From: Alvin Lee Alvin.Lee2@amd.com
[ Upstream commit f6015da7f2410109bd2ccd2e2828f26185aeb81d ]
[Description] - When transitioning FRL / DP2 is not required, we will always request DTBCLK = 0Mhz, but PMFW returns the min freq - This causes us to make DTBCLK requests every time we call optimize after transitioning from FRL to non-FRL - If DTBCLK is not required, request the min instead (then we only need to make 1 extra request at boot time) - Also when programming PIPE_DTO_SRC_SEL, don't programming for DP first, just programming once for the required selection (programming DP on an HDMI connection then switching back causes corruption)
Reviewed-by: Dillon Varone Dillon.Varone@amd.com Acked-by: Jasdeep Dhillon jdhillon@amd.com Signed-off-by: Alvin Lee Alvin.Lee2@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- .../gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c | 2 +- drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dccg.c | 6 +----- 2 files changed, 2 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c index 6f77d8e538ab..9eb9fe5b8d2c 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c @@ -438,7 +438,7 @@ static void dcn32_update_clocks(struct clk_mgr *clk_mgr_base, }
if (!new_clocks->dtbclk_en) { - new_clocks->ref_dtbclk_khz = 0; + new_clocks->ref_dtbclk_khz = clk_mgr_base->bw_params->clk_table.entries[0].dtbclk_mhz * 1000; }
/* clock limits are received with MHz precision, divide by 1000 to prevent setting clocks at every call */ diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dccg.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dccg.c index df4f25119142..e4472c6be6c3 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dccg.c +++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_dccg.c @@ -225,11 +225,7 @@ static void dccg32_set_dtbclk_dto( } else { REG_UPDATE_2(OTG_PIXEL_RATE_CNTL[params->otg_inst], DTBCLK_DTO_ENABLE[params->otg_inst], 0, - PIPE_DTO_SRC_SEL[params->otg_inst], 1); - if (params->is_hdmi) - REG_UPDATE(OTG_PIXEL_RATE_CNTL[params->otg_inst], - PIPE_DTO_SRC_SEL[params->otg_inst], 0); - + PIPE_DTO_SRC_SEL[params->otg_inst], params->is_hdmi ? 0 : 1); REG_WRITE(DTBCLK_DTO_MODULO[params->otg_inst], 0); REG_WRITE(DTBCLK_DTO_PHASE[params->otg_inst], 0); }