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Signed-off-by: Chanh Nguyen --- .../devicetree/bindings/hwmon/max31790.yaml | 44 +++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwmon/max31790.yaml diff --git a/Documentation/devicetree/bindings/hwmon/max31790.yaml b/Documentation/devicetree/bindings/hwmon/max31790.yaml new file mode 100644 index 000000000000..5a93e6bdebda --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/max31790.yaml @@ -0,0 +1,44 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/hwmon/max31790.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: The Maxim MAX31790 Fan Controller + +maintainers: + - Jean Delvare + - Guenter Roeck + +description: > + The MAX31790 controls the speeds of up to six fans using six + independent PWM outputs. The desired fan speeds (or PWM duty cycles) + are written through the I2C interface. + + Datasheets: + https://datasheets.maximintegrated.com/en/ds/MAX31790.pdf + +properties: + compatible: + const: maxim,max31790 + + reg: + maxItems: 1 + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + max31790@20 { + compatible = "maxim,max31790"; + reg = <0x20>; + }; + }; From patchwork Mon Mar 11 11:13:47 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chanh Nguyen X-Patchwork-Id: 1910389 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=os.amperecomputing.com header.i=@os.amperecomputing.com header.a=rsa-sha256 header.s=selector2 header.b=s1G90KTj; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; 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Signed-off-by: Chanh Nguyen --- Documentation/devicetree/bindings/hwmon/max31790.yaml | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/devicetree/bindings/hwmon/max31790.yaml b/Documentation/devicetree/bindings/hwmon/max31790.yaml index 5a93e6bdebda..447cac17053a 100644 --- a/Documentation/devicetree/bindings/hwmon/max31790.yaml +++ b/Documentation/devicetree/bindings/hwmon/max31790.yaml @@ -25,6 +25,16 @@ properties: reg: maxItems: 1 + pwmout-pin-as-tach-input: + description: | + An array of six integers responds to six PWM channels for + configuring the pwm to tach mode. + When set to 0, the associated PWMOUT produces a PWM waveform for + control of fan speed. When set to 1, PWMOUT becomes a TACH input + $ref: /schemas/types.yaml#/definitions/uint8-array + maxItems: 6 + minItems: 6 + required: - compatible - reg @@ -40,5 +50,6 @@ examples: max31790@20 { compatible = "maxim,max31790"; reg = <0x20>; + pwmout-pin-as-tach-input = /bits/ 8 <0 0 0 0 1 1>; }; };