drm/amd/display: Increase DP blank timeout from 30 ms to 50 ms (3af91bb1) · Commits · 戴 / test

[Why] At 24 Hz, a frame is 41.7 ms, so a 30 ms wait can (and does often) timeout. [How] Bump timeout from 30 ms to 50 ms. Signed-off-by:

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -797,10 +797,10 @@ void enc1_stream_encoder_dp_blank(
		*/
		REG_UPDATE(DP_VID_STREAM_CNTL, DP_VID_STREAM_DIS_DEFER, 2);
		/* Larger delay to wait until VBLANK - use max retry of
		* 10us*3000=30ms. This covers 16.6ms of typical 60 Hz mode +
		* 10us*5000=50ms. This covers 41.7ms of minimum 24 Hz mode +
		* a little more because we may not trust delay accuracy.
		*/
		max_retries = DP_BLANK_MAX_RETRY * 150;
		max_retries = DP_BLANK_MAX_RETRY * 250;

		/* disable DP stream */
		REG_UPDATE(DP_VID_STREAM_CNTL, DP_VID_STREAM_ENABLE, 0);