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drm/amd/display: Fallback to boot snapshot for dispclk

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From Dillon Varone
1a34999922ba6c95df6e3ba5c82624f61323f82b in linux-6.18.y/6.18.19
30d937f63bd19bbcaafa4b892eb251f8bbbf04ef in mainline linux
This commit is contained in:
jsg
2026-03-20 00:15:43 +00:00
parent 49462b4032
commit 02a30f831b
1 changed files with 5 additions and 1 deletions
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6
sys/dev/pci/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c
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@@ -68,7 +68,11 @@ void dcn401_initialize_min_clocks(struct dc *dc)
* audio corruption. Read current DISPCLK from DENTIST and request the same
* freq to ensure that the timing is valid and unchanged.
*/
clocks->dispclk_khz = dc->clk_mgr->funcs->get_dispclk_from_dentist(dc->clk_mgr);
if (dc->clk_mgr->funcs->get_dispclk_from_dentist) {
clocks->dispclk_khz = dc->clk_mgr->funcs->get_dispclk_from_dentist(dc->clk_mgr);
} else {
clocks->dispclk_khz = dc->clk_mgr->boot_snapshot.dispclk * 1000;
}
}
clocks->ref_dtbclk_khz = dc->clk_mgr->bw_params->clk_table.entries[0].dtbclk_mhz * 1000;
clocks->fclk_p_state_change_support = true;