From 2f72e02f2f54a3ccee7808db80ff8ae474a5fcba Mon Sep 17 00:00:00 2001 From: Muhammad Ahmed Date: Thu, 15 Feb 2024 15:37:09 -0500 Subject: [PATCH] drm/amd/display: Add debug key to allow disabling dtbclk [HOW] Add debug key to allow disabling dtbclk Reviewed-by: Charlene Liu Acked-by: Alex Hung Signed-off-by: Muhammad Ahmed Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c | 3 ++- drivers/gpu/drm/amd/display/dc/dc.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c index c378b879c76d8..c6030bed95a03 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c @@ -244,7 +244,8 @@ void dcn35_update_clocks(struct clk_mgr *clk_mgr_base, } if (clk_mgr_base->clks.dtbclk_en && !new_clocks->dtbclk_en) { - dcn35_smu_set_dtbclk(clk_mgr, false); + if (clk_mgr->base.ctx->dc->config.allow_0_dtb_clk) + dcn35_smu_set_dtbclk(clk_mgr, false); clk_mgr_base->clks.dtbclk_en = new_clocks->dtbclk_en; } /* check that we're not already in lower */ diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index ee8453bf958fb..c1d8288a08b30 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -435,6 +435,7 @@ struct dc_config { unsigned int disable_ips; unsigned int disable_ips_in_vpb; bool usb4_bw_alloc_support; + bool allow_0_dtb_clk; }; enum visual_confirm { -- 2.30.2