AMD DCE 11.0 display engine for Carrizo and Stoney Ridge APUs
Display controller hardware built into AMD's Carrizo and Stoney Ridge APUs, which shipped in mainstream and low-power notebooks and small desktops from 2015 through about 2017. It drives the on-chip outputs (HDMI, DisplayPort, eDP) on those mid-2010s laptop chips, predating the newer DCN display engines used in Ryzen-era APUs.
recommendation
Worth keeping but flagging as legacy because the Carrizo and Stoney Ridge APUs it serves have been on AMD's no-new-releases legacy support track since 2017, yet the code is still being actively touched upstream — including patches landing as recently as Linux 6.14 and late-2025 work moving analog checks into dce110_hwseq. There is no removal signal, so the sensible course is to retain the code while noting that real-world deployments are dwindling to older budget laptops.
repository signals
sources
- spinics.net
Upstream was still carrying dce110-specific work in November 2025 ([PATCH 4/4] drm/amd/display: Move analog check to dce110_hwseq).
- spinics.net
The drm-next pull for Linux 6.14 included changes under drivers/gpu/drm/amd/display/dc/dce110, showing continued integration rather than removal.
- amd.com
AMD's A4-9120 support page identifies the product as former codename Stoney Ridge, launch date Q2 2017, and says it is on a legacy support model with no additional driver releases planned.
- ir.amd.com
AMD disclosed Carrizo in February 2015 as an upcoming mainstream APU for notebooks and low-power desktops, anchoring the family in the mid-2010s.
- amd.com
AMD's A6-9210 support page identifies former codename Stoney Ridge, launch date Q2 2016, and marks it as a legacy-supported product.
codex reasoning notes (technical)
Local shell inspection (`sed` on dc_resource.c and amdgpu_dm.c) shows DCE_VERSION_11_0 maps to FAMILY_CZ and the DM path covers CHIP_CARRIZO/CHIP_STONEY, so this directory is for Carrizo/Stoney-era display blocks, not current DCN hardware. Local shell `git -c safe.directory=... log` showed recent touches through 2026-02, so the code is still maintained. URLs were obtained via web search: spinics msg132637 and msg117799 for current upstream activity; AMD support pages for A4-9120 and A6-9210 for launch/legacy-status evidence; AMD IR Carrizo press release for initial market timing. Conclusion: hardware is legacy and low-deployment today, but there is ongoing upstream maintenance and no visible removal signal, so keep the code with legacy/low-deployment annotation rather than deprecate/remove.