From: Wenjing Liu <wenjing.liu@xxxxxxx>
This reverts commit 6cf00f4c4d5c ("drm/amd/display: Remove pixle rate
limit for subvp")
[why]
The original commit causes a regression when subvp is applied
on ODM required 8k60hz timing. The display shows black screen
on boot. The issue can be recovered with hotplug. It also causes
MPO to fail. We will temprarily revert this commit and investigate
the root cause further.
Cc: Mario Limonciello <mario.limonciello@xxxxxxx>
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Reviewed-by: Chaitanya Dhere <chaitanya.dhere@xxxxxxx>
Reviewed-by: Martin Leung <martin.leung@xxxxxxx>
Acked-by: Wayne Lin <wayne.lin@xxxxxxx>
Signed-off-by: Wenjing Liu <wenjing.liu@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
index b49e1dc9d8ba..a0a65e099104 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
@@ -623,6 +623,7 @@ static bool dcn32_assign_subvp_pipe(struct dc *dc,
* - Not TMZ surface
*/
if (pipe->plane_state && !pipe->top_pipe && !dcn32_is_center_timing(pipe) &&
+ !(pipe->stream->timing.pix_clk_100hz / 10000 > DCN3_2_MAX_SUBVP_PIXEL_RATE_MHZ) &&
(!dcn32_is_psr_capable(pipe) || (context->stream_count == 1 && dc->caps.dmub_caps.subvp_psr)) &&
dc_state_get_pipe_subvp_type(context, pipe) == SUBVP_NONE &&
(refresh_rate < 120 || dcn32_allow_subvp_high_refresh_rate(dc, context, pipe)) &&
--
2.37.3
