Commit e2573d5f authored by Dmytro Laktyushkin's avatar Dmytro Laktyushkin Committed by Alex Deucher
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drm/amd/display: limit unbounded requesting to 5k 



[WHy & How]
Unbounded requesting is unsupported on pipe split modes
and this change prevents us running into such a situation
with wide modes.

Reviewed-by: default avatarCharlene Liu <Charlene.Liu@amd.com>
Acked-by: default avatarQingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: default avatarDmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 15fd09a0

drivers/gpu/drm/amd/display/dc/dcn315/dcn315_resource.c

+2 −1
Original line number Diff line number Diff line
@@ -1841,7 +1841,8 @@ static int dcn315_populate_dml_pipes_from_context( 
			dc->config.enable_4to1MPC = true;

			context->bw_ctx.dml.ip.det_buffer_size_kbytes =

					(max_usable_det / DCN3_15_CRB_SEGMENT_SIZE_KB / 4) * DCN3_15_CRB_SEGMENT_SIZE_KB;

		} else if (!is_dual_plane(pipe->plane_state->format)) {

		} else if (!is_dual_plane(pipe->plane_state->format) && pipe->plane_state->src_rect.width <= 5120) {

			/* Limit to 5k max to avoid forced pipe split when there is not enough detile for swath */

			context->bw_ctx.dml.ip.det_buffer_size_kbytes = 192;

			pipes[0].pipe.src.unbounded_req_mode = true;

		}