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[hwmon-next,v4,0/3] Add support for EMC2305 Fan Speed Controller.

Message ID 20220623165217.59252-1-michaelsh@nvidia.com (mailing list archive)
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Series Add support for EMC2305 Fan Speed Controller. | expand

Message

Michael Shych June 23, 2022, 4:52 p.m. UTC 
From: Michael Shych <michaelsh@nvidia.com>

Introduce EMC2305 RPM-based PWM Fan Speed Controller
The EMC2305 is an SMBus compliant fan controller with up to five
controlled PWM fan drivers. All fan drivers are
controlled by a programmable frequency PWM driver and Fan Speed
Control algorithm that operates as a directly PWM-controlled device.

The closed-loop Fan Speed Control algorithm (FSC) has the capability to
detect aging fans and alert the system. It will likewise detect stalled
or locked fans and trigger an interrupt.

EMC2305 offers a clock output so that multiple devices may be chained
and slaved to the same clock source for optimal performance in large
distributed systems.

Patch set includes:
Patch#1 - add support for EMC2301/2/3/5 RPM-based PWM Fan Speed Controller.
Patch#2 - add microchip,emc2306.yaml
Patch#3 - add emc2305.rst into docs.

Michael Shych (3):
  hwmon: (emc2305) add support for EMC2301/2/3/5 RPM-based PWM Fan Speed
    Controller.
  dt-bindings: hwmon: add Microchip EMC2305 fan controller.
  docs: hwmon: add emc2305.rst to docs

 .../bindings/hwmon/microchip,emc2305.yaml          | 106 ++++
 Documentation/hwmon/emc2305.rst                    |  40 ++
 Documentation/hwmon/index.rst                      |   1 +
 drivers/hwmon/Kconfig                              |  13 +
 drivers/hwmon/Makefile                             |   1 +
 drivers/hwmon/emc2305.c                            | 676 +++++++++++++++++++++
 6 files changed, 837 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml
 create mode 100644 Documentation/hwmon/emc2305.rst
 create mode 100644 drivers/hwmon/emc2305.c