From: Marcello Sylvester Bauer <sylv@xxxxxxx> Add Devicetree binding documentation for Maxim MAX6639 temperature monitor with PWM fan-speed controller. Signed-off-by: Marcello Sylvester Bauer <sylv@xxxxxxx> Signed-off-by: Naresh Solanki <Naresh.Solanki@xxxxxxxxxxxxx> --- .../bindings/hwmon/maxim,max6639.yaml | 116 ++++++++++++++++++ 1 file changed, 116 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwmon/maxim,max6639.yaml diff --git a/Documentation/devicetree/bindings/hwmon/maxim,max6639.yaml b/Documentation/devicetree/bindings/hwmon/maxim,max6639.yaml new file mode 100644 index 000000000000..bbefb0a57ab3 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/maxim,max6639.yaml @@ -0,0 +1,116 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- + +$id: http://devicetree.org/schemas/hwmon/maxim,max6639.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Maxim max6639 + +maintainers: + - Roland Stigge <stigge@xxxxxxxxx> + +description: | + The MAX6639 is a 2-channel temperature monitor with dual, automatic, PWM + fan-speed controller. It monitors its own temperature and one external + diode-connected transistor or the temperatures of two external diode-connected + transistors, typically available in CPUs, FPGAs, or GPUs. + + Datasheets: + https://datasheets.maximintegrated.com/en/ds/MAX6639-MAX6639F.pdf + +properties: + compatible: + enum: + - maxim,max6639 + + reg: + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + +required: + - compatible + - reg + +patternProperties: + "^ot[0-1]_indication$": + type: boolean + default: false + description: + If true then enable OT pin indication. + + "^therm[0-1]_indication$": + type: boolean + default: false + description: + If true then enable THERM pin indication. + + "^fan@[0-1]$": + type: object + description: | + Represents the two fans and their specific configuration. + + $ref: fan-common.yaml# + + properties: + reg: + description: | + The fan number. + items: + minimum: 0 + maximum: 1 + + maxim,fan-spin-up: + type: boolean + description: + If true then whnever the fan starts up from zero drive, it + is driven with 100% duty cycle for 2s to ensure that it + starts. + + maxim,full-speed-on-therm: + type: boolean + description: + If true then force fan to full speed if THERM pin goes low. + + maxim,fanfail_indication: + type: boolean + description: + If true then enable fanfail pin indication. + required: + - reg + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + max6639@10 { + compatible = "maxim,max6639"; + reg = <0x10>; + #address-cells = <1>; + #size-cells = <0>; + + fan@0 { + reg = <0x0>; + pulses-per-revolution = <2>; + max-rpm = <4000>; + pwm-frequency = <25000>; + }; + + fan@1 { + reg = <0x1>; + pulses-per-revolution = <2>; + max-rpm = <32000>; + pwm-frequency = <25000>; + }; + }; + }; +... -- 2.37.3
