diff options
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dccg/dcn35/dcn35_dccg.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dccg/dcn35/dcn35_dccg.c b/drivers/gpu/drm/amd/display/dc/dccg/dcn35/dcn35_dccg.c index c899c09ea31b..e097d52956b6 100644 --- a/drivers/gpu/drm/amd/display/dc/dccg/dcn35/dcn35_dccg.c +++ b/drivers/gpu/drm/amd/display/dc/dccg/dcn35/dcn35_dccg.c @@ -1114,6 +1114,16 @@ static void dccg35_trigger_dio_fifo_resync(struct dccg *dccg) if (dispclk_rdivider_value != 0) REG_UPDATE(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_WDIVIDER, dispclk_rdivider_value); } +static void dccg35_wait_for_dentist_change_done( + struct dccg *dccg) +{ + struct dcn_dccg *dccg_dcn = TO_DCN_DCCG(dccg); + + uint32_t dentist_dispclk_value = REG_READ(DENTIST_DISPCLK_CNTL); + + REG_WRITE(DENTIST_DISPCLK_CNTL, dentist_dispclk_value); + REG_WAIT(DENTIST_DISPCLK_CNTL, DENTIST_DISPCLK_CHG_DONE, 1, 50, 2000); +} static void dcn35_set_dppclk_enable(struct dccg *dccg, uint32_t dpp_inst, uint32_t enable) @@ -1300,6 +1310,8 @@ static void dccg35_set_pixel_rate_div( BREAK_TO_DEBUGGER(); return; } + if (otg_inst < 4) + dccg35_wait_for_dentist_change_done(dccg); } static void dccg35_set_dtbclk_p_src( |