tty layer and serial drivers · Supported

Maintainers

• M Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• M Jiri Slaby <jirislaby@kernel.org>

Paths

• F Documentation/devicetree/bindings/serial/
• F Documentation/driver-api/serial/
• F drivers/tty/
• F include/linux/selection.h
• F include/linux/serial.h
• F include/linux/serial_core.h
• F include/linux/sysrq.h
• F include/linux/tty*.h
• F include/linux/vt.h
• F include/linux/vt_*.h
• F include/uapi/linux/serial.h
• F include/uapi/linux/serial_core.h
• F include/uapi/linux/tty.h

Last 30 days

Most active threads (last 7 days)

• HOTtoday [PATCH v4 00/14] serial: 8250: add Moxa MUEx50 PCIe board support
  2026-07-29 06:06 · 14 replies in 7d · Crescent Hsieh <hidden>
• HOTtoday [PATCH 00/10] Ambarella CV75 SoC minimal bring-up
  2026-07-30 10:44 · 2 replies in 7d · Long Zhao <hidden>
• HOTtoday [PATCH 0/2] serial: qcom-geni: Convert console to nbcon and handle RX overflow
  2026-07-29 21:45 · 2 replies in 7d · Bjorn Andersson <hidden>
• DORMANTno replies [PATCH v4] serial: 8250_of: clear stuck empty-FIFO RX-timeout on LPC32xx
  2026-07-30 19:39 · 0 replies in 7d · Ryan Wilbur <hidden>
• HOTtoday [PATCH tty v11 0/2] Convert 8250 to NBCON, take 2
  2026-07-29 12:04 · 2 replies in 7d · John Ogness <john.ogness@linutronix.de>
• HOTtoday [PATCH 0/1] serial: qcom-geni: fix TX DMA buffer flush
  2026-07-29 17:41 · 1 reply in 7d · jaseg <hidden>
• WARM2d [PATCH tty v10 0/2] Convert 8250 to NBCON, take 2
  2026-07-27 14:53 · 2 replies in 7d · John Ogness <john.ogness@linutronix.de>
• DORMANTno replies [PATCH] serial: 8250_exar: use platform_device_register_full()
  2026-07-28 14:45 · 0 replies in 7d · Bartosz Golaszewski <hidden>
• WARM3d [PATCH v2 0/2] Stabilize serial line numbers on MediaTek boards
  2026-07-27 07:40 · 1 reply in 7d · Carlo Caione <hidden>
• DORMANTno replies [PATCH] serial: 8250_dma: Clear stale RX state on shutdown
  2026-07-27 06:25 · 0 replies in 7d · Cunhao Lu <hidden>

Active reviewers (last 30 days)

• Wang Zhaolong <hidden>
  5 attestations (1 Co-developed-by, 3 Reported-by, 1 Tested-by) · last on 2026-07-08
• Andy Shevchenko <hidden>
  4 attestations (2 Reviewed-by, 2 Suggested-by) · last on 2026-07-29
• Petr Mladek <pmladek@suse.com>
  3 attestations (3 Reviewed-by) · last on 2026-07-29
• <hidden>
  3 attestations (3 Reported-by) · last on 2026-07-24
• Andy Shevchenko <andriy.shevchenko@linux.intel.com>
  3 attestations (1 Reviewed-by, 2 Suggested-by) · last on 2026-07-21
• John Ogness <john.ogness@linutronix.de>
  2 attestations (1 Reviewed-by, 1 Suggested-by) · last on 2026-07-24
• Benjamin Larsson <hidden>
  2 attestations (2 Co-developed-by) · last on 2026-07-24
• Mark Brown <broonie@kernel.org>
  2 attestations (2 Reported-by) · last on 2026-07-24
• Anirudh Srinivasan <hidden>
  2 attestations (2 Reported-by) · last on 2026-07-24
• kernel test robot <hidden>
  2 attestations (2 Reported-by) · last on 2026-07-15

Recent patches

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

• DORMANTno replies [PATCH v4] serial: 8250_of: clear stuck empty-FIFO RX-timeout on LPC32xx
  2026-07-30 · Ryan Wilbur <hidden>
• HOTtoday [PATCH 08/10] serial: ambarella: add Ambarella UART driver
  2026-07-30 · Long Zhao <hidden>
• HOTtoday [PATCH 05/10] dt-bindings: serial: add Ambarella UART
  2026-07-30 · Long Zhao <hidden>
• HOTtoday [PATCH 2/2] serial: qcom-geni: Keep FIFO RX active during console TX
  2026-07-29 · Bjorn Andersson <hidden>
• HOTtoday [PATCH 1/2] serial: qcom-geni: Convert console to nbcon
  2026-07-29 · Bjorn Andersson <hidden>
• HOTtoday [PATCH 1/1] serial: qcom-geni: fix TX DMA buffer flush
  2026-07-29 · jaseg <hidden>
• HOTtoday REVIEWED: 4 (4M) [PATCH tty v11 2/2] Revert "serial: 8250: drop lockdep annotation from serial8250_clear_IER()"
  2026-07-29 · John Ogness <john.ogness@linutronix.de>
• HOTtoday [PATCH tty v11 1/2] serial: 8250: Switch to nbcon console, take 2
  2026-07-29 · John Ogness <john.ogness@linutronix.de>
• HOTtoday [PATCH v4 14/14] serial: 8250_mxpcie: implement rx_trig_bytes callbacks via MUEx50 RTL
  2026-07-29 · Crescent Hsieh <hidden>
• HOTtoday [PATCH v4 13/14] serial: 8250_mxpcie: introduce per-port private data structure
  2026-07-29 · Crescent Hsieh <hidden>
• HOTtoday [PATCH v4 12/14] serial: 8250: allow UART drivers to override rx_trig_bytes handling
  2026-07-29 · Crescent Hsieh <hidden>
• HOTtoday [PATCH v4 10/14] serial: 8250: allow low-level drivers to override break control
  2026-07-29 · Crescent Hsieh <hidden>
• HOTtoday [PATCH v4 11/14] serial: 8250_mxpcie: add break support for RS485 using MUEx50 features
  2026-07-29 · Crescent Hsieh <hidden>
• HOTtoday [PATCH v4 08/14] serial: 8250_mxpcie: speed up TX using memory-mapped FIFO window
  2026-07-29 · Crescent Hsieh <hidden>
• HOTtoday [PATCH v4 09/14] serial: 8250_mxpcie: support serial interface mode switching
  2026-07-29 · Crescent Hsieh <hidden>
• HOTtoday [PATCH v4 07/14] serial: 8250_mxpcie: speed up RX using memory-mapped FIFO window
  2026-07-29 · Crescent Hsieh <hidden>
• HOTtoday [PATCH v4 05/14] serial: 8250_mxpcie: offload XON/XOFF flow control to MUEx50 hardware
  2026-07-29 · Crescent Hsieh <hidden>
• HOTtoday [PATCH v4 06/14] serial: 8250_mxpcie: add custom handle_irq callback
  2026-07-29 · Crescent Hsieh <hidden>
• HOTtoday [PATCH v4 04/14] serial: 8250_mxpcie: enable automatic RTS/CTS flow control
  2026-07-29 · Crescent Hsieh <hidden>
• HOTtoday [PATCH v4 03/14] serial: 8250_mxpcie: enable enhanced mode and program FIFO trigger levels
  2026-07-29 · Crescent Hsieh <hidden>
• HOTtoday REVIEWED: 1 (0M) [PATCH v4 01/14] serial: 8250: split Moxa PCIe serial board support out of 8250_pci
  2026-07-29 · Crescent Hsieh <hidden>
• HOTtoday [PATCH v4 02/14] serial: 8250: add Moxa MUEx50 UART port type
  2026-07-29 · Crescent Hsieh <hidden>
• DORMANTno replies [PATCH] serial: 8250_exar: use platform_device_register_full()
  2026-07-28 · Bartosz Golaszewski <hidden>
• WARM2d REVIEWED: 4 (4M) [PATCH tty v10 2/2] Revert "serial: 8250: drop lockdep annotation from serial8250_clear_IER()"
  2026-07-27 · John Ogness <john.ogness@linutronix.de>
• WARM2d [PATCH tty v10 1/2] serial: 8250: Switch to nbcon console, take 2
  2026-07-27 · John Ogness <john.ogness@linutronix.de>
• WARM3d [PATCH v2 2/2] serial: 8250_mtk: honor DT serial aliases
  2026-07-27 · Carlo Caione <hidden>
• DORMANTno replies [PATCH] serial: 8250_dma: Clear stale RX state on shutdown
  2026-07-27 · Cunhao Lu <hidden>
• WARM1d [PATCH] tty: limit TCSBRKP break duration
  2026-07-27 · Xincheng Wang <hidden>
• WARM1d [PATCH v2 2/2] serial: amba-pl011: keep console clock enabled for atomic writes
  2026-07-24 · Karl Mehltretter <hidden>
• WARM1d [PATCH v2 1/2] serial: amba-pl011: unprepare console clock on unregister
  2026-07-24 · Karl Mehltretter <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.

• STALE146d REVIEWED: 9 (7M) [PATCH v4 7/7] serial: 8250_dw: Ensure BUSY is deasserted
  2026-02-03 · Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> · 1 Reviewed-by, 2 Tested-by
• STALE168d REVIEWED: 2 (0M) [PATCH v3] serial: 8250: always disable IRQ during THRE test
  2026-02-09 · Alban Bedel <hidden> · 1 Reviewed-by, 1 Tested-by
• DORMANTno replies REVIEWED: 9 (9M) [PATCH v10] tty: tty_port: add workqueue to flip TTY buffer
  2026-02-13 · Xin Zhao <hidden> · 2 Tested-by
• STALE154d REVIEWED: 5 (5M) [PATCH AUTOSEL 6.19] serial: rsci: Add set_rtrg() callback
  2026-02-19 · Sasha Levin <sashal@kernel.org> · 1 Tested-by
• STALE135d REVIEWED: 8 (7M) [PATCH v5 4/9] dt-bindings: serial: Document the graph port
  2026-02-24 · Manivannan Sadhasivam via B4 Relay <devnull+manivannan.sadhasivam.oss.qualcomm.com@kernel.org> · 2 Reviewed-by
• STALE135d REVIEWED: 1 (0M) [PATCH v5 3/9] serdev: Do not return -ENODEV from of_serdev_register_devices() if external connector is used
  2026-02-24 · Manivannan Sadhasivam via B4 Relay <devnull+manivannan.sadhasivam.oss.qualcomm.com@kernel.org> · 1 Reviewed-by
• DORMANTno replies REVIEWED: 2 (0M) [PATCH v4] serial: 8250: always disable IRQ during THRE test
  2026-02-24 · Alban Bedel <hidden> · 1 Reviewed-by, 1 Tested-by
• STALE149d REVIEWED: 2 (1M) [PATCH v2 2/3] dt-bindings: serial: amlogic,meson-uart: Add compatible string for A9
  2026-02-28 · Xianwei Zhao via B4 Relay <devnull+xianwei.zhao.amlogic.com@kernel.org> · 1 Reviewed-by, 1 Acked-by
• DORMANTno replies REVIEWED: 2 (1M) [PATCH] dt-bindings: serial: amlogic,meson-uart: Add compatible string for A9
  2026-03-03 · Xianwei Zhao via B4 Relay <devnull+xianwei.zhao.amlogic.com@kernel.org> · 1 Reviewed-by, 1 Acked-by
• DORMANTno replies REVIEWED: 7 (7M) [PATCH v2] serial: tegra: remove Kconfig dependency on APB DMA controller
  2026-03-03 · Francesco Lavra <hidden> · 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.

• STALE189d [PATCH 09/13] serial: pic32_uart: update include to use pic32.h from platform_data
  2026-01-09 · Brian Masney <bmasney@redhat.com>
• STALE189d [PATCH v3 09/14] dt-bindings: serial: Document the graph port
  2026-01-10 · Manivannan Sadhasivam via B4 Relay <devnull+manivannan.sadhasivam.oss.qualcomm.com@kernel.org>
• STALE189d [PATCH v3 08/14] serdev: Add support for swnode based driver matching and uevent/modalias
  2026-01-10 · Manivannan Sadhasivam via B4 Relay <devnull+manivannan.sadhasivam.oss.qualcomm.com@kernel.org>
• DORMANTno replies [PATCH v3] serial: 8250_pci: Fix broken RS485 for F81504/508/512
  2026-01-12 · Marnix Rijnart <hidden>
• STALE189d [PATCH v1 1/2] serial: 8250_omap: Remove custom deprecated baud setting routine
  2026-01-22 · Andy Shevchenko <andriy.shevchenko@linux.intel.com>
• STALE189d [PATCH v1 2/2] serial: 8250_pci: Remove custom deprecated baud setting routine
  2026-01-22 · Andy Shevchenko <andriy.shevchenko@linux.intel.com>
• DORMANTno replies [PATCH] vt: save/restore unicode screen buffer for alternate screen
  2026-01-27 · Nicolas Pitre <hidden>
• DORMANTno replies [PATCH] tty: serial: samsung_tty: avoid dev_dbg deadlock
  2026-01-28 · Alyssa Milburn <hidden>
• DORMANTno replies Re: [PATCH v3] serial: 8250: Fix fifo underflow on flush
  2026-01-30 · Raul E Rangel <hidden>
• DORMANTno replies [PATCH] serial: 8250: add CONFIG_SERIAL_8250_PROBE_BAUD option
  2026-02-01 · Sheng Yu <hidden>