diff options
| author |   Ayush Gupta <ayugupta@amd.com> | 2023-03-16 15:57:30 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2023-03-31 11:18:54 -0400 |
| commit | 37403ced9f2873fab7f39ab4ac963bbb33fb0bc0 (patch) | |
| tree | 5c093484b78c0f62cc54d8bb93eb6c800222742c | |
| parent | drm/amd/display: Use per pipe P-State force for FPO (diff) | |
| download | linux-rng-37403ced9f2873fab7f39ab4ac963bbb33fb0bc0.tar.xz linux-rng-37403ced9f2873fab7f39ab4ac963bbb33fb0bc0.zip | |
drm/amd/display: fixed dcn30+ underflow issue
[Why]
Observing underflow on dcn30+ system config at 4k144hz
[How]
We set the UCLK hardmax on AC/DC switch if softmax is enabled
and also on boot. While booting up the UCLK Hardmax is set
to softmax before the init sequence and the init sequence
resets the hardmax to UCLK max which enables P-state switching.
Just added a conditional check to avoid setting hardmax on init.
Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Reviewed-by: Martin Leung <Martin.Leung@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Ayush Gupta <ayugupta@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c | 2 |
3 files changed, 4 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c index 586de81fc2da..d0ef23bfb9e6 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c @@ -621,7 +621,8 @@ void dcn30_init_hw(struct dc *dc) if (dc->clk_mgr->funcs->notify_wm_ranges) dc->clk_mgr->funcs->notify_wm_ranges(dc->clk_mgr); - if (dc->clk_mgr->funcs->set_hard_max_memclk) + //if softmax is enabled then hardmax will be set by a different call + if (dc->clk_mgr->funcs->set_hard_max_memclk && !dc->clk_mgr->dc_mode_softmax_enabled) dc->clk_mgr->funcs->set_hard_max_memclk(dc->clk_mgr); if (dc->res_pool->hubbub->funcs->force_pstate_change_control) diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c index 10e3cc17f71a..7ac6e69cff37 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c @@ -285,7 +285,7 @@ void dcn31_init_hw(struct dc *dc) if (dc->clk_mgr->funcs->notify_wm_ranges) dc->clk_mgr->funcs->notify_wm_ranges(dc->clk_mgr); - if (dc->clk_mgr->funcs->set_hard_max_memclk) + if (dc->clk_mgr->funcs->set_hard_max_memclk && !dc->clk_mgr->dc_mode_softmax_enabled) dc->clk_mgr->funcs->set_hard_max_memclk(dc->clk_mgr); if (dc->res_pool->hubbub->funcs->force_pstate_change_control) diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c index 5ee9c5a74ecb..b2919104ffc7 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c @@ -909,7 +909,7 @@ void dcn32_init_hw(struct dc *dc) if (dc->clk_mgr->funcs->notify_wm_ranges) dc->clk_mgr->funcs->notify_wm_ranges(dc->clk_mgr); - if (dc->clk_mgr->funcs->set_hard_max_memclk) + if (dc->clk_mgr->funcs->set_hard_max_memclk && !dc->clk_mgr->dc_mode_softmax_enabled) dc->clk_mgr->funcs->set_hard_max_memclk(dc->clk_mgr); if (dc->res_pool->hubbub->funcs->force_pstate_change_control) |