dm_test_ini...pported_asic(9)

📦 version 7.3.1, in nixpkgs unstable

✨ dm_test_ini...pported_asic(9) ✨

okay so welcome to the Kernel API Manual, bestie 💖 you're in section 9 territory and this page is all about one very specific KUnit test. grab a boba, it's a short one but it's iconic 🎀

🌸 NAME 🌸

dm_test_init_microcode_unsupported_asic — the test that checks microcode init returns 0 for an unsupported ASIC 🦋

⭐ SYNOPSIS ⭐

void dm_test_init_microcode_unsupported_asic(struct kunit *test);

no cap, that's the whole signature 💅

💜 ARGUMENTS 💜

  • test — the KUnit test context. that's it. that's the argument. she's lowkey carrying the whole test 🫶

🔥 DESCRIPTION 🔥

okay so imagine an IP version that has no DMUB support whatsoever — like, the firmware department never even got the memo 🙈

for that kind of IP version, dm_init_microcode should return 0, and it should do it without requesting any firmware at all. that's the entire vibe check this test is running. stunning, honestly ✨

🎀 SEE ALSO 🎀

first up, the kernel file this whole thing lives in — literally the main character's address 🏠

  • ./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_dmub_test.c

and now the friend group 👑 — every single sibling test, in order, no skips:

ngl the entire list above is mandatory reading if you wanna understand the DMUB test suite — iykyk 💀 don't skip a single one, she's thorough 🙈

mwah, that's a wrap 💜 this little page came straight from ./drivers/gpu/drm/amd/display/... and it's dated October 2026 — so go forth, run that test, and let dm_init_microcode return 0 in peace 🌈⭐💖

📦 where this page comes from