diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.19.8/1008-drm-amd-display-Add-debug-option-to-force-fclk-reque.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.19.8/1008-drm-amd-display-Add-debug-option-to-force-fclk-reque.patch | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/1008-drm-amd-display-Add-debug-option-to-force-fclk-reque.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/1008-drm-amd-display-Add-debug-option-to-force-fclk-reque.patch new file mode 100644 index 00000000..b886e751 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/1008-drm-amd-display-Add-debug-option-to-force-fclk-reque.patch @@ -0,0 +1,59 @@ +From 393bc9a42fe47f1f03aab0fa6dd2a21425136900 Mon Sep 17 00:00:00 2001 +From: Hugo Hu <hugo.hu@amd.com> +Date: Wed, 21 Nov 2018 14:34:10 +0800 +Subject: [PATCH 1008/2940] drm/amd/display: Add debug option to force fclk + request + +[Why] +So that we can adjust fclk for debugging purposes. + +[How] +Add option to force adjust fclk request to pplib. + +Signed-off-by: Hugo Hu <hugo.hu@amd.com> +Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> +Acked-by: Leo Li <sunpeng.li@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +Signed-off-by: Chaudhary Amit Kumar <Chaudharyamit.Kumar@amd.com> +--- + drivers/gpu/drm/amd/display/dc/dc.h | 1 + + drivers/gpu/drm/amd/display/dc/dcn10/dcn10_clk_mgr.c | 4 ++++ + 2 files changed, 5 insertions(+) + +diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h +index d0d67d4429f7..61481e4e5144 100644 +--- a/drivers/gpu/drm/amd/display/dc/dc.h ++++ b/drivers/gpu/drm/amd/display/dc/dc.h +@@ -255,6 +255,7 @@ struct dc_debug_options { + bool scl_reset_length10; + bool hdmi20_disable; + bool skip_detection_link_training; ++ unsigned int force_fclk_khz; + }; + + struct dc_debug_data { +diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_clk_mgr.c +index da2703354b8d..d4824a1b327b 100644 +--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_clk_mgr.c ++++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_clk_mgr.c +@@ -200,6 +200,7 @@ static void dcn1_update_clocks(struct clk_mgr *clk_mgr, + bool safe_to_lower) + { + struct dc *dc = clk_mgr->ctx->dc; ++ struct dc_debug_options *debug = &dc->debug; + struct dc_clocks *new_clocks = &context->bw.dcn.clk; + struct pp_smu_display_requirement_rv *smu_req_cur = + &dc->res_pool->pp_smu_req; +@@ -243,6 +244,9 @@ static void dcn1_update_clocks(struct clk_mgr *clk_mgr, + } + + // F Clock ++ if (debug->force_fclk_khz != 0) ++ new_clocks->fclk_khz = debug->force_fclk_khz; ++ + if (should_set_clock(safe_to_lower, new_clocks->fclk_khz, clk_mgr->clks.fclk_khz)) { + clk_mgr->clks.fclk_khz = new_clocks->fclk_khz; + smu_req.hard_min_fclk_khz = new_clocks->fclk_khz; +-- +2.17.1 + |