clocksource, clockevent drivers · Supported

Maintainers

• M Daniel Lezcano <daniel.lezcano@kernel.org>
• M Thomas Gleixner <tglx@kernel.org>

Paths

• F Documentation/devicetree/bindings/timer/
• F drivers/clocksource/

Last 30 days

Most active threads (last 7 days)

• HOTtoday [PATCH v14 00/15] barrier: Add smp_cond_load_{relaxed,acquire}_timeout()
  2026-07-14 07:31 · 1 reply in 7d · Ankur Arora <hidden>
• WARM3d [PATCH] clocksource: Remove redundant dev_err()/dev_err_probe()
  2026-07-13 13:08 · 0 replies in 7d · Pan Chuang <hidden>
• WARM3d [PATCH] clocksource/drivers/samsung_pwm: switch to raw_spinlock_t type
  2026-07-13 08:57 · 0 replies in 7d · Marek Szyprowski <m.szyprowski@samsung.com>
• WARM2d [PATCH] clocksource/drivers/arm_arch_timer: Workaround bcm2712 broken EL2 virtual timer
  2026-07-10 08:08 · 0 replies in 7d · Marc Zyngier <maz@kernel.org>

Active reviewers (last 30 days)

• John <hidden>
  1 attestation (1 Reported-by) · last on 2026-07-10
• Daniel Drake <hidden>
  1 attestation (1 Reported-by) · last on 2026-07-10
• Marek Szyprowski <m.szyprowski@samsung.com>
  1 attestation (1 Reported-by) · last on 2026-07-10

Recent patches

Most-recent 30 patches in this subsystem on linux-arm-kernel (capped at 30), ordered by date desc.

• HOTtoday [PATCH v14 13/15] arm64/delay: enable testing smp_cond_load_relaxed_timeout()
  2026-07-14 · Ankur Arora <hidden>
• WARM3d [PATCH] clocksource: Remove redundant dev_err()/dev_err_probe()
  2026-07-13 · Pan Chuang <hidden>
• WARM3d [PATCH] clocksource/drivers/samsung_pwm: switch to raw_spinlock_t type
  2026-07-13 · Marek Szyprowski <m.szyprowski@samsung.com>
• WARM2d [PATCH] clocksource/drivers/arm_arch_timer: Workaround bcm2712 broken EL2 virtual timer
  2026-07-10 · Marc Zyngier <maz@kernel.org>
• WARM1d [PATCH 6/7] clocksource/drivers/timer-riscv: Replace CONFIG_GENERIC_GETTIMEOFDAY ifdeffery with IS_ENABLED()
  2026-07-09 · Thomas Weißschuh <hidden>
• WARM1d [PATCH 5/7] clocksource/drivers/arm_arch_timer: Replace CONFIG_GENERIC_GETTIMEOFDAY ifdeffery with IS_ENABLED()
  2026-07-09 · Thomas Weißschuh <hidden>
• WARM1d [PATCH 4/7] clocksource/drivers/mips-gic-timer: Replace CONFIG_GENERIC_GETTIMEOFDAY ifdeffery with IS_ENABLED()
  2026-07-09 · Thomas Weißschuh <hidden>
• COOLING10d [PATCH v13 13/15] arm64/delay: enable testing smp_cond_load_relaxed_timeout()
  2026-07-02 · Ankur Arora <hidden>
• DORMANTno replies [PATCH] clocksource/drivers/exynos_mct: Fix an unexpected sign extension
  2026-06-29 · Markov Gleb <hidden>
• WARM3d Re: [PATCH] arm64: dts: broadcom: bcm2712: Remove non-functional EL2 virtual timer
  2026-06-20 · Marc Zyngier <maz@kernel.org>
• COLD17d [PATCH 2/2] clocksource/drivers/arm_arch_timer_mmio: Restore support for early init
  2026-06-10 · Stephan Gerhold <hidden>
• COLD17d [PATCH 1/2] clocksource/drivers/arm_arch_timer_mmio: Refactor for early init
  2026-06-10 · Stephan Gerhold <hidden>
• COOLING14d [PATCH v1] clocksource/drivers/timer-atmel-pit: Fix init failure cleanup
  2026-06-08 · Yuho Choi <hidden>
• COLD31d [PATCH v12 13/15] arm64/delay: enable testing smp_cond_load_relaxed_timeout()
  2026-06-08 · Ankur Arora <hidden>
• COLD15d [PATCH v3 03/17] clocksource/drivers/arm_arch_timer: Default to EL2 virtual timer when running VHE
  2026-05-23 · Marc Zyngier <maz@kernel.org>
• COLD15d REVIEWED: 7 (7M) [PATCH v3 04/17] dt-bindings: timer: arm,arch_timer: Fix requirements for interrupt description
  2026-05-23 · Marc Zyngier <maz@kernel.org>
• COLD55d [PATCH] clocksource/drivers/owl: fix refcount leak
  2026-05-21 · Alexander A. Klimov <hidden>
• COLD55d REVIEWED: 7 (7M) [PATCH v2 04/17] dt-bindings: timer: arm,arch_timer: Fix requirements for interrupt description
  2026-05-14 · Marc Zyngier <maz@kernel.org>
• COLD55d [PATCH v2 03/17] clocksource/drivers/arm_arch_timer: Default to EL2 virtual timer when running VHE
  2026-05-14 · Marc Zyngier <maz@kernel.org>
• COLD33d REVIEWED: 13 (13M) [PATCH v3] clocksource: move NXP timer selection to drivers/clocksource
  2026-05-14 · Enric Balletbo i Serra <eballetbo@kernel.org>
• STALE63d [PATCH 2/2] dt-bindings: timer: pit: add PIT node example for s32g2/3 platforms
  2026-05-14 · Khristine Andreea Barbulescu <hidden>
• STALE63d REVIEWED: 13 (13M) [PATCH v2] clocksource: move NXP timer selection to drivers/clocksource
  2026-05-13 · Enric Balletbo i Serra <eballetbo@kernel.org>
• STALE64d [PATCH RESEND] clocksource: move NXP timer selection to drivers/clocksource
  2026-05-12 · Enric Balletbo i Serra <eballetbo@kernel.org>
• COLD51d [PATCH v2 3/5] clocksource/drivers/arm_arch_timer: Drop the arch_counter_get_cnt{p,v}ct_stable() accessors
  2026-05-08 · Marc Zyngier <maz@kernel.org>
• COLD51d [PATCH v2 4/5] clocksource/drivers/arm_arch_timer: Expose a direct accessor for the virtual counter
  2026-05-08 · Marc Zyngier <maz@kernel.org>
• COLD51d [PATCH v2 2/5] clocksource/drivers/arm_arch_timer: Convert counter accessors to a static key alternative
  2026-05-08 · Marc Zyngier <maz@kernel.org>
• COLD51d [PATCH v2 1/5] clocksource/drivers/arm_arch_timer: Add a static key indicating the need for a runtime workaround
  2026-05-08 · Marc Zyngier <maz@kernel.org>
• STALE63d [PATCH 03/16] dt-bindings: timer: arm,arch_timer: Fix requirements for interrupt description
  2026-05-07 · Marc Zyngier <maz@kernel.org>
• STALE63d [PATCH 02/16] clocksource/drivers/arm_arch_timer: Default to EL2 virtual timer when running VHE
  2026-05-07 · Marc Zyngier <maz@kernel.org>
• STALE69d REVIEWED: 3 (3M) [PATCH v4 1/4] dt-bindings: timer: allwinner,sun5i-a13-hstimer: add H616 and D1
  2026-05-06 · Michal Piekos <hidden>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• STALE63d REVIEWED: 13 (13M) [PATCH v2] clocksource: move NXP timer selection to drivers/clocksource
  2026-05-13 · Enric Balletbo i Serra <eballetbo@kernel.org> · 1 Reviewed-by
• COLD33d REVIEWED: 13 (13M) [PATCH v3] clocksource: move NXP timer selection to drivers/clocksource
  2026-05-14 · Enric Balletbo i Serra <eballetbo@kernel.org> · 1 Reviewed-by

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• STALE178d [PATCH v1 4/4] clocksource/drivers/imx-tpm: Support building imx-tpm driver as module
  2026-01-19 · Zhipeng Wang <hidden>
• STALE136d [PATCH 1/5] clocksource/drivers/arm_arch_timer: Add a static key indicating the need for a runtime workaround
  2026-03-02 · Marc Zyngier <maz@kernel.org>
• STALE136d [PATCH 2/5] clocksource/drivers/arm_arch_timer: Convert counter accessors to a static key alternative
  2026-03-02 · Marc Zyngier <maz@kernel.org>
• DORMANTno replies [PATCH 3/5] clocksource/drivers/arm_arch_timer: Drop the arch_counter_get_cnt{p,v}ct_stable() accessors
  2026-03-02 · Marc Zyngier <maz@kernel.org>
• DORMANTno replies [PATCH 4/5] clocksource/drivers/arm_arch_timer: Expose a direct accessor for the virtual counter
  2026-03-02 · Marc Zyngier <maz@kernel.org>
• DORMANTno replies [PATCH] clocksource: move NXP timer selection to drivers/clocksource
  2026-03-02 · eballetbo@kernel.org
• STALE134d [PATCH v3 4/4] clocksource/drivers/imx-tpm: Support building imx-tpm driver as module
  2026-03-04 · Zhipeng Wang <hidden>
• STALE132d [PATCH v5 4/4] clocksource/drivers/imx-tpm: Support building imx-tpm driver as module
  2026-03-06 · Zhipeng Wang <hidden>
• STALE111d [PATCH v1 2/7] drivers/clocksource/rockchip: Use the TIMER_PDEV_DECLARE() macro
  2026-03-27 · Daniel Lezcano <daniel.lezcano@kernel.org>
• STALE111d [PATCH v1 5/7] clocksource/drivers/rockchip: Use the TIMER_PDEV_DECLARE() macro
  2026-03-27 · Daniel Lezcano <daniel.lezcano@kernel.org>