dcn351_hw_block_power_down(9)

💅 dcn351_hw_block_power_down 💅

okay so this is a page from the Kernel API Manual (dcn351_hw_block_power_down(9)) and bestie it's literally the power down sequence — like the goodbye routine for a hardware block. no cap. 🎀

---

✨ NAME ✨

dcn351_hw_block_power_down — power down sequence 💤

---

🦋 SYNOPSIS 🦋

void dcn351_hw_block_power_down (struct dc *dc , struct pg_block_update
*update_state );

---

🌸 ARGUMENTS 🌸

• dc — the Current DC state, your main character struct fr 🫶
• update_state — updates the PG sequence states for the HW block, iykyk ✨

---

💖 DESCRIPTION 💖

so the following sequence describes the ON-OFF (ONO) for power down, and it goes in this exact order — don't shuffle it, this is not a playlist bestie 😭

• ONO Region 11, DCPG 19: dsc3
• ONO Region 10, DCPG 3: dchubp3, dpp3
• ONO Region 9, DCPG 18: dsc2
• ONO Region 8, DCPG 2: dchubp2, dpp2
• ONO Region 7, DCPG 17: dsc1
• ONO Region 6, DCPG 1: dchubp1, dpp1
• ONO Region 5, DCPG 16: dsc0
• ONO Region 4, DCPG 0: dchubp0, dpp0
• ONO Region 3, DCPG 25: hpo — SKIPPED. Should be kept on 🫣
• ONO Region 2, DCPG 24: mpc, opp, optc, dwb
• ONO Region 1, DCPG 23: dchubbub, dchvm, dchubbubmem — SKIPPED. PMFW will pwr dwn at IPS2 entry 💀
• ONO Region 0, DCPG 22: dccg, dio, dcio — SKIPPED. will be pwr dwn after lono timer is armed ⏰

the SKIPPED ones are genuinely skipped bestie, not me forgetting them — that's what the source says so that's what we're saying 💅

---

🔥 SEE ALSO 🔥

• Kernel file ./drivers/gpu/drm/amd/display/dc/hwss/dcn351/dcn351_hwseq.c 👑
• dcn351_hw_block_power_up(9) — the reverse glow-up ✨

---

aaaand that's the whole page! 🍓 sign-off time: this icon came from ./drivers/gpu/drm/amd/display/..., dated October 2026, and it goes out to dcn351_hw_block_power_down(9) itself — periodt. 💜🧚