xe_guc_pc_get_max_freq(9)

✨ xe_guc_pc_get_max_freq(9) ✨

okay bestie so we're in the Kernel API Manual today and this one's a little cutie — it literally just reads the maximum operational frequency off the GuC PC and hands it back to you. no drama, no side effects, just vibes and a u32 💅

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🌸 SYNOPSIS 🌸

int xe_guc_pc_get_max_freq (struct xe_guc_pc *pc , u32 *freq );

like, you give it a pc and somewhere to stash the number, and it does the thing 🫶

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💖 ARGUMENTS 💖

• pc — The GuC PC. yes that's your power-conservation buddy, the main character of this whole file ✨
• freq — A pointer to a u32 where the freq value will be returned. so like, hand it an empty little box and it fills it in for you 🎀

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🦋 RETURN 🦋

• 0 on success 💚 — we ate, no crumbs.
• -EAGAIN if GuC PC not ready — and lowkey that usually means it's likely in middle of a reset, so it's not you, it's the hardware going through something 😭 give it a sec and try again, fr fr.

ngl if you get -EAGAIN do not panic, it's just the GuC PC being mid-reset. very "not me right now" energy 💀

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🌈 SEE ALSO 🌈

okay this list is long bestie, but every single one matters, no skipping 🫶

• Kernel file ./drivers/gpu/drm/xe/xe_guc_pc.c — the actual source, go read it, it's giving lore 👑
• GuC Power Conservation (PC)(9)
• xe_guc_pc_action_set_param(9)
• xe_guc_pc_action_unset_param(9)
• xe_guc_pc_get_act_freq(9)
• xe_guc_pc_get_cur_freq_fw(9)
• xe_guc_pc_get_cur_freq(9)
• xe_guc_pc_get_rp0_freq(9)
• xe_guc_pc_get_rpa_freq(9)
• xe_guc_pc_get_rpe_freq(9)
• xe_guc_pc_get_rpn_freq(9)
• xe_guc_pc_get_min_freq(9)
• xe_guc_pc_set_min_freq(9)
• xe_guc_pc_set_max_freq(9)
• xe_guc_pc_c_status(9)
• xe_guc_pc_rc6_residency(9)
• xe_guc_pc_mc6_residency(9)
• xe_guc_pc_raise_unslice(9)
• xe_guc_pc_init_early(9)
• xe_guc_pc_apply_flush_freq_limit(9)
• xe_guc_pc_remove_flush_freq_limit(9)
• xe_guc_pc_restore_stashed_freq(9)
• xe_guc_pc_start(9)
• xe_guc_pc_stop(9)
• xe_guc_pc_fini_hw(9)
• xe_guc_pc_init(9)
• xe_guc_pc_print(9)

like, the whole friend group showed up for this one 🌸 periodt.

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and that's the page diva 💜 this lil drop came out of ./drivers/gpu/drm/xe back in October 2026, and it's filed under xe_guc_pc_get_max_freq(9) in case you need to find it again. mwah 🎀✨