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drm/amd/display: un-block 8k with single dimm

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[Why]
Driver doesn't validate multi-display with scaling when OS calls DDI.
This behavior causes the validated result to be a mismatch
between some automated test cases.
To address this issue, some workaround was added that caused issues in 8k.

[How]
Since the origin issue had been root caused,
revert the previous workaround and unblock 8k with a single dimm.

Reviewed-by: Aric Cyr <aric.cyr@amd.com>
Signed-off-by: Jerry Zuo <jerry.zuo@amd.com>
Signed-off-by: Paul Hsieh <paul.hsieh@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Paul Hsieh
2024-06-20 17:09:25 +08:00
committed by Alex Deucher
parent d12b17e43a
commit fe4b8c98dd
1 changed files with 0 additions and 22 deletions
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22
drivers/gpu/drm/amd/display/dc/resource/dcn314/dcn314_resource.c
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@@ -1695,25 +1695,6 @@ static void dcn314_get_panel_config_defaults(struct dc_panel_config *panel_confi
*panel_config = panel_config_defaults;
}
static bool filter_modes_for_single_channel_workaround(struct dc *dc,
struct dc_state *context)
{
// Filter 2K@240Hz+8K@24fps above combination timing if memory only has single dimm LPDDR
if (dc->clk_mgr->bw_params->vram_type == 34 &&
dc->clk_mgr->bw_params->num_channels < 2 &&
context->stream_count > 1) {
int total_phy_pix_clk = 0;
for (int i = 0; i < context->stream_count; i++)
if (context->res_ctx.pipe_ctx[i].stream)
total_phy_pix_clk += context->res_ctx.pipe_ctx[i].stream->phy_pix_clk;
if (total_phy_pix_clk >= (1148928+826260)) //2K@240Hz+8K@24fps
return true;
}
return false;
}
bool dcn314_validate_bandwidth(struct dc *dc,
struct dc_state *context,
bool fast_validate)
@@ -1732,9 +1713,6 @@ bool dcn314_validate_bandwidth(struct dc *dc,
if (!pipes)
goto validate_fail;
if (filter_modes_for_single_channel_workaround(dc, context))
goto validate_fail;
DC_FP_START();
// do not support self refresh only
out = dcn30_internal_validate_bw(dc, context, pipes, &pipe_cnt, &vlevel, fast_validate, false);