Microchip/Microsemi VSC85xx Gigabit Ethernet PHYs
A family of Gigabit Ethernet physical-layer transceiver chips (the VSC8541, VSC8574, VSC8584 and relatives) originally from Vitesse and Microsemi, now sold by Microchip. They sit between an Ethernet MAC and the copper wire on routers, switches, and embedded boards, and several models add hardware PTP timestamping for precision time synchronization.
recommendation
It should stay in the kernel because the hardware is still actively sold by Microchip in 2025, including new radiation-tolerant VSC8541RT and VSC8574RT variants announced for space and high-reliability use. Upstream activity is healthy, with cleanup patches and PTP fixes flowing through net-next and stable trees, so the driver remains under real maintenance rather than drifting toward removal.
repository signals
sources
- lore.kernel.org
Recent upstream work continues in 2026 on this driver family (`net: phy: mscc: Drop unnecessary phydev->lock`), indicating active maintenance rather than obsolescence.
- lore.kernel.org
A 2026 stable backport fixes PTP for VSC8574/VSC8572, showing ongoing bug-fix demand in supported kernels.
- microchip.com
Microchip lists VSC8541 as `Status: In Production`, so at least part of the supported VSC85xx family is still sold new.
- microchip.com
Microchip lists VSC8584 as `Status: In Production`, showing continued availability of higher-port-count devices in the same family.
- microchip.com
Microchip still offers the EVB-VSC8541-EDS evaluation board, supporting ongoing enablement and new-design use in embedded networking.
- microchip.com
Microchip announced VSC8541RT and VSC8574RT variants in 2025 for space/high-reliability markets, reinforcing that this PHY family remains commercially relevant in niche new deployments.
codex reasoning notes (technical)
Local code inspection (`rg` on drivers/net/phy/mscc) identified this as the Microsemi/Microchip VSC85xx PHY driver family. `lore_file_timeline` on `drivers/net/phy/mscc/mscc_main.c` showed active 2026 net-next and stable traffic; cited lore URLs came directly from that MCP output. Web search on microchip.com found current product pages and evaluation-board/blog pages showing `In Production` status and 2025-era launch activity. A `lei` removal-discussion query was attempted but blocked by sandboxed daemon startup; no removal evidence appeared in the lore activity sample, so deprecation/removal is not supported.