kernel/linux.git/Documentation/misc-devices, branch v7.0-rc7

Merge tag 'tty-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2026-02-17T17:30:52+00:00

Pull tty / serial driver updates from Greg KH: "Here is the small amount of tty and serial driver updates for 7.0-rc1. Nothing major in here at all, just some driver updates and minor tweaks and cleanups including: - sh-sci serial driver updates - 8250 driver updates - attempt to make the tty ports have their own workqueue, but was reverted after testing found it to have problems on some platforms. This will probably come back for 7.1 after it has been reworked and resubmitted - other tiny tty driver changes All of these have been in linux-next for a while with no reported problems" * tag 'tty-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (49 commits) Revert "tty: tty_port: add workqueue to flip TTY buffer" tty: tty_port: add workqueue to flip TTY buffer serial: 8250_pci: Remove custom deprecated baud setting routine serial: 8250_omap: Remove custom deprecated baud setting routine dt-bindings: serial: renesas,scif: Document RZ/G3L SoC serial: 8250: omap: set out-of-band wakeup if wakeup pinctrl exists tty: hvc-iucv: Remove KMSG_COMPONENT macro dt-bindings: serial: google,goldfish-tty: Convert to DT schema dt-bindings: serial: sh-sci: Fold single-entry compatibles into enum serial: 8250: 8250_omap.c: Clear DMA RX running status only after DMA termination is done serial: 8250: 8250_omap.c: Add support for handling UART error conditions serial: SH_SCI: improve "DMA support" prompt serial: Kconfig: fix ordering of entries for menu display serial: 8250: fix ordering of entries for menu display serial: imx: change SERIAL_IMX_CONSOLE to bool 8250_men_mcb: drop unneeded MODULE_ALIAS serial: men_z135_uart: drop unneeded MODULE_ALIAS dt-bindings: serial: renesas,rsci: Document RZ/V2H(P) and RZ/V2N SoCs serial: rsci: Convert to FIELD_MODIFY() dt-bindings: serial: 8250: add SpacemiT K3 UART compatible ...

serial: 8250_pci: Remove custom deprecated baud setting routine

2026-01-23T16:24:55+00:00

As comments mentioned this is old (and actually deprecated) interface to set custom baud rates. This interface has limitations as it only allows to set a single opaque value called "custom_divisor". If the HW needs more complex settings (like fractional divisor) it must somehow encode this. This is horrid interface that is very driver specific and not flexible. Meanwhile Linux has established way to set free baud rate settings via BOTHER [1]. With all this being said, remove deprecated interface for good. Link: https://stackoverflow.com/questions/12646324/how-can-i-set-a-custom-baud-rate-on-linux [1] Signed-off-by: Andy Shevchenko Link: https://patch.msgid.link/20260122102349.2395423-3-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman

docs: fix PPR for AMD EPYC broken link

2026-01-05T14:33:10+00:00

As 'AMD Documentation Hub' [1] announced: "All technical documentation, including for AMD EPYC™ processors ..., and more is now hosted on the AMD Technical Information Portal (TIP) [2]". By searching the No.55898, update the new URL. [1] https://www.amd.com/en/search/documentation/hub.html [2] https://docs.amd.com/ Signed-off-by: Haiyue Wang Acked-by: Bagas Sanjaya Link: https://patch.msgid.link/20251230133101.14362-1-haiyuewa@163.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

Documentation: tps6594-pfsm: Fix macro cross-reference syntax

2025-11-10T19:54:49+00:00

C macro references are erroneously written using :c:macro:: (note the double colon). This causes the references to be outputted as combination of verbatim roles and italicized names instead. Correct the syntax. Fixes: dce548889650c1 ("Documentation: Add TI TPS6594 PFSM") Signed-off-by: Bagas Sanjaya Reviewed-by: Randy Dunlap Tested-by: Randy Dunlap Signed-off-by: Jonathan Corbet Message-ID: <20251104041812.31402-4-bagasdotme@gmail.com>

Documentation: mrvl-cn10k-dpi: Fix macro cross-reference syntax

2025-11-10T19:54:49+00:00

C macro references are erroneously written using :c:macro:: (note the double colon). This causes the references to be outputted as combination of verbatim roles and italicized names instead. Correct the syntax. Fixes: 5f67eef6dff394 ("misc: mrvl-cn10k-dpi: add Octeon CN10K DPI administrative driver") Signed-off-by: Bagas Sanjaya Reviewed-by: Randy Dunlap Tested-by: Randy Dunlap Signed-off-by: Jonathan Corbet Message-ID: <20251104041812.31402-3-bagasdotme@gmail.com>

Documentation: amd-sbi: Wrap miscdevice listing snippet in literal code block

2025-11-10T19:54:49+00:00

Device file listing (ls output) is shown as long-running paragraph instead. Wrap it in literal code block. Fixes: 4d95514d14e874 ("misc: amd-sbi: Add document for AMD SB IOCTL description") Signed-off-by: Bagas Sanjaya Reviewed-by: Randy Dunlap Tested-by: Randy Dunlap Signed-off-by: Jonathan Corbet Message-ID: <20251104041812.31402-2-bagasdotme@gmail.com>

Documentation: uacce: Add explicit title

2025-11-05T18:31:05+00:00

Uacce docs' sections are listed in misc-devices toctree instead due to lack of explicit docs title. Add it to clean up the toctree. Reviewed-by: Randy Dunlap Tested-by: Randy Dunlap Signed-off-by: Bagas Sanjaya Signed-off-by: Jonathan Corbet Message-ID: <20251103093817.52764-2-bagasdotme@gmail.com>

misc: amd-sbi: Add document for AMD SB IOCTL description

2025-05-21T12:44:41+00:00

- This document provides AMD side band IOCTL description defined for APML and its usage. Multiple AMD custom protocols defined for side band system management uses this IOCTL. User space C-APIs are made available by esmi_oob_library [1], which is provided by the E-SMS project [2]. Link: https://github.com/amd/esmi_oob_library [1] Link: https://www.amd.com/en/developer/e-sms.html [2] Reviewed-by: Naveen Krishna Chatradhi Signed-off-by: Akshay Gupta Link: https://lore.kernel.org/r/20250428063034.2145566-11-akshay.gupta@amd.com Signed-off-by: Greg Kroah-Hartman

misc: amd-sbi: Add support for AMD_SBI IOCTL

2025-05-21T12:44:40+00:00

The present sbrmi module only support reporting power via hwmon. However, AMD data center range of processors support various system management functionality using custom protocols defined in Advanced Platform Management Link (APML) specification. Register a miscdevice, which creates a device /dev/sbrmiX with an IOCTL interface for the user space to invoke the APML Mailbox protocol, which is already defined in sbrmi_mailbox_xfer(). The APML protocols depend on a set of RMI registers. Having an IOCTL as a single entry point will help in providing synchronization among these protocols as multiple transactions on RMI register set may create race condition. Support for other protocols will be added in subsequent patches. APML mailbox protocol returns additional error codes written by SMU firmware in the out-bound register 0x37. These errors include, invalid core, message not supported over platform and others. This additional error codes can be used to provide more details to user space. Open-sourced and widely used https://github.com/amd/esmi_oob_library will continue to provide user-space programmable API. Reviewed-by: Naveen Krishna Chatradhi Signed-off-by: Akshay Gupta Link: https://lore.kernel.org/r/20250428063034.2145566-7-akshay.gupta@amd.com Signed-off-by: Greg Kroah-Hartman

misc: lis3lv02d: Fix correct sysfs directory path for lis3lv02d

2025-05-21T12:44:12+00:00

The lis3lv02d driver does not create a platform device anymore. It was recently changed to use a faux device instead. Therefore the sysfs path has changed from /sys/devices/platform/lis3lv02d to /sys/devices/faux/lis3lv02d. Fixes: 3b18ccb5472b ("misc: lis3lv02d: convert to use faux_device") Signed-off-by: Roxana Nicolescu Link: https://lore.kernel.org/r/20250506110002.36477-1-nicolescu.roxana@protonmail.com Signed-off-by: Greg Kroah-Hartman