[PATCH 0/3] hwmon: (pmbus/fs1412) Add TDK FS1412 support

[Abdurrahman Hussain]

The TDK FS1412 is a 12A uPOL regulator with PMBus telemetry. Its
VOUT_MODE has bit 7 set, which makes the VOUT limits relative to
VOUT_COMMAND, and the PMBus core rejects that mode, so the generic pmbus
driver cannot bind it. This series adds a small client driver that
clears the bit and converts the limits to absolute voltages.

Patch 1 adds the TDK vendor prefix, patch 2 documents the FS1412 as a
trivial device, and patch 3 adds the driver.

The driver only advertises what the datasheet's command table lists.
READ_IOUT and OT_WARN_LIMIT answer on the bus but are not in the table,
and the part reports OT_WARNING at room temperature, so the driver leaves
both alone.

Tested on a 6.12 kernel with an FS1412 behind an AXI IIC controller: the
driver binds, input voltage, output voltage and temperature match the raw
registers, the VOUT limits convert both ways, and a written limit reads
back as described.

---
Abdurrahman Hussain (3):
      dt-bindings: vendor-prefixes: Add TDK Corporation
      dt-bindings: trivial-devices: Add TDK FS1412
      hwmon: (pmbus/fs1412) Add TDK FS1412 driver

 .../devicetree/bindings/trivial-devices.yaml       |   2 +
 .../devicetree/bindings/vendor-prefixes.yaml       |   2 +
 Documentation/hwmon/fs1412.rst                     |  87 ++++++++++
 Documentation/hwmon/index.rst                      |   1 +
 MAINTAINERS                                        |   7 +
 drivers/hwmon/pmbus/Kconfig                        |   9 ++
 drivers/hwmon/pmbus/Makefile                       |   1 +
 drivers/hwmon/pmbus/fs1412.c                       | 179 +++++++++++++++++++++
 8 files changed, 288 insertions(+)
---
base-commit: a90ee4305c4a5df72c11b31dacfdc76e00fcf78a
change-id: 20261008-hwmon-pmbus-fs1412-fd4434717c19

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