linux-drivers/
drivers/leds/blink

Broadcom BCM63138 and Intel AnyWAN LGM SSO LED controllers

On-chip LED controllers built into broadband gateway and router SoCs: Broadcom's BCM63138/BCM4908/BCM68xx DSL and PON gateway processors, and Intel's Lightning Mountain (AnyWAN GRX350/GRX550) home-gateway SoCs. They drive the status, link, Wi-Fi, and activity LEDs you see on the front of consumer ISP-supplied routers and fiber/DSL modems.

keep-annotate conf=0.82 deploy=medium replacement=none subsystem=leds category=platform-vendor
82%

recommendation

Worth keeping but flagging as niche embedded hardware. Both drivers received maintenance work in 2024 and 2025, and the Intel AnyWAN GRX350/550 chips still ship in mid- and high-end carrier-supplied home gateways. Broadcom did issue a 2025 end-of-life notice for the BCM63138, so that half of the directory will gradually fade, but with active upstream care and ongoing CPE deployments there is no case for removal today.

repository signals

4 files
1,189 source lines
25 commits, 5y
+399 / −85 lines added / removed, 5y
11 authors, 5y
monthly commits · 2021-04-21 → 2026-04-21 · 25 total · active in 12/61 months
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sources

  1. lore.kernel.org

    `leds-lgm-sso.c` saw upstream work in 2025 as part of an API adaptation series, indicating the driver is maintained rather than abandoned.

  2. lore.kernel.org

    `leds-lgm-sso.c` also received a standalone fix in March 2026, showing ongoing post-2025 maintenance.

  3. lore.kernel.org

    `leds-bcm63138.c` received functional cleanup/update work in late 2024, so there is no sign of upstream removal drift for that half of the directory.

  4. mm.digikey.com

    Broadcom issued a 2025 obsolescence notice for BCM63138, so at least one covered SoC family is aging out of new sales.

  5. mouser.com

    Intel's AnyWAN GRX350/GRX550 brief describes these SoCs as for mid/high-end home gateways and routers, supporting the case for continuing niche deployments and new-ish carrier CPE designs.

codex reasoning notes (technical)

Directory inspection via shell showed two real platform LED drivers: Broadcom BCM63138-family and Intel LGM SSO. `lore_activity` on both `.c` files found recent maintenance patches and no sampled removal discussion; cited lore URLs came from that tool. `web.search_query` found Broadcom's 2025 BCM63138 EOL notice and an Intel AnyWAN GRX350/550 product brief. Net: mixed hardware age, but active upstream care and ongoing gateway/CPE deployments argue against deprecation; annotate as niche/embedded rather than remove.