subvp_subvp_admissable(9)

💅 subvp_subvp_admissable 💅

okay bestie, welcome to the Kernel API Manual ✨ this little cutie lives in the kernel API docs and she's here to answer one very specific question, so let's get into it 🫶

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✨ NAME ✨

subvp_subvp_admissable — determine if subvp + subvp config is admissible 🎀

Like, is this SubVP-on-SubVP situation actually allowed? That's the whole vibe check. 💫

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🌸 SYNOPSIS 🌸

bool subvp_subvp_admissable (struct dc *dc , struct dc_state *context );

She takes two things and gives you back a bool. Simple. Iconic. No cap. 👑

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🦋 ARGUMENTS 🦋

• dc — the current DC state, aka where we're at right now 💖
• context — the new DC state that's about to be programmed, aka the glow-up we're considering ✨

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⭐ DESCRIPTION ⭐

so here's the tea, bestie: SubVP + SubVP is admissible under the following conditions — and you have to match one of these, okay? 👇

• All SubVP pipes are < 120Hz OR
• All SubVP pipes are >= 120hz

that's it. that's the whole rule. it's giving "simple but strict" and honestly? we respect it 💅 lowercase hz in the original and all, we're keeping it exactly as-is fr fr 🙈

no mixing and matching, bestie — it's all-under-120 or all-at-least-120. pick a lane. 😭

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🔥 RETURN 🔥

True if admissible, false otherwise 🌈

(that lowercase false is canon, don't come for me 💀)

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🎀 SEE ALSO 🎀

the whole friend group, gathered here for you 🫶:

• Kernel file ./drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
• dcn32_helper_populate_phantom_dlg_params(9)
• dcn32_set_phantom_stream_timing(9)
• dcn32_get_num_free_pipes(9)
• dcn32_assign_subvp_pipe(9)
• dcn32_enough_pipes_for_subvp(9)
• subvp_subvp_schedulable(9)
• subvp_drr_schedulable(9)
• subvp_vblank_schedulable(9)
• subvp_validate_static_schedulability(9)
• dcn32_allow_subvp_high_refresh_rate(9)
• dcn32_determine_max_vratio_prefetch(9)
• dcn32_assign_fpo_vactive_candidate(9)
• dcn32_find_vactive_pipe(9)

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and that's the page, bestie!! 🧚 source: ./drivers/gpu/drm/amd/display/..., dated October 2026 — go forth and check your refresh rates responsibly 💜🍓