drm-amd-display-option-to-maximize-lb-usage.patch @@ -0,0 +1,61 @@ +From 0462db32a239137cb433be52bb73faf4346788dd Mon Sep 17 00:00:00 2001 +From: Tony Cheng <tony.cheng@amd.com> +Date: Tue, 26 Sep 2017 01:56:00 -0400 +Subject: [PATCH 2502/4131] drm/amd/display: option to maximize lb usage + +experimental change for testing if max line buffer result in better stutter efficiency + +for 1080p, LB can hold up to 9 line at 10bpcc, potentially add 10 line time of +latency hiding. + +Signed-off-by: Tony Cheng <tony.cheng@amd.com> +Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com> +Acked-by: Harry Wentland <Harry.Wentland@amd.com> +--- + drivers/gpu/drm/amd/display/dc/dc.h | 8 ++++++-- + drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c | 3 +++ + 2 files changed, 9 insertions(+), 2 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h +index 4899465..b60f491 100644 +--- a/drivers/gpu/drm/amd/display/dc/dc.h ++++ b/drivers/gpu/drm/amd/display/dc/dc.h +@@ -181,15 +181,19 @@ struct dc_debug { + bool timing_trace; + bool clock_trace; + bool validation_trace; ++ ++ /* stutter efficiency related */ + bool disable_stutter; ++ bool use_max_lb; + enum dcc_option disable_dcc; ++ enum pipe_split_policy pipe_split_policy; ++ bool force_single_disp_pipe_split; ++ + bool disable_dfs_bypass; + bool disable_dpp_power_gate; + bool disable_hubp_power_gate; + bool disable_pplib_wm_range; + bool use_dml_wm; +- enum pipe_split_policy pipe_split_policy; +- bool force_single_disp_pipe_split; + unsigned int min_disp_clk_khz; + int sr_exit_time_dpm0_ns; + int sr_enter_plus_exit_time_dpm0_ns; +diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c +index 82b8887..fa2ab99 100644 +--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c ++++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_dpp_dscl.c +@@ -507,6 +507,9 @@ static enum lb_memory_config find_lb_memory_config(struct dcn10_dpp *xfm, + { + enum lb_memory_config mem_cfg = LB_MEMORY_CONFIG_0; + ++ if (xfm->base.ctx->dc->debug.use_max_lb) ++ return mem_cfg; ++ + if (xfm->tf_mask->PIXEL_DEPTH) { + mem_cfg = dpp10_find_lb_memory_config(scl_data); + } +-- +2.7.4 + |