[PATCH v2 0/2] hwmon: Add Murata D1U74T-W PSU driver

[Abdurrahman Hussain]

This series adds a PMBus driver for the Murata D1U74T-W AC/DC power
supply unit, used in some Open Compute Project platforms.

The PSU is PMBus-compliant and uses the linear data format. The driver
exposes:

  - input/output voltage, current and power telemetry,
  - three temperature sensors,
  - dual fan tachometer monitoring,

through the standard hwmon/pmbus sysfs interface. Probe verifies the
PMBUS_MFR_ID and PMBUS_MFR_MODEL fields before binding so the driver
only attaches to actual D1U74T-W hardware.

Patch 1 adds the compatible string to trivial-devices.yaml. The
binding declares only compatible and reg (no regulators, no supplies),
so a standalone binding file is not warranted.

Patch 2 adds the driver, hwmon documentation, Kconfig/Makefile entries
and MAINTAINERS section.

Signed-off-by: Abdurrahman Hussain <abdurrahman@xxxxxxxxxx>
---
Changes in v2:
- Patch 1: move the binding into trivial-devices.yaml rather than
  carrying a standalone murata,d1u74t.yaml. The device only declares
  compatible and reg, with no regulators or supplies, so the
  standalone binding was not warranted (Conor Dooley review).
- Patch 2: fix the d1u74t.rst title underline (was 18 '=' chars under
  a 20-char title, docutils warning from the kernel test robot).
- Link to v1: https://patch.msgid.link/20260511-d1u74t-v1-0-623c2bc1532a@xxxxxxxxxx

To: Rob Herring <robh@xxxxxxxxxx>
To: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
To: Conor Dooley <conor+dt@xxxxxxxxxx>
To: Abdurrahman Hussain <abdurrahman@xxxxxxxxxx>
To: Guenter Roeck <linux@xxxxxxxxxxxx>
To: Jonathan Corbet <corbet@xxxxxxx>
To: Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: linux-hwmon@xxxxxxxxxxxxxxx
Cc: linux-doc@xxxxxxxxxxxxxxx

---
Abdurrahman Hussain (2):
      dt-bindings: trivial-devices: Add Murata D1U74T PSU
      hwmon: (pmbus/d1u74t) Add Murata D1U74T PSU driver

 .../devicetree/bindings/trivial-devices.yaml       |  2 +
 Documentation/hwmon/d1u74t.rst                     | 97 ++++++++++++++++++++++
 Documentation/hwmon/index.rst                      |  1 +
 MAINTAINERS                                        |  7 ++
 drivers/hwmon/pmbus/Kconfig                        |  9 ++
 drivers/hwmon/pmbus/Makefile                       |  1 +
 drivers/hwmon/pmbus/d1u74t.c                       | 85 +++++++++++++++++++
 7 files changed, 202 insertions(+)
---
base-commit: 5d6919055dec134de3c40167a490f33c74c12581
change-id: 20260511-d1u74t-c0cba8f1c344

Best regards,
--  
Abdurrahman Hussain <abdurrahman@xxxxxxxxxx>