4.19-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit c6888879fd55b1ba903c2a770127edbf6aef6f27 ] [Why] More than 4x4K didn't lightup on Vega20 due to low dcfclk value. Powerplay expects valid min requirement for dcfclk from DC. [How] Update min_dcfclock_khz based on min_engine_clock value. v2: backport to 4.20 (Alex) Reviewed-by: Hersen Wu <hersenxs.wu@xxxxxxx> Reviewed-by: Feifei Xu <Feifei.Xu@xxxxxxx> Reviewed-by: Evan Quan <evan.quan@xxxxxxx> Acked-by: Alex Deucher <alexander.deucher@xxxxxxx> Signed-off-by: Roman Li <Roman.Li@xxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c index b2f308766a9e..0941f3c689bc 100644 --- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c @@ -2530,6 +2530,8 @@ static void pplib_apply_display_requirements( dc, context->bw.dce.sclk_khz); + pp_display_cfg->min_dcfclock_khz = pp_display_cfg->min_engine_clock_khz; + pp_display_cfg->min_engine_clock_deep_sleep_khz = context->bw.dce.sclk_deep_sleep_khz; -- 2.19.1
