kernel/git/stable/linux.git/drivers/watchdog/Makefile, branch master

watchdog: Add Nuvoton MA35D1 watchdog driver support

2026-08-10T16:00:04+00:00

Add driver support for the Watchdog Timer (WDT) integrated in Nuvoton MA35D1 SoC. This driver provides standard watchdog functionality, including timeout configuration, ping, and system reset support via the watchdog framework. Signed-off-by: Zi-Yu Chen Link: https://lore.kernel.org/r/20260804070351.1846165-3-zychennvt@gmail.com Signed-off-by: Guenter Roeck

watchdog: lenovo_se30g2_se60_wdt: Watchdog for Lenovo SE30G2 and SE60

2026-08-10T16:00:04+00:00

Watchdog driver implementation for Lenovo SE30G2 and SE60 platforms. Signed-off-by: Mark Pearson Link: https://lore.kernel.org/r/20260706145412.3833185-1-mpearson-lenovo@squebb.ca Signed-off-by: Guenter Roeck

watchdog: pretimeout: Add "dump" pretimeout governor

2026-08-10T16:00:03+00:00

Add a new "dump" pretimeout governor that triggers a backtrace of all CPUs (via trigger_all_cpu_backtrace()) to the kernel log buffer. This provides diagnostic information right before the hardware watchdog fires. In addition, update the WATCHDOG_PRETIMEOUT_GOV_SEL Kconfig logic to fall back to the "panic" governor only when both "noop" and "dump" governors are disabled. Signed-off-by: Tzung-Bi Shih Link: https://lore.kernel.org/r/20260707102105.3600275-1-tzungbi@kernel.org Signed-off-by: Guenter Roeck

watchdog: Remove AMD Elan SC520 processor watchdog driver

2026-05-10T15:31:34+00:00

AMD Elan support was removed from the upstream kernel with commit 8b793a92d862 ("x86/cpu: Remove M486/M486SX/ELAN support"). Its watchdog driver can no longer be enabled except for test builds. Remove it. Signed-off-by: Guenter Roeck

watchdog: atcwdt200: Add driver for Andes ATCWDT200

2026-05-10T15:31:34+00:00

Add support for the Andes ATCWDT200 watchdog timer. The driver implements programmable reset and interrupt timers, and includes automatic detection of the supported IntTime bit-width. Integrated with the Linux watchdog framework, it supports basic operations including start, stop, ping, timeout configuration, and system reset via the restart handler. Signed-off-by: CL Wang Link: https://lore.kernel.org/r/20260115081444.2452357-3-cl634@andestech.com Signed-off-by: Guenter Roeck

watchdog: Add driver for Gunyah Watchdog

2026-05-03T15:47:56+00:00

On Qualcomm SoCs running under the Gunyah hypervisor, access to watchdog through MMIO is not available on all platforms. Depending on the hypervisor configuration, the watchdog is either fully emulated or exposed via ARM's SMC Calling Conventions (SMCCC) through the Vendor Specific Hypervisor Service Calls space. Add driver to support the SMC-based watchdog provided by the Gunyah Hypervisor. Device registration is done in the QCOM SCM driver after checks to restrict the watchdog initialization to Qualcomm devices running under Gunyah. Gunyah watchdog is not a hardware but an SMC-based vendor-specific hypervisor interface provided by the Gunyah hypervisor. The design involving QCOM SCM driver for registering the platform device has been devised to avoid adding non-hardware nodes to devicetree. Tested-by: Shivendra Pratap Tested-by: Neil Armstrong Tested-by: Mukesh Ojha Reviewed-by: Guenter Roeck Reviewed-by: Dmitry Baryshkov Signed-off-by: Hrishabh Rajput Signed-off-by: Pavankumar Kondeti Link: https://lore.kernel.org/r/20260311-gunyah_watchdog-v8-2-4c1c0689de22@oss.qualcomm.com Signed-off-by: Guenter Roeck

watchdog: remove driver for integrated WDT of ZFx86 486-based SoC

2026-05-03T15:33:06+00:00

The machzwd driver supports the integrated watchdog of the ZF Micro ZFx86 SoC, which contains a 486-compatible core [1]. Since 486 support was removed in commit 8b793a92d862 ("x86/cpu: Remove M486/M486SX/ELAN support"), the driver is no longer useful, Remove it. [1] https://www.zfmicro.com/zfx86.html Signed-off-by: Ethan Nelson-Moore Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20260428014806.35400-1-enelsonmoore@gmail.com Signed-off-by: Guenter Roeck

watchdog: iTCO: Drop vendor support

2026-01-18T09:55:08+00:00

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: renesas_wwdt: add driver

2025-11-15T14:19:55+00:00

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

2025-09-16T13:41:57+00:00

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