drm_dp_downs...n_tmds_clock(9)

📦 version 7.3.1, in nixpkgs unstable

💅 NAME 💅

drm_dp_downstream_min_tmds_clock — the little function that pulls the min TMDS clock out of a downstream facing port ✨

And hey bestie, quick vibe check before we dive in: this page lives in the Kernel API Manual, and it's all about one lil helper in the DRM/DP universe 🦋

🌸 SYNOPSIS 🌸

int drm_dp_downstream_min_tmds_clock (const u8
       dpcd[DP_RECEIVER_CAP_SIZE] , const u8 port_cap[4] , const struct
       drm_edid *drm_edid );

That's the whole signature, no cap 💖 She takes three things and hands you back an int. Iconic behavior.

🎀 ARGUMENTS 🎀

  • dpcd — the DisplayPort configuration data. Your girl's main character data blob 🫶
  • port_cap — the port capabilities. Four bytes of "here's what this port can do" energy 💅
  • drm_edid — the EDID. Yes, that EDID. She's here too 🌸

⭐ RETURN ⭐

On success you get the HDMI/DVI downstream facing port min TMDS clock in kHz 🔥

But if the max TMDS clock isn't defined? You get back 0 😭 That's it. That's the answer. Zero. Not a vibe, but it's the documented one, so we respect it 💀

🦋 SEE ALSO 🦋

Okay so this list is long long, and honestly it's giving "the whole dp helpers friend group got invited to the party" 🎉 First up, the kernel file where this all lives:

  • Kernel file ./drivers/gpu/drm/display/drm_dp_helper.c

And now the gang, everybody say hi 👋

That's every single one, fr fr 🙈 Go read them all, iykyk 💜

Lowkey a whole syllabus, but you're gonna slay it 🧚

And that's the page, bestie 🎀 this one's from the Kernel API Manual, source path ./drivers/gpu/drm/display, dated October 2026 — go off, you understood the assignment 💖✨

📦 where this page comes from