On Mon, Sep 14, 2020 at 06:48:01PM +0300, Dmitry Baryshkov wrote: > Add bindings for thermal monitor, part of Qualcomm PMIC5 chips. It is a > close counterpart of VADC part of those PMICs. > > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> > Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> > --- > .../bindings/thermal/qcom-spmi-adc-tm5.yaml | 151 ++++++++++++++++++ > 1 file changed, 151 insertions(+) > create mode 100644 Documentation/devicetree/bindings/thermal/qcom-spmi-adc-tm5.yaml > > diff --git a/Documentation/devicetree/bindings/thermal/qcom-spmi-adc-tm5.yaml b/Documentation/devicetree/bindings/thermal/qcom-spmi-adc-tm5.yaml > new file mode 100644 > index 000000000000..432a65839b89 > --- /dev/null > +++ b/Documentation/devicetree/bindings/thermal/qcom-spmi-adc-tm5.yaml > @@ -0,0 +1,151 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/thermal/qcom-spmi-adc-tm5.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Qualcomm's SPMI PMIC ADC Thermal Monitoring > +maintainers: > + - Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> > + > +properties: > + compatible: > + const: qcom,spmi-adc-tm5 > + > + reg: > + maxItems: 1 > + > + interrupts: > + maxItems: 1 > + > + "#thermal-sensor-cells": > + const: 1 > + description: > + Number of cells required to uniquely identify the thermal sensors. Since > + we have multiple sensors this is set to 1 > + > + "#address-cells": > + const: 1 > + > + "#size-cells": > + const: 0 > + > + qcom,avg-samples: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: Number of samples to be used for measurement. > + enum: > + - 1 > + - 2 > + - 4 > + - 8 > + - 16 > + default: 1 > + > + qcom,decimation: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: This parameter is used to decrease ADC sampling rate. > + Quicker measurements can be made by reducing decimation ratio. > + enum: > + - 250 > + - 420 > + - 840 > + default: 840 > + > +patternProperties: > + "^([-a-z0-9]*)@[0-9]+$": Less than 10 as unit-addresses are hex? > + type: object > + description: > + Represent one thermal sensor. > + > + properties: > + reg: > + description: Specify the sensor channel. > + maxItems: 1 You need a range of values here. > + > + io-channels: > + description: > + From common IIO binding. Used to pipe PMIC ADC channel to thermal monitor > + > + qcom,adc-channel: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: Corresponding ADC channel ID. Why is this not a cell in io-channels? > + > + qcom,ratiometric: > + $ref: /schemas/types.yaml#/definitions/flag > + description: > + Channel calibration type. > + If this property is specified VADC will use the VDD reference > + (1.875V) and GND for channel calibration. If property is not found, > + channel will be calibrated with 0V and 1.25V reference channels, > + also known as absolute calibration. > + > + qcom,hw-settle-time: > + $ref: /schemas/types.yaml#/definitions/uint32 > + description: Time between AMUX getting configured and the ADC starting conversion. Time values should have a unit suffix. Seems like a commmon ADC property... > + > + qcom,pre-scaling: > + $ref: /schemas/types.yaml#/definitions/uint32-array > + description: Used for scaling the channel input signal before the > + signal is fed to VADC. See qcom,spi-vadc specification for the list > + of possible values. I'd rather not. Need the values here to validate a DT. > + minItems: 2 > + maxItems: 2 > + > + required: > + - reg > + - qcom,adc-channel > + > + additionalProperties: > + false > + > +required: > + - compatible > + - reg > + - interrupts > + - "#address-cells" > + - "#size-cells" > + - "#thermal-sensor-cells" > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/iio/qcom,spmi-vadc.h> > + #include <dt-bindings/interrupt-controller/irq.h> > + spmi_bus { > + #address-cells = <1>; > + #size-cells = <0>; > + pm8150b_adc: adc@3100 { > + reg = <0x3100>; > + compatible = "qcom,spmi-adc5"; > + #address-cells = <1>; > + #size-cells = <0>; > + #io-channel-cells = <1>; > + io-channel-ranges; > + > + /* Other propreties are omitted */ > + conn-therm@4f { > + reg = <ADC5_AMUX_THM3_100K_PU>; > + qcom,ratiometric; > + qcom,hw-settle-time = <200>; > + }; > + }; > + > + pm8150b_adc_tm: adc-tm@3500 { > + compatible = "qcom,spmi-adc-tm5"; > + reg = <0x3500>; > + interrupts = <0x2 0x35 0x0 IRQ_TYPE_EDGE_RISING>; > + #thermal-sensor-cells = <1>; > + #address-cells = <1>; > + #size-cells = <0>; > + > + conn-therm@0 { > + reg = <0>; > + io-channels = <&pm8150b_adc ADC5_AMUX_THM3_100K_PU>; > + qcom,adc-channel = <ADC5_AMUX_THM3_100K_PU>; > + qcom,ratiometric; > + qcom,hw-settle-time = <200>; > + }; > + }; > + }; > +... > -- > 2.28.0 >
