drivers/gpu/drm/amd/display/dc/hwss/dcn201 · keep-annotate

AMD DCN 2.01 display engine for Cyan Skillfish APUs

Display hardware support for AMD's DCN 2.01 engine, a niche variant of the Display Core Next pipeline used in the Cyan Skillfish custom APU family. This silicon shipped in limited products such as the AMD 4700S Desktop Kit that appeared at retail around 2021, repurposing salvaged console-class chips for compact desktop builds.

keep-annotate conf=0.82 last_sold=2021 deploy=low replacement=none subsystem=gpu category=graphics-display

82%

recommendation

Worth keeping but documenting as niche legacy hardware. Although the Cyan Skillfish APU family was never a mainstream product line and was last broadly available around 2021, an installed base still exists and the code is genuinely maintained upstream, with fixes and a revert landing as recently as 2026. Removing it would break working machines for no real benefit, but it should not be treated as growth hardware.

repository signals

4 files

833 source lines

15 commits, 5y

+852 / −19 lines added / removed, 5y

10 authors, 5y

monthly commits · 2021-04-21 → 2026-04-21 · 15 total · active in 9/61 months

sources

git.kernel.org
Directory had substantive upstream maintenance in 2026, indicating active support rather than retirement.
git.kernel.org
A 2026 revert touching this area shows real regression handling on current kernels, not dead code.
phoronix.com
DCN201 corresponds to AMD's DCN 2.01 display engine for Cyan Skillfish, described as a custom/niche APU display variant.
amd.com
AMD still hosts support downloads for the 4700S Desktop Kit, suggesting lingering installed-base support rather than active mainstream sales.
tomshardware.com
The 4700S Desktop Kit appeared as a 2021 retail product, a reasonable proxy for the last broadly visible commercial window of this niche hardware family.

codex reasoning notes (technical)

This is real hardware-specific amdgpu display code, not a helper-only directory. Local shell `git log` on the path showed substantive 2024-2026 work, including 2026 fix/revert traffic, so deprecation or removal would be premature. The two git.kernel.org commit URLs were constructed from commit hashes returned by shell `git log`. The Phoronix and AMD/Tom's Hardware URLs were obtained via `web` search/open/find. Evidence points to a niche custom APU family (Cyan Skillfish / related salvage products) with low present-day deployment and little sign of broad new sales by 2025, but an installed base still exists and upstream attention is current; keep it, but annotate as niche legacy-support hardware rather than growth hardware.