Commit Graph

1444056 Commits

Author SHA1 Message Date
Bartosz Golaszewski
63e07a8ecb watchdog: convert the Kconfig dependency on OF_GPIO to OF
OF_GPIO is selected automatically on all OF systems. Any symbols it
controls also provide stubs so there's really no reason to select it
explicitly. We could simply remove the dependency but in order to avoid
a new symbol popping up for everyone in make config - just convert it to
requiring CONFIG_OF.

Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260506081600.4921-1-bartosz.golaszewski@oss.qualcomm.com
[groeck: Resolved conflict; updated dependencies to require OF _or_ ACPI]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:34 -07:00
Guenter Roeck
550c3bcdda watchdog: Remove AMD Elan SC520 processor watchdog driver
AMD Elan support was removed from the upstream kernel with commit
8b793a92d8 ("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 <linux@roeck-us.net>
2026-05-10 08:31:34 -07:00
Mark Pearson
3394e89488 watchdog: lenovo_se10_wdt: Fix use-after-free and resource leak risk
Review by sashiko.dev highlighted potential use after free and resource
leak instances.

Set se10_pdev to null to prevent use after free

Remove DMI call back and instead directly call
se10_create_platform_device. Handle error cases appropriately

Link: https://sashiko.dev/#/patchset/20260428124954.1193450-1-mpearson-lenovo%40squebb.ca

Signed-off-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Link: https://lore.kernel.org/r/20260504180159.999189-1-mpearson-lenovo@squebb.ca
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:34 -07:00
Komal Bajaj
5e5b01ae7a dt-bindings: watchdog: qcom-wdt: Document Shikra watchdog
Add devicetree binding for watchdog present on Qualcomm's Shikra SoC

Signed-off-by: Komal Bajaj <komal.bajaj@oss.qualcomm.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260501-shikra-wdog-binding-v1-1-fd8c14bc2d20@oss.qualcomm.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:34 -07:00
Philipp Hahn
44c94a7e11 watchdog: Prefix WDT with ICS for clarity
`wdt.rst` is only about the Watchdog from "Industrial Computer Source"
(ICS). Change the title and rename the file to better express this.

Add missing SPDX license identifier `GPL-2.0-or-later` same as code to
silence `checkpatch`.

Fix wrong link to sample driver in drivers/watchdog/smsc37b787_wdt.c.

Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
Link: https://lore.kernel.org/r/5a71979d8e8ab8e0a30de33f6aa2540b3b5dc1ee.1777972790.git.phahn-oss@avm.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:34 -07:00
Philipp Hahn
dfc93986a5 watchdog: Separate kind of documentation
Currently there are several (sub-)documents for "Generic kernel
infrastructure API" and several "driver specific" documents. Put each
one into its own sub-section.

Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
Link: https://lore.kernel.org/r/7d1b722205bab83603832e66750f7b5f1f73eaa5.1777972790.git.phahn-oss@avm.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:34 -07:00
Philipp Hahn
e46082426b watchdog: Replace intermixed tab/space indent
Consistently indent all lines with tabs instead of having one line using
blanks.

Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
Link: https://lore.kernel.org/r/e1ccbfb0efb9a9f508d1afe10263af1578a1aa46.1777972790.git.phahn-oss@avm.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:34 -07:00
Philipp Hahn
e40714929f watchdog: Move struct before name
Write `struct ` before the structure name as Sphinx otherwise uses the
following word after it. See
https://docs.kernel.org/watchdog/watchdog-api.html#environmental-monitoring

Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
Link: https://lore.kernel.org/r/e66ec58f3b8252b3676cc9fe68818af95123210c.1777972790.git.phahn-oss@avm.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:34 -07:00
Philipp Hahn
d15a35c059 watchdog: Change suffix .txt to .rst in references
Fix link to documentation, which has already been converted to reST.
Also remove apostrophes which are no longer needed.

Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
Link: https://lore.kernel.org/r/bb1aa3129d5e52bc4c8e1ec3340b88f80f726fef.1777972790.git.phahn-oss@avm.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:34 -07:00
Deepti Jaggi
8ff498b250 dt-bindings: watchdog: qcom-wdt: Add compatible for Nord watchdog
Document Krait Processor Sub-system (KPSS) Watchdog timer on Nord SoC.

Signed-off-by: Deepti Jaggi <deepti.jaggi@oss.qualcomm.com>
Signed-off-by: Shawn Guo <shengchao.guo@oss.qualcomm.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260504081643.826038-1-shengchao.guo@oss.qualcomm.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:34 -07:00
Mark Pearson
7b25feb19c watchdog: lenovo_se10_wdt: Add support for SE10 Gen 2 platform
The Lenovo SE10 Gen 2 platform uses a watchdog chip from the same family.
Watchdog functionality is the same, so update the driver with the new chip
ID.

Add the Gen 2 MTM's to enable support on the platform.

Tested on SE10 G2.

Signed-off-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Link: https://lore.kernel.org/r/20260428124954.1193450-1-mpearson-lenovo@squebb.ca
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:34 -07:00
CL Wang
b5998b4bc5 MAINTAINERS: Add entry for Andes ATCWDT200
Add a MAINTAINERS entry for the Andes ATCWDT200 watchdog driver and its
associated Device Tree bindings.

Signed-off-by: CL Wang <cl634@andestech.com>
Link: https://lore.kernel.org/r/20260115081444.2452357-4-cl634@andestech.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:34 -07:00
CL Wang
e4e0848ad0 watchdog: atcwdt200: Add driver for Andes ATCWDT200
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 <cl634@andestech.com>
Link: https://lore.kernel.org/r/20260115081444.2452357-3-cl634@andestech.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:34 -07:00
CL Wang
fec053e452 dt-bindings: watchdog: Add support for Andes ATCWDT200
Add the devicetree binding documentation for the Andes ATCWDT200
watchdog timer.

ATCWDT200 is the IP name, which is embedded in AndesCore-based
platforms or SoCs such as AE350 and Qilai.

Signed-off-by: CL Wang <cl634@andestech.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20260115081444.2452357-2-cl634@andestech.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:34 -07:00
Balakrishnan Sambath
10820327b9 watchdog: at91sam9_wdt.h: Document WDDIS bit position per SoC family
AT91_WDT_WDDIS (bit 15) applies to SAMA5/AT91SAM9261 and
AT91_SAM9X60_WDDIS (bit 12) to SAM9X60/SAMA7G5/SAM9X75. Update
comments to reflect this and add SAMA7G5 and SAM9X75 datasheet
references to the file header.

Signed-off-by: Balakrishnan Sambath <balakrishnan.s@microchip.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20260302113310.133989-3-balakrishnan.s@microchip.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:34 -07:00
Ranjani Vaidyanathan
1f5b29add6 watchdog: imx7ulp_wdt: Keep WDOG running until A55 enters WFI on i.MX94
On i.MX94, watchdog sources clock from bus clock that will be always on
during the lifecycle of Linux. There is a Low Power Clock Gating(LPCG)
between the bus clock and watchdog, but the LPCG is not exported for
software to control, it is hardware automatically controlled. When
Cortex-A55 executes WFI during suspend flow, the LPCG will automatically
gate off the clock to stop watchdog and resume clock when Cortex-A55 is
woke up.

So watchdog could always be alive to protect Linux, except Cortex-A
platform WFI is executed in Linux suspend flow.

Introduce a new hardware feature flag to indicate CPU low-power-mode
auto clock gating support, and use it to avoid stopping the watchdog
during suspend when LPCG can safely keep it running.

Add i.MX94-specific watchdog hardware data and DT compatible entry to
enable this behavior.

Signed-off-by: Ranjani Vaidyanathan <ranjani.vaidyanathan@nxp.com>
[peng.fan@nxp.com: rewrite commit log for clarity]
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20260206-imx94-wdog-v2-1-4dd725faec1f@nxp.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:34 -07:00
Judith Mendez
aed1abf31e watchdog: rti_wdt: Add reaction control
This configures the reaction between NMI and reset for WWD.

On K3 SoCs other than AM62L SoC [0], watchdog reset output is routed
to the ESM module which can subsequently route the signal to safety
master or SoC reset. On AM62L, the watchdog reset output is routed
to the SoC HW reset block. So, add a new compatible for AM62L to add
SoC data and configure reaction to reset instead of NMI.

[0] https://www.ti.com/product/AM62L
Signed-off-by: Judith Mendez <jm@ti.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20260206234255.380530-3-jm@ti.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:34 -07:00
Judith Mendez
4e9590d8d5 dt-bindings: watchdog: ti,rti-wdt: Add ti,am62l-rti-wdt compatible
Add a new compatible ti,am62l-rti-wdt for AM62L SoC [0].

[0] https://www.ti.com/product/AM62L
Signed-off-by: Judith Mendez <jm@ti.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20260206234255.380530-2-jm@ti.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:33 -07:00
Brian Masney
96bbd62179 watchdog: pic32-dmt: allow driver to be compiled on all architectures with COMPILE_TEST
This driver currently only supports builds against a PIC32 target, or
with COMPILE_TEST on MIPS. Now that commit 0f8a61ca78 ("watchdog:
pic32-dmt: update include to use pic32.h from platform_data") is merged,
it's possible to compile this driver on other architectures.

To avoid future breakage of this driver in the future, let's update the
Kconfig so that it can be built with COMPILE_TEST enabled on all
architectures.

Signed-off-by: Brian Masney <bmasney@redhat.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20260222-watchdog-pic32-v1-2-a2538aa528d1@redhat.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:33 -07:00
Brian Masney
79bbc356d5 watchdog: pic32-wdt: allow driver to be compiled on all architectures with COMPILE_TEST
This driver currently only supports builds against a PIC32 target, or
with COMPILE_TEST on MIPS. Now that commit 5aa5879eee ("watchdog:
pic32-wdt: update include to use pic32.h from platform_data") is merged,
it's possible to compile this driver on other architectures.

To avoid future breakage of this driver in the future, let's update the
Kconfig so that it can be built with COMPILE_TEST enabled on all
architectures.

Signed-off-by: Brian Masney <bmasney@redhat.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20260222-watchdog-pic32-v1-1-a2538aa528d1@redhat.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-10 08:31:33 -07:00
Felix Gu
96b3cfc3b8 watchdog: sprd_wdt: Remove redundant sprd_wdt_disable() on register failure
The driver uses devm_add_action_or_reset() to register sprd_wdt_disable()
as a managed cleanup action.

When devm_watchdog_register_device() fails, the devm core will invoke
the cleanup action automatically.

The explicit sprd_wdt_disable() call in the error path is therefore
redundant and results in adouble cleanup.

Fixes: 78d9bfad2e ("watchdog: sprd_wdt: Convert to use device managed functions and other improvements")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20260223-sprd_wdt-v1-1-2e71f9a76ecb@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 13:49:51 -07:00
Andrew Davis
bdd918c4e4 watchdog: bcm2835_wdt: Switch to new sys-off handler API
Kernel now supports chained power-off handlers. Use
devm_register_sys_off_handler() that registers a power-off handler. Legacy
pm_power_off() will be removed once all drivers and archs are converted to
the new sys-off API.

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/20260302180853.224112-1-afd@ti.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 13:47:01 -07:00
Biju Das
587d5a3778 dt-bindings: watchdog: renesas,wdt: Document RZ/G3L support
Document the support for the watchdog IP available on RZ/G3L SoC. The
watchdog IP available on RZ/G3L SoC is identical to the one found on
RZ/G2L SoC.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20260206112227.233229-1-biju.das.jz@bp.renesas.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 09:04:44 -07:00
Fabrizio Castro
b5a8fc6b88 dt-bindings: watchdog: renesas,r9a09g057-wdt: Rework example
When the bindings for the Renesas RZ/V2H(P) SoC were factored
out IP WDT0 was selected for the example, however the HW user
manual states that only IP WDT1 can be used by Linux.

This commit is part of a series that removes WDT{0,2,3} support
from the kernel, therefore the example from the bindings has
lost its meaning.

Update the example accordingly.

Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20260203124247.7320-2-fabrizio.castro.jz@renesas.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 08:59:35 -07:00
Michael Walle
f1ea97d64b dt-bindings: watchdog: Drop SMARC-sAM67 support
I was just informed that this product is discontinued (without being
ever released to the market). Pull the plug and let's not waste any more
maintainers time and revert commit 354f31e9d2 ("dt-bindings: watchdog:
Add SMARC-sAM67 support").

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20260302122540.1377444-7-mwalle@kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 08:56:42 -07:00
Fabio Estevam
882fc25d86 dt-bindings: watchdog: rockchip: Add RV1103B compatible
The RV1103B watchdog is compatible with the existing DesignWare Watchdog
binding. Add the rockchip,rv1103b-wdt compatible string.

Signed-off-by: Fabio Estevam <festevam@nabladev.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20260310002040.417424-1-festevam@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 08:55:48 -07:00
Balakrishnan Sambath
e8bc610b14 watchdog: sama5d4_wdt: Fix WDDIS detection on SAM9X60 and SAMA7G5
The driver hardcoded AT91_WDT_WDDIS (bit 15) in wdt_enabled and the
probe initial state readout. SAM9X60 and SAMA7G5 use bit 12
(AT91_SAM9X60_WDDIS), causing incorrect WDDIS detection.

Introduce a per-device wddis_mask field to select the correct WDDIS
bit based on the compatible string.

Fixes: 266da53c35 ("watchdog: sama5d4: readout initial state")
Co-developed-by: Andrei Simion <andrei.simion@microchip.com>
Signed-off-by: Andrei Simion <andrei.simion@microchip.com>
Signed-off-by: Balakrishnan Sambath <balakrishnan.s@microchip.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20260302113310.133989-2-balakrishnan.s@microchip.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 08:50:12 -07:00
Hrishabh Rajput
ca316e145c watchdog: Add driver for Gunyah Watchdog
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 <shivendra.pratap@oss.qualcomm.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org>
Tested-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Hrishabh Rajput <hrishabh.rajput@oss.qualcomm.com>
Signed-off-by: Pavankumar Kondeti <pavan.kondeti@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260311-gunyah_watchdog-v8-2-4c1c0689de22@oss.qualcomm.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 08:47:56 -07:00
Shubham Chakraborty
63077abe9c docs: watchdog: explain watchdog API options
Replace FIXME comment with proper documentation for
WDIOS_DISABLECARD, WDIOS_ENABLECARD, and WDIOS_TEMPPANIC
options.

Signed-off-by: Shubham Chakraborty <chakrabortyshubham66@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20260311121602.139967-1-chakrabortyshubham66@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 08:45:16 -07:00
Flavio Suligoi
5abb70c8f7 watchdog: gpio_wdt: add ACPI support
The gpio_wdt device driver uses the device property APIs, so it is
firmware agnostic. For this reason we can now add the ACPI support in
Kconfig.
In this way it can be used seamlessly in ACPI and DT systems.

For example, a typical GPIO watchdog device configuration, in an ACPI
SSDT table, could be:

Device (WDOG) {
    Name (_HID, "WDOG0001")
    Name (_CID, "PRP0001")
    Name (_UID, One)
    Name (_CRS, ResourceTemplate () {
        GpioIo (Exclusive, PullNone, 0, 0, IoRestrictionOutputOnly,
                "\\_SB.GPI0", 0, ResourceConsumer, ,) { 3 }
    })
    Method (_STA, 0, NotSerialized) {
        Return (0x0F)
    }
    Name (_DSD, Package (2)
    {
        ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
        Package (5)
        {
            Package () { "compatible", Package() { "linux,wdt-gpio" } },
            Package () { "hw_algo", "toggle" },
            Package () { "gpios", Package () { ^WDOG, 0, 0, 0 } },
            Package () { "hw_margin_ms", 2000 },
            Package () { "always-running", 1 },
        },
    })
}

Signed-off-by: Flavio Suligoi <f.suligoi@asem.it>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20260323125204.164785-2-f.suligoi@asem.it
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 08:40:32 -07:00
Steve Wahl
d8207d1e9a watchdog/hpwdt: Refine hpwdt message for UV platform
The watchdog hardware the hpwdt driver uses was added to the UV
platform for UV_5, but the logging mentioned by this driver was not
added to the BIOS.  When the watchdog fires, the printed message had
the administrators and developers looking for non-existent log files,
and confused about whether a watchdog actually tripped.

Change the message that prints on UV platforms so it doesn't send the
user looking for non-existent logs.

To aid in any future debugging, include all 8 bits of the NMISTAT
register in the output, not just the two bits being used to determine
this was "mynmi".  And provide names to the bits in NMISTAT so the
code is easier to understand.

Signed-off-by: Steve Wahl <steve.wahl@hpe.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20260318155005.90271-1-steve.wahl@hpe.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 08:40:03 -07:00
Eduard Bostina
d651a26453 dt-bindings: watchdog: Convert TS-4800 to DT schema
Convert the Technologic Systems TS-4800 watchdog timer bindings
to DT schema.

Signed-off-by: Eduard Bostina <egbostina@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20260323175948.302441-2-egbostina@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 08:39:07 -07:00
Jose Javier Rodriguez Barbarin
2963bb3d5a watchdog: menz069_wdt: drop unneeded MODULE_ALIAS
Since commit 1f4ea4838b ("mcb: Add missing modpost build support")
the MODULE_ALIAS() is redundant as the module alias is now
automatically generated from the MODULE_DEVICE_TABLE().

Remove the explicit alias.

No functional change intended.

Reviewed-by: Jorge Sanjuan Garcia <dev-jorge.sanjuangarcia@duagon.com>
Signed-off-by: Jose Javier Rodriguez Barbarin <dev-josejavier.rodriguez@duagon.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20260323112413.21923-2-dev-josejavier.rodriguez@duagon.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 08:38:34 -07:00
Herve Codina (Schneider Electric)
cde09b031d watchdog: rzn1: Fix reverse xmas tree declaration
Variables declared in probe() don't follow the reverse xmas
tree convention.

Fix the declaration in order to follow the convention.

Signed-off-by: Herve Codina (Schneider Electric) <herve.codina@bootlin.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20260324114849.242755-2-herve.codina@bootlin.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 08:38:09 -07:00
Herve Codina (Schneider Electric)
07d690db9f watchdog: rzn1: Use dev_err_probe()
In the probe() function the following pattern is present several times:
	if (err) {
		dev_err(dev, ...);
		return err;
	}

Replace them by dev_err_probe() calls.

Signed-off-by: Herve Codina (Schneider Electric) <herve.codina@bootlin.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20260324114849.242755-3-herve.codina@bootlin.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 08:37:49 -07:00
Yingjie Gao
4f675f036c watchdog: sp5100_tco: Use EFCH MMIO for newer Hygon FCH
Commit 009637de1f ("watchdog: sp5100_tco: support Hygon FCH/SCH
(Server Controller Hub)") added Hygon vendor matching to the efch
layout selection, but newer Hygon 0x790b SMBus devices still need the
efch_mmio path.

The efch_mmio path enables EFCH_PM_DECODEEN_WDT_TMREN before probing the
watchdog MMIO block. If firmware leaves that bit clear and the driver
picks the legacy efch path instead, probe falls back to the alternate
window and fails with "Watchdog hardware is disabled".

Select efch_mmio for Hygon 0x790b devices with revision 0x51 or later,
matching the equivalent AMD behavior and allowing the watchdog to
initialize on those systems.

Fixes: 009637de1f ("watchdog: sp5100_tco: support Hygon FCH/SCH (Server Controller Hub)")
Signed-off-by: Yingjie Gao <gaoyingjie@uniontech.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20260402071617.634563-2-gaoyingjie@uniontech.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 08:36:47 -07:00
Mukesh Ojha
066f6001fb dt-bindings: watchdog: qcom-wdt: Document Hawi watchdog compatible
Add devicetree binding for watchdog present on Qualcomm Hawi SoC.

Signed-off-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260401124442.591803-1-mukesh.ojha@oss.qualcomm.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 08:36:22 -07:00
Kathiravan Thirumoorthy
158dd300b0 watchdog: qcom: add support to get the bootstatus from IMEM
When the system boots up after a watchdog reset, the EXPIRED_STATUS bit
in the WDT_STS register is cleared. To identify if the system was
restarted due to WDT expiry, XBL update the information in the IMEM region.
Update the driver to read the restart reason from IMEM and populate the
bootstatus accordingly.

With the CONFIG_WATCHDOG_SYSFS enabled, user can extract the information
as below:

cat /sys/devices/platform/soc@0/f410000.watchdog/watchdog/watchdog0/bootstatus
32

For backward compatibility, keep the EXPIRED_STATUS bit check. Add a new
function qcom_wdt_get_bootstatus() to read the restart reason from
IMEM.

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Kathiravan Thirumoorthy <kathiravan.thirumoorthy@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260408-wdt_reset_reason-v10-2-caf66786329f@oss.qualcomm.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 08:35:52 -07:00
Kathiravan Thirumoorthy
ea333d1991 dt-bindings: watchdog: qcom-wdt: Document sram property
Document the "sram" property for the watchdog device on Qualcomm
IPQ platforms. Use this property to extract the restart reason from
IMEM, which is updated by XBL. Populate the watchdog's bootstatus sysFS
entry with this information, when the system reboots due to a watchdog
timeout.

Describe this property for the IPQ5424 watchdog device and extend support
to other targets subsequently.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Kathiravan Thirumoorthy <kathiravan.thirumoorthy@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260408-wdt_reset_reason-v10-1-caf66786329f@oss.qualcomm.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 08:35:21 -07:00
Krzysztof Kozlowski
3b3a80dacd watchdog: qcom: Unify user-visible "Qualcomm" name
Various names for Qualcomm as a company are used in user-visible config
options: QCOM, Qualcomm and Qualcomm Technologies.  Switch to unified
"Qualcomm" so it will be easier for users to identify the options when
for example running menuconfig.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20260422082736.81981-2-krzysztof.kozlowski@oss.qualcomm.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 08:33:56 -07:00
Ethan Nelson-Moore
151d4c1b2f watchdog: remove driver for integrated WDT of ZFx86 486-based SoC
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 8b793a92d8 ("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 <enelsonmoore@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20260428014806.35400-1-enelsonmoore@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-03 08:33:06 -07:00
Linus Torvalds
254f49634e Linux 7.1-rc1 2026-04-26 14:19:00 -07:00
Linus Torvalds
14479877c1 One more fix for the merge window to avoid a boot hang on
Raspberry Pi 3B by marking the VEC clk critical so it doesn't get
 turned off and hang the bus.
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fix from Stephen Boyd:
 "One more fix for the merge window to avoid a boot hang on
  Raspberry Pi 3B by marking the VEC clk critical so that it
  doesn't get turned off and hang the bus"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: bcm: rpi: Mark VEC clock as CLK_IGNORE_UNUSED
2026-04-26 14:03:20 -07:00
Linus Torvalds
20b64cf870 tsm for 7.1
- Drop class_create() for the "tsm" class
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Merge tag 'tsm-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/devsec/tsm

Pull PCIe TSP update from Dan Williams:
 "A small update for the TSM core. It is arguably a fix and coming in
  late as I have been offline the past few weeks:

   - Drop class_create() for the 'tsm' class"

* tag 'tsm-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/devsec/tsm:
  virt: coco: change tsm_class to a const struct
2026-04-26 09:51:29 -07:00
Linus Torvalds
b935117fe6 First round of Kbuild fixes for 7.1
- kbuild: builddeb - avoid recompiles for non-cross-compiles
 
     Avoid triggering complete rebuilds for non-cross-compile Debian
     package builds by only triggering the rebuild of host tools for
     actual cross-compile builds.
 
   - kbuild: Never respect CONFIG_WERROR / W=e to fixdep
 
     Avoid spurious rebuilds of fixdep w/ and w/o -Werror during a single
     kbuild invocation by never respecting CONFIG_WERROR for fixdep.
 
 Cc: Masahiro Yamada <masahiroy@kernel.org>
 Cc: Mathias Krause <minipli@grsecurity.net>
 Cc: Nathan Chancellor <nathan@kernel.org>
 Cc: Thomas Weißschuh <linux@weissschuh.net>
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Merge tag 'kbuild-fixes-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux

Pull Kbuild fixes from Nicolas Schier:

 - builddeb - avoid recompiles for non-cross-compiles

   Avoid triggering complete rebuilds for non-cross-compile Debian
   package builds by only triggering the rebuild of host tools for
   actual cross-compile builds

 - Never respect CONFIG_WERROR / W=e to fixdep

   Avoid spurious rebuilds of fixdep w/ and w/o -Werror during a single
   kbuild invocation by never respecting CONFIG_WERROR for fixdep

* tag 'kbuild-fixes-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux:
  kbuild: Never respect CONFIG_WERROR / W=e to fixdep
  kbuild: builddeb - avoid recompiles for non-cross-compiles
2026-04-25 17:04:15 -07:00
Linus Torvalds
2ff1bc41ef Power Utilities 2026.04.25
tools/power x86_energy_perf_policy: v2026.04.25
 
 	Since v2025.11.22:
 
 	Initial SoC Slider support
 
 tools/power turbostat: v2026.04.21
 
 	Since v2026.02.14
 
 	Display HT siblings in cpu# order.
 	Add Module-ID column.
 	Print Core-ID and APIC-ID in hex.
 	Fix misc bugs.
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Merge tag 'power-utilities-2026.04.25' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux

Pull power utility updates from Len Brown:
 "x86_energy_perf_policy:
   - Initial SoC Slider support

 turbostat:
   - Display HT siblings in cpu# order
   - Add Module-ID column
   - Print Core-ID and APIC-ID in hex
   - Fix misc bugs"

* tag 'power-utilities-2026.04.25' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power x86_energy_perf_policy: Version 2026.04.25
  tools/power x86_energy_perf_policy.8: Document SoC Slider Options
  tools/power x86_energy_perf_policy: Enhances SoC Slider related checks
  tools/power turbostat: v2026.04.21
  tools/power turbostat: Process HT siblings in CPU order
  tools/power turbostat: Show module_id column
  tools/power turbostat: Print core_id and apic_id in hex
  tools/power turbostat: Cleanup print helper functions
  tools/power turbostat: Fix --cpu-set 1 regression on HT systems
  tools/power turbostat: Fix --cpu-set 0 regression on HT systems
  tools/power turbostat: Fix unrecognized option '-P'
  tools/power turbostat: Fix AMD RAPL regression on big systems
  tools/power/x86: Add SOC slider and platform profile support
2026-04-25 16:58:34 -07:00
Linus Torvalds
211d593314 RTC for 7.1
Subsystem:
  - add data_race() in rtc_dev_poll()
 
 Drivers:
  - remove i2c_match_id usage
  - abx80x: Disable alarm feature if no interrupt attached
  - ti-k3: support resuming from IO DDR low power mode
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Merge tag 'rtc-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC updates from Alexandre Belloni:
 "Subsystem:
   - add data_race() in rtc_dev_poll()

  Drivers:
   - remove i2c_match_id usage
   - abx80x: Disable alarm feature if no interrupt attached
   - ti-k3: support resuming from IO DDR low power mode"

* tag 'rtc-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
  rtc: abx80x: Disable alarm feature if no interrupt attached
  rtc: ntxec: fix OF node reference imbalance
  rtc: pic32: allow driver to be compiled with COMPILE_TEST
  rtc: ti-k3: Add support to resume from IO DDR low power mode
  rtc: cmos: Use platform_get_irq_optional() in cmos_platform_probe()
  dt-bindings: rtc: add olpc,xo1-rtc to trivial-rtc
  dt-bindings: rtc: sc2731: Add compatible for SC2730
  rtc: add data_race() in rtc_dev_poll()
  rtc: armada38x: zalloc + calloc to single allocation
  dt-bindings: rtc: isl12026: convert to YAML schema
  dt-bindings: rtc: microcrystal,rv3028: Allow to specify vdd-supply
  rtc: max77686: convert to i2c_new_ancillary_device
  dt-bindings: rtc: mpfs-rtc: permit resets
  rtc: rx8025: Remove use of i2c_match_id()
  rtc: rv8803: Remove use of i2c_match_id()
  rtc: rs5c372: Remove use of i2c_match_id()
  rtc: pcf2127: Remove use of i2c_match_id()
  rtc: m41t80: Remove use of i2c_match_id()
  rtc: abx80x: Remove use of i2c_match_id()
2026-04-25 16:39:03 -07:00
Linus Torvalds
1d9f1b5e43 Here are the accumulated fixes for 7.1-rc1 and a single structural worth of
mentioning separately: Rafael's commit converting tpm_crb from ACPI driver
 to a platform driver. Starting from this release cycle, the branch with TPM
 changes mirrored to next is 'for-next-tpm', and patches for keys have their
 own separate 'for-next-keys' branch.
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Merge tag 'for-next-tpm-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd

Pull tpm updates from Jarkko Sakkinen:
 "Here are the accumulated fixes for 7.1-rc1 and a single structural
  change worth mentioning separately: Rafael's commit converting tpm_crb
  from ACPI driver to a platform driver"

* tag 'for-next-tpm-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
  tpm: tpm_tis: stop transmit if retries are exhausted
  tpm: tpm_tis: add error logging for data transfer
  tpm: avoid -Wunused-but-set-variable
  tpm: Use kfree_sensitive() to free auth session in tpm_dev_release()
  tpm2-sessions: Fix missing tpm_buf_destroy() in tpm2_read_public()
  tpm: Fix auth session leak in tpm2_get_random() error path
  tpm: i2c: atmel: fix block comment formatting
  tpm_crb: Convert ACPI driver to a platform one
  tpm: Make tcpci_pm_ops variable static const
2026-04-25 16:20:52 -07:00
Len Brown
6112da1ea4 Merge branches 'turbostat' and 'x86_energy_perf_policy' into power-utilities 2026-04-25 14:26:32 -04:00
Len Brown
f1c35c7319 tools/power x86_energy_perf_policy: Version 2026.04.25
Since v2025.11.22:
	Initial SoC Slider support
	SoC Slider is an SoC-wide power/performance policy setting.
	On SoC Slider systems, EPP plays a diminished role.

Whitespace cleanup via: indent -npro -kr -i8 -ts8 -sob -l160 -ss -ncs -cp1

No functional changes

Signed-off-by: Len Brown <len.brown@intel.com>
2026-04-25 14:18:45 -04:00