diff options
| author | Hugo Hu <hugo.hu@amd.com> | 2018-11-21 14:34:10 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-01-14 15:04:35 -0500 |
| commit | 51ba137ef226255bb13578da13e8a9030c5ad019 (patch) | |
| tree | 4ae5df2d6289311ce9a19ba17763bb5a9f08d208 /drivers/gpu/drm/amd/display/dc | |
| parent | 987741af33e5b8ebc0e20f40e5366abebab395c2 (diff) | |
| download | linux-51ba137ef226255bb13578da13e8a9030c5ad019.tar.bz2 | |
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>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_clk_mgr.c | 4 |
2 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index b4ad48b0bff3..da08c7122497 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 54abedbf1b43..c39db5bfa7cf 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 @@ -218,6 +218,7 @@ 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; @@ -261,6 +262,9 @@ 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_mhz = new_clocks->fclk_khz / 1000; |