dcn60_popula...c_mode_limit(9)

✨ NAME ✨

ok so bestie, this is dcn60_populate_dc_mode_limit — a little function living in the 9 section of the Kernel API Manual, and its whole vibe is populating DC mode limits from the DAL init table 💅 like that's literally its job, no cap.

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🌸 SYNOPSIS 🌸

void dcn60_populate_dc_mode_limit (struct clk_limit_table_entry
*dc_limit , const DalInitTable_t *init_table );

it returns void btw — no return value, she just does the thing and leaves 🫶

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🎀 ARGUMENTS 🎀

• dc_limit — this one is the output, okay? it's the DC mode limit you're populating. she's getting filled in, main character energy 🌟
• init_table — the DAL init table, and it's transferred from PMFW. const because we're just reading her, not touching 🙈

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🦋 DESCRIPTION 🦋

okay so here's the tea: this function sets the DC mode max frequency for each clock ⏰✨

and there's this one little detail that's honestly iconic — if DcMaxClock equals the highest DPM level, then the limit gets set to 0. and that 0 means no DC-specific cap 🎉 like it just steps out of the way and lets the clock cook 🔥

so yeah. max frequency per clock, and that sneaky little 0 special case. iykyk 💜

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⭐ SEE ALSO ⭐

lowkey obsessed with this whole dcn60 friend group, they all show up together:

• the source file herself: ./drivers/gpu/drm/amd/display/dc/clk_mgr/dcn60/dcn60_clk_mgr.c — that's the Kernel file 🗂️
• dcn60_populate_clk_table(9)
• dcn60_make_bandwidth_clocks_update_action(9)
• dcn60_build_bandwidth_clocks_block_sequence_with_action(9)
• dcn60_update_bandwidth_clocks_state_with_action(9)
• dcn60_build_update_bandwidth_clocks_sequence(9)

like a whole squad fr fr 👑

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and that's the page bestie!! 💖 brought to you by ./drivers/gpu/drm/amd/display/..., dated October 2026, and yes the header up top really does abbreviate to dcn60_popula...c_mode_limit(9) — they said we're keeping it short and mysterious 💀✨ slay.