drivers/gpu/drm/amd/display/dc/hubbub/dcn21

AMD DCN 2.1 HUBBUB display IP helper code

Internal support code for the HUBBUB (Hub Bottom-Up Buffer) block of AMD's Display Core Next 2.1 hardware, which is the memory-arbitration and data-fetch unit inside the display engine of Renoir/Lucienne APUs (Ryzen 4000/5000-series mobile and desktop integrated graphics from around 2020).

not-a-driver conf=1.00 deploy=none replacement=none subsystem=gpu category=not-a-driver

100%

recommendation

This is not actually a driver directory; it is a helper subfolder inside the amdgpu display-core tree that implements one specific IP block (HUBBUB) for the DCN 2.1 generation. It ships only as part of the larger amdgpu driver and has no standalone lifecycle of its own.

repository signals

2 files

881 source lines

2 commits, 5y

+884 / −3 lines added / removed, 5y

2 authors, 5y

monthly commits · 2021-04-21 → 2026-04-21 · 2 total · active in 2/61 months

sources

No sources cited.

codex reasoning notes (technical)

Not a driver directory: contains AMD DCN2.1 display-core hubbub IP block support code, an internal helper subdirectory under amdgpu display code rather than a standalone kernel-bound hardware driver.