kernel/drivers/tty/serial/Kconfig, branch master

serial: SH_SCI: improve "DMA support" prompt

2026-01-16T13:25:16Z

Having a prompt of "DMA support" suddenly appear during a "make oldconfig" can be confusing. Add a little helpful text to the prompt message. Fixes: 73a19e4c0301 ("serial: sh-sci: Add DMA support.") Signed-off-by: Randy Dunlap Reviewed-by: Geert Uytterhoeven Link: https://patch.msgid.link/20260110232643.3533351-5-rdunlap@infradead.org Signed-off-by: Greg Kroah-Hartman

serial: Kconfig: fix ordering of entries for menu display

2026-01-16T13:25:16Z

Improve the "Non-8250 serial port support" menu so that entries in it are displayed in a better order (_CONSOLE after its driver) and so that intervening symbols don't break up the dependency list, allowing menu entries to be displayed with proper indentation. Signed-off-by: Randy Dunlap Link: https://patch.msgid.link/20260110232643.3533351-4-rdunlap@infradead.org Signed-off-by: Greg Kroah-Hartman

serial: imx: change SERIAL_IMX_CONSOLE to bool

2026-01-16T13:25:15Z

SERIAL_IMX_CONSOLE is a build option for the imx driver (SERIAL_IMX). It does not build a separate console driver file, so it can't be built as a module since it isn't built at all. Change the Kconfig symbol from tristate to bool and update the help text accordingly. Fixes: 0db4f9b91c86 ("tty: serial: imx: enable imx serial console port as module") Signed-off-by: Randy Dunlap Link: https://patch.msgid.link/20260110232643.3533351-2-rdunlap@infradead.org Signed-off-by: Greg Kroah-Hartman

serial: sc16is7xx: Kconfig: allow building with COMPILE_TEST

2025-10-28T14:25:41Z

Add COMPILE_TEST as an option to allow test building the driver. Suggested-by: Geert Uytterhoeven Link: https://lore.kernel.org/all/20240604083159.d984dd08741396ea4ca46418@hugovil.com/raw Signed-off-by: Hugo Villeneuve Link: https://patch.msgid.link/20251027142957.1032073-11-hugo@hugovil.com Signed-off-by: Greg Kroah-Hartman

Merge tag 'tty-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2025-10-04T22:57:44Z

Pull tty/serial updates from Greg KH: "Here are some small updates for tty/serial drivers for 6.18-rc1. Not many changes overall, just the usual: - abi cleanups and reworking of the tty functions by Jiri by adding console lock guard logic - 8250_platform driver updates - qcom-geni driver updates - other minor serial driver updates - some more vt escape codes added All of these have been in linux-next for a while with no reported issues" * tag 'tty-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (43 commits) tty: serial: fix help message for SERIAL_CPM serial: 8250: omap: Support wakeup pinctrl state on suspend dt-bindings: serial: 8250_omap: Add wakeup pinctrl state serial: max310x: improve interrupt handling vt: move vc_saved_screen to within tty allocated judgment Revert "m68k: make HPDCA and HPAPCI bools" tty: remove redundant condition checks tty/vt: Add missing return value for VT_RESIZE in vt_ioctl() vt: remove redundant check on vc_mode in con_font_set() serial: qcom-geni: Add DFS clock mode support to GENI UART driver m68k: make HPDCA and HPAPCI bools tty: n_gsm: Don't block input queue by waiting MSC serial: qcom-geni: Fix off-by-one error in ida_alloc_range() serdev: Drop dev_pm_domain_detach() call serial: sc16is7xx: drop redundant conversion to bool vt: add support for smput/rmput escape codes serial: stm32: allow selecting console when the driver is module serial: 8250_core: fix coding style issue tty: serial: Modify the use of dev_err_probe() s390/char/con3270: use tty_port_tty guard() ...

tty: serial: fix help message for SERIAL_CPM

2025-09-17T11:11:30Z

Running checkpatch reported error extra whitespace at the end of help message for SERIAL_CPM menu entry Signed-off-by: Arturs Artamonovs Signed-off-by: Greg Kroah-Hartman

tty: serial: atmel: make it selectable for ARCH_MICROCHIP

2025-09-09T08:34:21Z

LAN969x uses the Atmel USART serial, so make it selectable for ARCH_MICROCHIP to avoid needing to update depends in future if other Microchip SoC-s use it as well. Signed-off-by: Robert Marko Acked-by: Greg Kroah-Hartman Acked-by: Daniel Machon Signed-off-by: Nicolas Ferre

serial: stm32: allow selecting console when the driver is module

2025-09-06T13:48:27Z

Console can be enabled on the UART compile as module. Change dependency to allow console mode when the driver is built as module. Fixes: 48a6092fb41fa ("serial: stm32-usart: Add STM32 USART Driver") Cc: stable@vger.kernel.org Signed-off-by: Raphael Gallais-Pou Link: https://lore.kernel.org/r/20250822141923.61133-1-raphael.gallais-pou@foss.st.com Signed-off-by: Greg Kroah-Hartman

serial: qcom-geni: Make UART port count configurable via Kconfig

2025-08-14T09:59:29Z

Replace the hardcoded GENI_UART_PORTS macro with a new Kconfig option SERIAL_QCOM_GENI_UART_PORTS to allow platforms to configure the maximum number of UART ports supported by the driver at build time. This improves flexibility for platforms that require more than the previously fixed number of UART ports, and avoids unnecessary allocation for unused ports. Signed-off-by: Zong Jiang Link: https://lore.kernel.org/r/20250812054819.3748649-3-quic_zongjian@quicinc.com Signed-off-by: Greg Kroah-Hartman

serial: sh-sci: Add support for RZ/T2H SCI

2025-07-09T11:45:30Z

Define a new RSCI port type, and the RSCI 32 bits registers set. The RZ/T2H SCI has a a fifo, and a quite different set of registers from the original SH SCI ones. DMA is not supported yet. Signed-off-by: Thierry Bultel Signed-off-by: Lad Prabhakar Reviewed-by: Wolfram Sang Reviewed-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/20250630202323.279809-6-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Greg Kroah-Hartman