kernel/linux.git/Documentation/hwmon, branch v6.19.11

hwmon: (peci/cputemp) Fix crit_hyst returning delta instead of absolute temperature

2026-04-02T11:25:42+00:00

commit 0adc752b4f7d82af7bd14f7cad3091b3b5d702ba upstream. The hwmon sysfs ABI expects tempN_crit_hyst to report the temperature at which the critical condition clears, not the hysteresis delta from the critical limit. The peci cputemp driver currently returns tjmax - tcontrol for crit_hyst_type, which is the hysteresis margin rather than the corresponding absolute temperature. Return tcontrol directly, and update the documentation accordingly. Fixes: bf3608f338e9 ("hwmon: peci: Add cputemp driver") Cc: stable@vger.kernel.org Signed-off-by: Sanman Pradhan Link: https://lore.kernel.org/r/20260323002352.93417-2-sanman.pradhan@hpe.com Signed-off-by: Guenter Roeck Signed-off-by: Greg Kroah-Hartman

hwmon: (adm1177) fix sysfs ABI violation and current unit conversion

2026-04-02T11:25:36+00:00

[ Upstream commit bf08749a6abb6d1959bfdc0edc32c640df407558 ] The adm1177 driver exposes the current alert threshold through hwmon_curr_max_alarm. This violates the hwmon sysfs ABI, where *_alarm attributes are read-only status flags and writable thresholds must use currN_max. The driver also stores the threshold internally in microamps, while currN_max is defined in milliamps. Convert the threshold accordingly on both the read and write paths. Widen the cached threshold and related calculations to 64 bits so that small shunt resistor values do not cause truncation or overflow. Also use 64-bit arithmetic for the mA/uA conversions, clamp writes to the range the hardware can represent, and propagate failures from adm1177_write_alert_thr() instead of silently ignoring them. Update the hwmon documentation to reflect the attribute rename and the correct units returned by the driver. Fixes: 09b08ac9e8d5 ("hwmon: (adm1177) Add ADM1177 Hot Swap Controller and Digital Power Monitor driver") Signed-off-by: Sanman Pradhan Acked-by: Nuno Sá Link: https://lore.kernel.org/r/20260325051246.28262-1-sanman.pradhan@hpe.com Signed-off-by: Guenter Roeck Signed-off-by: Sasha Levin

hwmon: (nct6683) Add customer ID for ASRock Z590 Taichi

2026-03-04T12:20:13+00:00

[ Upstream commit c0fa7879c9850bd4597740a79d4fac5ebfcf69cc ] Add support for customer ID 0x1621 found on ASRock Z590 Taichi boards using the Nuvoton NCT6686D embedded controller. This allows the driver to instantiate without requiring the force=1 module parameter. Tested on two separate ASRock Z590 Taichi boards, both with EC firmware version 1.0 build 01/25/21. Signed-off-by: Anj Duvnjak Link: https://lore.kernel.org/r/20251222220942.10762-1-avian@extremenerds.net Signed-off-by: Guenter Roeck Signed-off-by: Sasha Levin

hwmon: (asus-ec-sensors) add Pro WS TRX50-SAGE WIFI A

2026-03-04T12:20:12+00:00

[ Upstream commit af7e57d444141ac9e77b57296d59c3e965c4c4fa ] Adding support for Pro WS TRX50-SAGE WIFI A, which is identical sensors-wise to Pro WS TRX50-SAGE WIFI Signed-off-by: Robert McIntyre Signed-off-by: Eugene Shalygin Link: https://lore.kernel.org/r/20251213200531.259435-4-eugene.shalygin@gmail.com Signed-off-by: Guenter Roeck Signed-off-by: Sasha Levin

hwmon: (DS620) Update broken Datasheet URL in driver documentation

2025-12-18T17:50:27+00:00

The URL for the DS620 datasheet has changed. Update it to reflect the current location. Signed-off-by: Okan Akyuz Link: https://lore.kernel.org/r/20251215204423.80242-1-okan.akyuz.linux@gmail.com Signed-off-by: Guenter Roeck

docs: hwmon: fix link to g762 devicetree binding

2025-12-07T22:10:18+00:00

The devicetree binding for g762 was converted to YAML to match vendor prefix conventions. Update the reference accordingly. Signed-off-by: Kathara Sasikumar Link: https://lore.kernel.org/r/20251205215835.783273-1-katharasasikumar007@gmail.com Fixes: 3d8e25372417 ("dt-bindings: hwmon: g762: Convert to yaml schema") Signed-off-by: Guenter Roeck

hwmon: (asus-ec-sensors) add ROG STRIX X470-I GAMING

2025-11-21T19:19:46+00:00

Add support for ROG STRIX X470-I GAMING Signed-off-by: René Rebe Reviewed-by: Eugene Shalygin Link: https://lore.kernel.org/r/20251120.140009.210830394703243387.rene@exactco.de Signed-off-by: Guenter Roeck

hwmon: Add Apple Silicon SMC hwmon driver

2025-11-19T02:46:21+00:00

The System Management Controller on Apple Silicon devices is responsible for integrating and exposing the data reported by the vast array of hardware monitoring sensors present on these devices. It is also responsible for fan control, and allows users to manually set fan speeds if they so desire. Add a hwmon driver to expose current, power, temperature, and voltage monitoring sensors, as well as fan speed monitoring and control via the SMC on Apple Silicon devices. The SMC firmware has no consistency between devices, even when they share an SoC. The FourCC keys used to access sensors are almost random. An M1 Mac mini will have different FourCCs for its CPU core temperature sensors to an M1 MacBook Pro, for example. For this reason, the valid sensors for a given device are specified in a child of the SMC Devicetree node. The driver uses this information to determine which sensors to make available at runtime. Reviewed-by: Neal Gompa Acked-by: Guenter Roeck Co-developed-by: Janne Grunau Signed-off-by: Janne Grunau Signed-off-by: James Calligeros Link: https://lore.kernel.org/r/20251112-macsmc-subdevs-v5-6-728e4b91fe81@gmail.com [groeck: Added Documentation to index] Signed-off-by: Guenter Roeck

Documentation/hwmon: Fix broken datasheet links for zl6100

2025-11-17T18:44:47+00:00

Some of the datasheet links contained .pdf suffix which resulted in 404. This patch updates the links to the correct URLs on Renesas website. Signed-off-by: Igor Reznichenko Link: https://lore.kernel.org/r/20251115182908.1357793-1-igor@reznichenko.net Signed-off-by: Guenter Roeck

hwmon/pmbus: (isl68137) Add support for raa229141

2025-11-12T20:13:41+00:00

The RAA229141A is a digital dual output multiphase (X+Y ≤ 12) PWM controller designed to be compliant with Intel VR13, VR13.HC, VR14 and VR14.Cloud specifications, targeting VCORE and auxiliary rails. The RAA229141A supports the Intel SVID interface along with PMBus V1.3 specifications, making it ideal for controlling the microprocessor core and system rails in Intel VR13, VR13.HC, VR14 and VR14.Cloud platforms. Signed-off-by: Jeff Lin Link: https://lore.kernel.org/r/20251106104519.2014853-1-jefflin994697@gmail.com Signed-off-by: Guenter Roeck