[PATCH v6 0/3] Add OF support for Microchip emc2305 fan controller

florin.leotescu
2025-03-21T14:26:17Z

This patch series add initial OF support for Microchip emc2305 fan controller.

Changes since v5:
- Corrected blank line as recommended by Krzysztof Kozlowski.
- Removed pwms property from required list as Guenter Roeck suggested.
The pwms should not be mandatory as the driver works fine with defaults settings.

Changes since v4:
- Corrected quotes to have a consistent definition.
- Corrected DTS coding style as recommended by Krzysztof Kozlowski.
- Updated pwms phandle to include pwm frequency, pwm polarity and pwm output,
as recommended by Guenter Roeck and skipped the pwm channel as recommended by Krzysztof Kozlowski.
- Documented the pwms args in #pwm-cells description.
- Updated pwms phandle in dt-binding example to include pwm frequency and
use PWM_POLARITY_INVERTED macro to inverse the PWM polarity.

Changes since v3:
- Removed thermal_cooling_device_register_fail label since is no longer needed
and replaced goto with imediate return, as recommended by Guenter Roeck.
- Redefined compatible property in dt-binding, as recommended by Frank Li.
- Updated driver of compatible list.
- Renamed node name in the dt-binding example, as recommended by Connor Dooley.
- Corrected dt-binding commit subject.
- Added dt-binding fan descriptions and $ref to fan schema,
as Connor Dooley & Krzysztof Kozlowski recommended.
Used similar as on maxim,max6639 and nuvoton,nct7363.
- Updated dt-binding example.

Changes since v2:
- Removed the introduction of new properties for now and we only
enable basic OF support.
- Link to previous version:
https://lore.kernel.org/linux-arm-kernel/20250219133221.2641041-3-florin.leotescu@oss.nxp.com/T/

Florin Leotescu (3):
dt-bindings: hwmon: Add Microchip emc2305 support
hwmon: emc2305: Add OF support
hwmon: emc2305: Use devm_thermal_of_cooling_device_register

.../bindings/hwmon/microchip,emc2305.yaml | 110 ++++++++++++++++++
drivers/hwmon/emc2305.c | 38 ++----
2 files changed, 120 insertions(+), 28 deletions(-)
create mode 100644 Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml

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2.34.1