From: Dmytro Laktyushkin <Dmytro.Laktyushkin@xxxxxxx>
[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: Charlene Liu <Charlene.Liu@xxxxxxx>
Acked-by: Qingqing Zhuo <qingqing.zhuo@xxxxxxx>
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@xxxxxxx>
Reviewed-by: Harry Wentland <harry.wentland@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dcn315/dcn315_resource.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn315/dcn315_resource.c b/drivers/gpu/drm/amd/display/dc/dcn315/dcn315_resource.c
index 406492655dee..f22158bb4b13 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn315/dcn315_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn315/dcn315_resource.c
@@ -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;
}
--
2.25.1
