From 3084488a49d6d58005d6ac1b5457b3f13bad1ed3 Mon Sep 17 00:00:00 2001 From: Dmytro Laktyushkin Date: Tue, 25 Jan 2022 09:34:39 -0500 Subject: [PATCH] drm/amd/display: limit unbounded requesting to 5k Unbounded requesting is unsupported on pipe split modes and this change prevents us running into such a situation with wide modes. Reviewed-by: Charlene Liu Acked-by: Jasdeep Dhillon Signed-off-by: Dmytro Laktyushkin Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c index f9e312b..1166748 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c @@ -1842,7 +1842,8 @@ static int dcn31_populate_dml_pipes_from_context( if (is_dual_plane(pipe->plane_state->format) && pipe->plane_state->src_rect.width <= 1920 && pipe->plane_state->src_rect.height <= 1080) { dc->config.enable_4to1MPC = true; - } 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; } -- 2.7.4