6.8-stable review patch. If anyone has any objections, please let me know.
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From: Wenjing Liu wenjing.liu@amd.com
[ Upstream commit cf8c498694a443e28dc1222f3ab94677114a4724 ]
This reverts commit 340383c734f8 ("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@amd.com Cc: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org Reviewed-by: Chaitanya Dhere chaitanya.dhere@amd.com Reviewed-by: Martin Leung martin.leung@amd.com Acked-by: Wayne Lin wayne.lin@amd.com Signed-off-by: Wenjing Liu wenjing.liu@amd.com Tested-by: Daniel Wheeler daniel.wheeler@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 b49e1dc9d8ba5..a0a65e0991041 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)) &&