Allwinner sunxi SoC USB and MIPI D-PHY controllers
Internal USB and MIPI display PHY blocks built into Allwinner's ARM SoCs, spanning the sun4i, sun6i, sun9i, sun50i, and H6 families used in popular single-board computers like the Orange Pi and Olimex boards from the early 2010s through hardware still being sold new in 2025. These on-chip transceivers handle the analog signalling for USB 2.0/3.0 ports and MIPI DSI display panels.
recommendation
It should stay in the kernel because the hardware is still being shipped on currently sold boards, including the Orange Pi 3 LTS based on the Allwinner H6 and Olimex modules built around the A31, and the code is still actively maintained upstream — Allwinner's maintainer signed off on a treewide PHY header update as recently as 2026. Because these PHY blocks are baked into the SoC silicon, there is no alternative driver that could replace them.
repository signals
sources
- lore.kernel.org
The directory still receives upstream touch in 2026; Allwinner PHY files were included in a 2026 phy-next treewide PHY-provider header update and carried an Allwinner maintainer Acked-by.
- orangepi.org
Orange Pi 3 LTS product page shows a currently sold board using the Allwinner H6 SoC with USB 3.0/2.0, indicating ongoing new-device deployment for at least part of this driver family.
- olimex.com
Olimex lists the Allwinner A31 SoC in stock and notes MIPI DSI capability, supporting continued new-component availability for the sun6i MIPI D-PHY portion.
- linux-sunxi.org
linux-sunxi documents the A31 as an Allwinner sun6i SoC with MIPI DSI and USB host/OTG, matching hardware blocks covered by this directory.
codex reasoning notes (technical)
Local Kconfig/Makefile inspected via exec_command show four real SoC-PHY drivers: USB PHYs for sun4i/sun9i/sun50i(H6) plus sun6i MIPI D-PHY. lore_activity (MCP) on phy-sun4i-usb.c and phy-sun50i-usb3.c returned recent 2026 linux-phy activity rather than abandonment; cited lore URL came from that tool. Deployment evidence came from web.search results: Orange Pi 3 LTS product page and Olimex A31 in-stock page show new H6/A31 hardware still being sold, with linux-sunxi used as supporting hardware taxonomy. I found active maintenance evidence and no concrete removal evidence in the limited tool budget, so removal/deprecation is not justified; there is no natural replacement because these PHY blocks are SoC-specific.