linux/drivers/watchdog/Kconfig, branch master

watchdog: iTCO: Drop vendor support

2026-01-18T09:55:08Z

iTCO vendor support was introduced in 2006 to support SuperMicro boards with Pentium 3 CPUs. It was extended in 2009 to support motherbords with broken BIOS (specifically Intel DG33TL). The code is long since obsolete, so let's drop support for it. Signed-off-by: Guenter Roeck Reviewed-by: Wim Van Sebroeck Signed-off-by: Wim Van Sebroeck

watchdog: loongson1: Add Loongson-2k0300 watchdog support

2025-11-15T14:28:10Z

According to the manual, the Loongson-2K0300 watchdog is similar to the Loongson-1, except for some register offsets and inconsistent register bit definitions. Separate definitions via driver_data suffice. Co-developed-by: Xiaochuang Mao Signed-off-by: Xiaochuang Mao Signed-off-by: Binbin Zhou Reviewed-by: Huacai Chen Reviewed-by: Guenter Roeck Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck

watchdog: renesas_wwdt: add driver

2025-11-15T14:19:55Z

This driver adds support for the Renesas Window Watchdog Timer (WWDT). Because it can only be setup once after boot and we cannot know if this already happened in early boot stages, it is mandated that the firmware configures the watchdog. Linux then adapts according to the given setup. Note that this watchdog only reports an overflow to the Error Control Module (ECM) and does not reset the SoC on its own. Signed-off-by: Wolfram Sang Reviewed-by: Guenter Roeck Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck

watchdog: Add Nuvoton NCT6694 WDT support

2025-09-16T13:41:57Z

This driver supports Watchdog timer functionality for NCT6694 MFD device based on USB interface. Acked-by: Guenter Roeck Signed-off-by: Ming Yu Link: https://lore.kernel.org/r/20250912091952.1169369-6-a0282524688@gmail.com Signed-off-by: Lee Jones

watchdog: Add driver for Intel OC WDT

2025-06-01T11:16:33Z

Add a driver for the Intel Over-Clocking Watchdog found in Intel Platform Controller (PCH) chipsets. This watchdog is controlled via a simple single-register interface and would otherwise be standard except for the presence of a LOCK bit that can only be set once per power cycle, needing extra handling around it. Signed-off-by: Diogo Ivo Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20250317-ivo-intel_oc_wdt-v3-1-32c396f4eefd@siemens.com Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck

watchdog: Add the Watchdog Timer for the NXP S32 platform

2025-05-24T14:57:54Z

The S32 platform has several Watchdog Timer available and tied with a CPU. The SWT0 is the only one which directly asserts the reset line, other SWT require an external setup to configure the reset behavior which is not part of this change. As a side note, in the NXP documentation, the s32g2 and s32g3 reference manuals refer the watchdog as the 'Software Timer Watchdog' where the name can be misleading as it is actually a hardware watchdog. The maximum watchdog timeout value depends on the clock feeding the SWT counter which is 32bits wide. On the s32g274-rb2, the clock has a rate of 51MHz which result on 83 seconds maximum timeout. The timeout can be specified via the device tree with the usual existing bindings 'timeout-sec' or via the module param timeout. The watchdog can be loaded with the 'nowayout' option, preventing the watchdog to be stopped. The watchdog can be started at boot time with the 'early-enable' option, thus letting the watchdog framework to service the watchdog counter. The watchdog support the magic character to stop when the userspace releases the device. Cc: Ghennadi Procopciuc Cc: Thomas Fossati Signed-off-by: Daniel Lezcano Tested-by: Alexandru-Catalin Ionita Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20250410082616.1855860-3-daniel.lezcano@linaro.org Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck

watchdog: Do not enable by default during compile testing

2025-05-24T14:57:53Z

Enabling the compile test should not cause automatic enabling of all drivers. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20250404123941.362620-1-krzysztof.kozlowski@linaro.org Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck

watchdog: nic7018_wdt: tidy up ACPI ID table

2025-03-09T14:19:44Z

Tidy up ACPI ID table: - drop ACPI_PTR() and hence replace acpi.h with mod_devicetable.h - remove explicit driver_data initializer - drop comma in the terminator entry With that done, extend compile test coverage. Signed-off-by: Andy Shevchenko Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20250304140114.1812452-1-andriy.shevchenko@linux.intel.com Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck

watchdog: lenovo_se30_wdt: Watchdog driver for Lenovo SE30 platform

2025-03-09T14:19:43Z

Watchdog driver implementation for Lenovo SE30 platform. Signed-off-by: Mark Pearson Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20250131204855.1827-1-mpearson-lenovo@squebb.ca Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck

watchdog: Enable RZV2HWDT driver depend on ARCH_RENESAS

2025-03-09T14:19:42Z

RZ/G3E watchdog timer IP is similar to the one found on RZ/V2H. Both these SoCs belong to the ARCH_RENESAS family. So, it makes sense to use ARCH_RENESAS rather than ARCH_R9A09G057 to enable the RZV2HWDT driver. Signed-off-by: Biju Das Reviewed-by: Geert Uytterhoeven Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20250126132633.31956-3-biju.das.jz@bp.renesas.com Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck