vega10_start_dpm(9)

💅 NAME 💅

vega10_start_dpm — bestie, this is the one that pokes the SMC and is like "hey girl, turn on the DPMs you actually support" ✨

(it's from the kernel API manual, vega10_start_dpm(9), if you were wondering where this whole vibe lives 🎀)

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🌸 SYNOPSIS 🌸

int vega10_start_dpm (struct pp_hwmgr *hwmgr , uint32_t bitmap );

okay so it takes two things, returns an int, and that's literally it. no cap. 🫶

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✨ ARGUMENTS ✨

• hwmgr — this is the address of the powerplay hardware manager. like, the actual address. hand it over and we're cooking 🔥
• bitmap — the bitmap for the features to enabled. yes, "to enabled." iconic grammar moment, we love her, we keep her 💅 basically it tells us which features we're flipping on.

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👑 RETURN 👑

It gives you back 0 on at least one DPM is successfully enabled. so a 0 here is a W, not an error — one DPM making it through is enough to count 🎉

lowkey important: the 0 means at least one suceeded, so don't go reading it like "everything worked perfectly," because that's not the claim bestie 😭

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🦋 SEE ALSO 🦋

The kernel file lives here, go be nosy:

./drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c

and these are the sibling functions, the whole friend group fr fr 🫶

• vega10_get_evv_voltages(9)
• vega10_patch_with_vdd_leakage(9)
• vega10_patch_lookup_table_with_leakage(9)
• vega10_trim_voltage_table(9)
• vega10_construct_voltage_tables(9)
• vega10_populate_single_gfx_level(9)
• vega10_populate_single_soc_level(9)
• vega10_populate_all_graphic_levels(9)
• vega10_populate_all_memory_levels(9)
• vega10_init_smc_table(9)

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and that's the whole page, no notes 🌈

cute lil sign-off: this one ships from ./drivers/gpu/drm/amd/pm/power... (yes the source line gets truncated, she's mysterious like that 🧚) dated October 2026, and the page is literally called vega10_start_dpm(9) — same as the top, we're consistent, we're slaying 💖