mailbox api · Maintained

Maintainers

• M Jassi Brar <jassisinghbrar@gmail.com>

Paths

• F Documentation/devicetree/bindings/mailbox/
• F drivers/mailbox/
• F include/dt-bindings/mailbox/
• F include/linux/mailbox_client.h
• F include/linux/mailbox_controller.h

Last 30 days

Active reviewers (last 30 days)

• Peng Fan <peng.fan@nxp.com>
  8 attestations (8 Reviewed-by) · last on 2026-06-17
• Mathieu Poirier <mathieu.poirier@linaro.org>
  8 attestations (8 Reviewed-by) · last on 2026-06-17

Recent patches

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

• COOLING9d Re: [PATCH v3 01/10] mailbox: imx: Forward the timeout/ error in imx_mu_generic_tx()
  2026-06-18 · Peng Fan <hidden>
• COOLING9d REVIEWED: 4 (4M) [PATCH v3 08/10] mailbox: imx: Move the RXDB part of the mailbox into the threaded handler
  2026-06-17 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COOLING9d REVIEWED: 4 (4M) [PATCH v3 07/10] mailbox: imx: Move the RX part of the mailbox into the threaded handler
  2026-06-17 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COOLING9d REVIEWED: 4 (4M) [PATCH v3 09/10] mailbox: imx: Don't force-thread the primary handler
  2026-06-17 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COOLING9d REVIEWED: 4 (4M) [PATCH v3 05/10] mailbox: imx: Use channel index instead of zero in imx_mu_specific_rx()
  2026-06-17 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COOLING9d REVIEWED: 4 (4M) [PATCH v3 06/10] mailbox: imx: Start splitting the IRQ handler in primary and threaded handler
  2026-06-17 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COOLING9d REVIEWED: 4 (4M) [PATCH v3 03/10] mailbox: imx: Use devm_pm_runtime_enable()
  2026-06-17 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COOLING9d REVIEWED: 4 (4M) [PATCH v3 04/10] mailbox: imx: use devm_of_platform_populate()
  2026-06-17 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COOLING9d [PATCH v3 01/10] mailbox: imx: Forward the timeout/ error in imx_mu_generic_tx()
  2026-06-17 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COOLING9d REVIEWED: 4 (4M) [PATCH v3 02/10] mailbox: imx: Add a channel shutdown field
  2026-06-17 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COLD30d [PATCH v2 6/9] mailbox: imx: Move the RX part of the mailbox into the threaded handler
  2026-06-03 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COLD30d [PATCH v2 7/9] mailbox: imx: Move the RXDB part of the mailbox into the threaded handler
  2026-06-03 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COLD30d [PATCH v2 5/9] mailbox: imx: Start splitting the IRQ handler in primary and threaded handler
  2026-06-03 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COLD30d [PATCH v2 8/9] mailbox: imx: Don't force-thread the primary handler
  2026-06-03 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COLD30d [PATCH v2 4/9] mailbox: imx: Use channel index instead of zero in imx_mu_specific_rx()
  2026-06-03 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COLD30d [PATCH v2 2/9] mailbox: imx: Use devm_pm_runtime_enable()
  2026-06-03 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COLD30d [PATCH v2 3/9] mailbox: imx: use devm_of_platform_populate()
  2026-06-03 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COLD30d [PATCH v2 1/9] mailbox: imx: Add a channel shutdown field
  2026-06-03 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COLD36d [PATCH 4/5] mailbox: imx: Don't force-thread the primary handler
  2026-05-29 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COLD36d [PATCH 3/5] mailbox: imx: Move the RXDB part of the mailbox into the threaded handler
  2026-05-29 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COLD36d [PATCH 2/5] mailbox: imx: Move the RX part of the mailbox into the threaded handler
  2026-05-29 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COLD36d [PATCH 1/5] mailbox: imx: Start splitting the IRQ handler in primary and threaded handler
  2026-05-29 · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
• COOLING6d [PATCH v3 3/3] dt-bindings: mailbox: qcom: Add Shikra APCS compatible
  2026-05-08 · Sneh Mankad <hidden>
• COLD59d [PATCH v2 4/4] mailbox: qcom-apcs-ipc: Add Shikra APCS IPC support
  2026-05-08 · Sneh Mankad <hidden>
• COLD59d [PATCH v2 3/4] dt-bindings: mailbox: qcom: Add Shikra APCS compatible
  2026-05-08 · Sneh Mankad <hidden>
• STALE61d [PATCH 4/4] mailbox: qcom-apcs-ipc: Add Shikra APCS IPC support
  2026-04-30 · Sneh Mankad <hidden>
• STALE61d [PATCH 3/4] dt-bindings: mailbox: qcom: Add Shikra APCS compatible
  2026-04-30 · Sneh Mankad <hidden>
• STALE120d REVIEWED: 7 (7M) [PATCH v3 01/15] mailbox: Deprecate NULL mbox messages; Introduce mbox_ring_doorbell()
  2026-02-16 · Douglas Anderson <dianders@chromium.org>
• STALE101d [PATCH] mailbox: add API to query available TX queue slots
  2026-02-09 · jassisinghbrar@gmail.com
• STALE149d [PATCH v2 01/15] mailbox: Deprecate NULL mbox messages; Introduce mbox_ring_doorbell()
  2026-02-08 · Douglas Anderson <dianders@chromium.org>

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.

• COOLING9d REVIEWED: 4 (4M) [PATCH v3 02/10] mailbox: imx: Add a channel shutdown field
  2026-06-17 · Sebastian Andrzej Siewior <bigeasy@linutronix.de> · 2 Reviewed-by
• COOLING9d REVIEWED: 4 (4M) [PATCH v3 03/10] mailbox: imx: Use devm_pm_runtime_enable()
  2026-06-17 · Sebastian Andrzej Siewior <bigeasy@linutronix.de> · 2 Reviewed-by
• COOLING9d REVIEWED: 4 (4M) [PATCH v3 04/10] mailbox: imx: use devm_of_platform_populate()
  2026-06-17 · Sebastian Andrzej Siewior <bigeasy@linutronix.de> · 2 Reviewed-by
• COOLING9d REVIEWED: 4 (4M) [PATCH v3 05/10] mailbox: imx: Use channel index instead of zero in imx_mu_specific_rx()
  2026-06-17 · Sebastian Andrzej Siewior <bigeasy@linutronix.de> · 2 Reviewed-by
• COOLING9d REVIEWED: 4 (4M) [PATCH v3 06/10] mailbox: imx: Start splitting the IRQ handler in primary and threaded handler
  2026-06-17 · Sebastian Andrzej Siewior <bigeasy@linutronix.de> · 2 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.

• STALE148d [PATCH v4 1/3] mailbox: check mailbox queue is full or not
  2026-02-03 · Tanmay Shah <hidden>
• COLD59d [PATCH v2 3/4] dt-bindings: mailbox: qcom: Add Shikra APCS compatible
  2026-05-08 · Sneh Mankad <hidden>