intel_cdclk_can_cd2x_update(9)

💅 NAME 💅

okay so bestie, this is the intel_cdclk_can_cd2x_update(9) page from the Kernel API Manual, and it's here to answer one very specific question: intel_cdclk_can_cd2x_update — Determine if changing between the two CDCLK configurations requires only a cd2x divider update. That's the whole assignment, no cap 💖

✨ highkey iconic little helper, fr fr.

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🌸 SYNOPSIS 🌸

bool intel_cdclk_can_cd2x_update (struct intel_display *display , const
       struct intel_cdclk_config *a , const struct intel_cdclk_config *b );

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🎀 ARGUMENTS 🎀

• display — display instance. yes bestie, the display thing itself 💅
• a — first CDCLK configuration. that's config number one 🦋
• b — second CDCLK configuration. and that's config number two ✨

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⭐ RETURN ⭐

True if changing between the two CDCLK configurations can be done with just a cd2x divider update, false if not.

so yeah: true means “divider update only, we move,” and false means “nope, not just that.” That's the vibe check 😌💅

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🦋 SEE ALSO 🦋

the kernel file is ./drivers/gpu/drm/i915/display/intel_cdclk.c — go look if you're feeling nosy 👑

• CDCLK / RAWCLK(9)
• intel_cdclk_init_hw(9)
• intel_cdclk_uninit_hw(9)
• intel_cdclk_clock_changed(9)
• intel_cdclk_changed(9)
• intel_set_cdclk_pre_plane_update(9)
• intel_set_cdclk_post_plane_update(9)
• intel_update_max_cdclk(9)
• intel_update_cdclk(9)
• intel_read_rawclk(9)
• intel_init_cdclk_hooks(9)

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mwah 💋 this little page lives in ./drivers/gpu/drm/i915/display, dated October 2026, and it's the intel_cdclk_can_cd2x_update(9) manual page. periodt 💜