dm_test_fill...clamps_depth(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 NAME 🌸

Besties, welcome to dm_test_fill...clamps_depth, page 9 of the Kernel API Manual — yes the header literally says dm_test_fill...clamps_depth(9) twice and we love a symmetrical moment ✨

The actual star of the show is dm_test_fill_stream_hdmi_ep_clamps_depth — a test that checks the HDMI TMDS depth clamp actually gets applied. That's the whole vibe. Slay. 💅

✨ SYNOPSIS ✨

void dm_test_fill_stream_hdmi_ep_clamps_depth (struct kunit *test );

💅 ARGUMENTS 💅

  • test — the KUnit test context, aka the little bag of state the test carries around with it. Main character energy, honestly. 🫶

🎀 DESCRIPTION 🎀

okay so picture this: when is_hdmi_ep is set, the colour depth gets clamped down to whatever the sink's max TMDS clock actually allows. So if you come in asking for a 10bpc request that goes over the limit? It gets reduced to 8bpc. No cap, no drama, just math doing its thing. 🌈

🦋 SEE ALSO 🦋

The kernel file this lives in is ./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_connector_test.c — one file, absolute icon. 👑

And here's the full squad, all 238 of them, in the exact order they showed up to the group chat (no one got left on read, I promise 💖):

okay that's the whole page bestie 💖 it came from ./drivers/gpu/drm/amd/display/... with a date stamp of October 2026, and yeah — the footer still says dm_test_fill...clamps_depth(9) because the manual name is literally never beating the repetition allegations. go forth and clamp that depth. periodt. 🎀✨🦋

📦 where this page comes from