linux-drivers/
drivers/pinctrl/qcom

Qualcomm Snapdragon and Dragonwing TLMM pin controllers

The Top-Level Mode Multiplexer (TLMM) blocks on Qualcomm Snapdragon mobile, compute, automotive, and industrial IQ-series SoCs, which decide which on-chip pins are wired to which peripheral and serve as the main GPIO controller. Found in Android phones, Snapdragon-based Windows laptops, automotive infotainment, and embedded Qualcomm platforms shipping today.

keep conf=0.97 deploy=high replacement=none subsystem=pinctrl category=platform-vendor
97%

recommendation

It should stay because this is the pin-multiplexing and GPIO layer for virtually every Qualcomm Snapdragon and IQ-series SoC, including current 2024–2025 parts like the Snapdragon 8 Elite Gen 5, X1E80100 laptop chips, and the SA8775P/QCS8300 automotive and industrial platforms. Upstream activity is heavy, with broad maintenance patches and new-SoC enablement landing into 2026, and there is no replacement subsystem for this hardware.

repository signals

80 files
83,830 source lines
233 commits, 5y
+53,343 / −8,628 lines added / removed, 5y
92 authors, 5y
monthly commits · 2021-04-21 → 2026-04-21 · 233 total · active in 56/61 months
2021 2022 2023 2024 2025 2026 2021-04: 1 commit · +1 −0 2021-05: 3 commits · +11 −12 2021-06: 6 commits · +2,404 −18 2021-07: 2 commits · +964 −32 2021-08: 0 commits · +0 −0 2021-09: 7 commits · +2,644 −26 2021-10: 6 commits · +183 −64 2021-11: 9 commits · +1,064 −37 2021-12: 2 commits · +1,699 −3 2022-01: 2 commits · +3 −2 2022-02: 4 commits · +95 −48 2022-03: 3 commits · +1,972 −8 2022-04: 7 commits · +541 −309 2022-05: 1 commit · +1 −0 2022-06: 6 commits · +984 −19 2022-07: 5 commits · +1,573 −22 2022-08: 6 commits · +501 −16 2022-09: 4 commits · +78 −2 2022-10: 6 commits · +1,440 −38 2022-11: 3 commits · +8 −5 2022-12: 3 commits · +3,089 −4 2023-01: 3 commits · +14 −8 2023-02: 6 commits · +2,682 −2 2023-03: 10 commits · +2,223 −14 2023-04: 6 commits · +80 −22 2023-05: 5 commits · +7,365 −6,533 2023-06: 8 commits · +1,191 −483 2023-07: 8 commits · +555 −19 2023-08: 5 commits · +66 −3 2023-09: 3 commits · +30 −2 2023-10: 10 commits · +397 −108 2023-11: 6 commits · +3,710 −164 2023-12: 2 commits · +1,023 −1 2024-01: 0 commits · +0 −0 2024-02: 1 commit · +1 −1 2024-03: 2 commits · +4 −0 2024-04: 2 commits · +11 −10 2024-05: 3 commits · +20 −1 2024-06: 2 commits · +247 −1 2024-07: 1 commit · +15 −12 2024-08: 2 commits · +7 −5 2024-09: 2 commits · +1,917 −0 2024-10: 6 commits · +2,836 −65 2024-11: 2 commits · +1,741 −3 2024-12: 2 commits · +1,653 −8 2025-01: 1 commit · +12 −10 2025-02: 2 commits · +646 −3 2025-03: 4 commits · +78 −30 2025-04: 8 commits · +65 −47 2025-05: 5 commits · +24 −80 2025-06: 2 commits · +66 −1 2025-07: 4 commits · +1,356 −6 2025-08: 1 commit · +1 −1 2025-09: 14 commits · +3,964 −148 2025-10: 0 commits · +0 −0 2025-11: 2 commits · +2 −2 2025-12: 0 commits · +0 −0 2026-01: 4 commits · +67 −168 2026-02: 2 commits · +3 −2 2026-03: 1 commit · +16 −0 2026-04: 0 commits · +0 −0

sources

  1. lore.kernel.org

    March 27, 2026 upstream patch touched 57 Qualcomm pinctrl files, showing broad active maintenance rather than retirement.

  2. lore.kernel.org

    February 2, 2026 RFC added new sm8750 pinctrl-related functionality, indicating ongoing enablement for new Qualcomm SoCs.

  3. qualcomm.com

    Qualcomm announced Snapdragon 8 Elite Gen 5 in September 2025 and said devices from major OEMs would launch in the coming days, evidencing continuing new-product sales in 2025.

  4. qualcomm.com

    Qualcomm introduced new industrial-grade IQ series platforms spanning IQ9/IQ8/IQ6 in late 2024, showing the vendor is still shipping current embedded/industrial SoC families relevant to this pinctrl stack.

codex reasoning notes (technical)

Not an early-exit case: this is real kernel driver code under drivers/pinctrl. Recent lore evidence came from `lore_activity` on `drivers/pinctrl/qcom/pinctrl-sm8750.c`, which returned Mar 2026 qcom-wide maintenance and Feb 2026 sm8750 enablement URLs. A directory-level `lore_file_timeline` query on `drivers/pinctrl/qcom/` returned no matches, so I treated that as a path-query limitation rather than inactivity. Qualcomm product evidence came from `web.search_query` restricted to `qualcomm.com`, which found the Sep 24 2025 Snapdragon 8 Elite Gen 5 launch page and the Oct 2024 IQ-series launch page. Local tree inspection via `rg --files drivers/pinctrl/qcom` also showed support files for current families such as `sm8750`, `sm8650`, `x1e80100`, `qcs8300`, and `sa8775p`. No sampled lore evidence suggested an upstream removal series, and there is no natural replacement driver for Qualcomm TLMM/pinctrl blocks, so the directory should be kept.