Adding Support for Power Over Ethernet (PoE or IEEE Clause 33) to Linux Network Stack
summary
Adds Linux kernel PoE support with concrete patches: netlink uapi and device bindings, PSE core/bindings changes, and kernel drivers for Microchip PD692x0 and TPS23881. Implements PoE ports as regulators using the regulator API, exposes admin/state/class/voltage via netlink, and handles IEEE 802.3bt classes up to 71 W. Demo shows a camera powered over Ethernet and on/off via netlink; parts are merged, more features and chip support remain queued (DENT-funded).
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