diff options
58 files changed, 2705 insertions, 467 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio index 6aef7dbbde44..680451695422 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio +++ b/Documentation/ABI/testing/sysfs-bus-iio @@ -61,8 +61,11 @@ What: /sys/bus/iio/devices/triggerX/sampling_frequency_available KernelVersion: 2.6.35 Contact: linux-iio@vger.kernel.org Description: - When the internal sampling clock can only take a small - discrete set of values, this file lists those available. + When the internal sampling clock can only take a specific set of + frequencies, we can specify the available values with: + - a small discrete set of values like "0 2 4 6 8" + - a range with minimum, step and maximum frequencies like + "[min step max]" What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio KernelVersion: 2.6.38 diff --git a/Documentation/ABI/testing/sysfs-bus-iio-frequency-adf4371 b/Documentation/ABI/testing/sysfs-bus-iio-frequency-adf4371 new file mode 100644 index 000000000000..302de64cb424 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-iio-frequency-adf4371 @@ -0,0 +1,44 @@ +What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency +KernelVersion: +Contact: linux-iio@vger.kernel.org +Description: + Stores the PLL frequency in Hz for channel Y. + Reading returns the actual frequency in Hz. + The ADF4371 has an integrated VCO with fundamendal output + frequency ranging from 4000000000 Hz 8000000000 Hz. + + out_altvoltage0_frequency: + A divide by 1, 2, 4, 8, 16, 32 or circuit generates + frequencies from 62500000 Hz to 8000000000 Hz. + out_altvoltage1_frequency: + This channel duplicates the channel 0 frequency + out_altvoltage2_frequency: + A frequency doubler generates frequencies from + 8000000000 Hz to 16000000000 Hz. + out_altvoltage3_frequency: + A frequency quadrupler generates frequencies from + 16000000000 Hz to 32000000000 Hz. + + Note: writes to one of the channels will affect the frequency of + all the other channels, since it involves changing the VCO + fundamental output frequency. + +What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_name +KernelVersion: +Contact: linux-iio@vger.kernel.org +Description: + Reading returns the datasheet name for channel Y: + + out_altvoltage0_name: RF8x + out_altvoltage1_name: RFAUX8x + out_altvoltage2_name: RF16x + out_altvoltage3_name: RF32x + +What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown +KernelVersion: +Contact: linux-iio@vger.kernel.org +Description: + This attribute allows the user to power down the PLL and it's + RFOut buffers. + Writing 1 causes the specified channel to power down. + Clearing returns to normal operation. diff --git a/Documentation/devicetree/bindings/iio/accel/adi,adxl372.yaml b/Documentation/devicetree/bindings/iio/accel/adi,adxl372.yaml new file mode 100644 index 000000000000..a7fafb9bf5c6 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/accel/adi,adxl372.yaml @@ -0,0 +1,63 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/accelerometers/adi,adxl372.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices ADXL372 3-Axis, +/-(200g) Digital Accelerometer + +maintainers: + - Stefan Popa <stefan.popa@analog.com> + +description: | + Analog Devices ADXL372 3-Axis, +/-(200g) Digital Accelerometer that supports + both I2C & SPI interfaces + https://www.analog.com/en/products/adxl372.html + +properties: + compatible: + enum: + - adi,adxl372 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/interrupt-controller/irq.h> + i2c0 { + #address-cells = <1>; + #size-cells = <0>; + + /* Example for a I2C device node */ + accelerometer@53 { + compatible = "adi,adxl372"; + reg = <0x53>; + interrupt-parent = <&gpio>; + interrupts = <25 IRQ_TYPE_EDGE_FALLING>; + }; + }; + - | + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/interrupt-controller/irq.h> + spi0 { + #address-cells = <1>; + #size-cells = <0>; + + accelerometer@0 { + compatible = "adi,adxl372"; + reg = <0>; + spi-max-frequency = <1000000>; + interrupt-parent = <&gpio>; + interrupts = <25 IRQ_TYPE_EDGE_FALLING>; + }; + }; diff --git a/Documentation/devicetree/bindings/iio/accel/adxl372.txt b/Documentation/devicetree/bindings/iio/accel/adxl372.txt deleted file mode 100644 index a289964756a7..000000000000 --- a/Documentation/devicetree/bindings/iio/accel/adxl372.txt +++ /dev/null @@ -1,33 +0,0 @@ -Analog Devices ADXL372 3-Axis, +/-(200g) Digital Accelerometer - -http://www.analog.com/media/en/technical-documentation/data-sheets/adxl372.pdf - -Required properties: - - compatible : should be "adi,adxl372" - - reg: the I2C address or SPI chip select number for the device - -Required properties for SPI bus usage: - - spi-max-frequency: Max SPI frequency to use - -Optional properties: - - interrupts: interrupt mapping for IRQ as documented in - Documentation/devicetree/bindings/interrupt-controller/interrupts.txt - -Example for a I2C device node: - - accelerometer@53 { - compatible = "adi,adxl372"; - reg = <0x53>; - interrupt-parent = <&gpio>; - interrupts = <25 IRQ_TYPE_EDGE_FALLING>; - }; - -Example for a SPI device node: - - accelerometer@0 { - compatible = "adi,adxl372"; - reg = <0>; - spi-max-frequency = <1000000>; - interrupt-parent = <&gpio>; - interrupts = <25 IRQ_TYPE_EDGE_FALLING>; - }; diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7124.txt b/Documentation/devicetree/bindings/iio/adc/adi,ad7124.txt deleted file mode 100644 index 416273dce569..000000000000 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7124.txt +++ /dev/null @@ -1,75 +0,0 @@ -Analog Devices AD7124 ADC device driver - -Required properties for the AD7124: - - compatible: Must be one of "adi,ad7124-4" or "adi,ad7124-8" - - reg: SPI chip select number for the device - - spi-max-frequency: Max SPI frequency to use - see: Documentation/devicetree/bindings/spi/spi-bus.txt - - clocks: phandle to the master clock (mclk) - see: Documentation/devicetree/bindings/clock/clock-bindings.txt - - clock-names: Must be "mclk". - - interrupts: IRQ line for the ADC - see: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt - - Required properties: - * #address-cells: Must be 1. - * #size-cells: Must be 0. - - Subnode(s) represent the external channels which are connected to the ADC. - Each subnode represents one channel and has the following properties: - Required properties: - * reg: The channel number. It can have up to 4 channels on ad7124-4 - and 8 channels on ad7124-8, numbered from 0 to 15. - * diff-channels: see: Documentation/devicetree/bindings/iio/adc/adc.txt - - Optional properties: - * bipolar: see: Documentation/devicetree/bindings/iio/adc/adc.txt - * adi,reference-select: Select the reference source to use when - converting on the the specific channel. Valid values are: - 0: REFIN1(+)/REFIN1(−). - 1: REFIN2(+)/REFIN2(−). - 3: AVDD - If this field is left empty, internal reference is selected. - -Optional properties: - - refin1-supply: refin1 supply can be used as reference for conversion. - - refin2-supply: refin2 supply can be used as reference for conversion. - - avdd-supply: avdd supply can be used as reference for conversion. - -Example: - adc@0 { - compatible = "adi,ad7124-4"; - reg = <0>; - spi-max-frequency = <5000000>; - interrupts = <25 2>; - interrupt-parent = <&gpio>; - refin1-supply = <&adc_vref>; - clocks = <&ad7124_mclk>; - clock-names = "mclk"; - - #address-cells = <1>; - #size-cells = <0>; - - channel@0 { - reg = <0>; - diff-channels = <0 1>; - adi,reference-select = <0>; - }; - - channel@1 { - reg = <1>; - bipolar; - diff-channels = <2 3>; - adi,reference-select = <0>; - }; - - channel@2 { - reg = <2>; - diff-channels = <4 5>; - }; - - channel@3 { - reg = <3>; - diff-channels = <6 7>; - }; - }; diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml new file mode 100644 index 000000000000..cf494a08b837 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7124.yaml @@ -0,0 +1,155 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright 2019 Analog Devices Inc. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/bindings/iio/adc/adi,ad7124.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD7124 ADC device driver + +maintainers: + - Stefan Popa <stefan.popa@analog.com> + +description: | + Bindings for the Analog Devices AD7124 ADC device. Datasheet can be + found here: + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7124-8.pdf + +properties: + compatible: + enum: + - adi,ad7124-4 + - adi,ad7124-8 + + reg: + description: SPI chip select number for the device + maxItems: 1 + + clocks: + maxItems: 1 + description: phandle to the master clock (mclk) + + clock-names: + items: + - const: mclk + + interrupts: + description: IRQ line for the ADC + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + refin1-supply: + description: refin1 supply can be used as reference for conversion. + maxItems: 1 + + refin2-supply: + description: refin2 supply can be used as reference for conversion. + maxItems: 1 + + avdd-supply: + description: avdd supply can be used as reference for conversion. + maxItems: 1 + +required: + - compatible + - reg + - clocks + - clock-names + - interrupts + +patternProperties: + "^channel@([0-9]|1[0-5])$": + type: object + description: | + Represents the external channels which are connected to the ADC. + See Documentation/devicetree/bindings/iio/adc/adc.txt. + + properties: + reg: + description: | + The channel number. It can have up to 8 channels on ad7124-4 + and 16 channels on ad7124-8, numbered from 0 to 15. + items: + minimum: 0 + maximum: 15 + + adi,reference-select: + description: | + Select the reference source to use when converting on + the specific channel. Valid values are: + 0: REFIN1(+)/REFIN1(−). + 1: REFIN2(+)/REFIN2(−). + 3: AVDD + If this field is left empty, internal reference is selected. + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + - enum: [0, 1, 3] + + diff-channels: + description: see Documentation/devicetree/bindings/iio/adc/adc.txt + items: + minimum: 0 + maximum: 15 + + bipolar: + description: see Documentation/devicetree/bindings/iio/adc/adc.txt + type: boolean + + adi,buffered-positive: + description: Enable buffered mode for positive input. + type: boolean + + adi,buffered-negative: + description: Enable buffered mode for negative input. + type: boolean + + required: + - reg + - diff-channels + +examples: + - | + adc@0 { + compatible = "adi,ad7124-4"; + reg = <0>; + spi-max-frequency = <5000000>; + interrupts = <25 2>; + interrupt-parent = <&gpio>; + refin1-supply = <&adc_vref>; + clocks = <&ad7124_mclk>; + clock-names = "mclk"; + + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0>; + diff-channels = <0 1>; + adi,reference-select = <0>; + adi,buffered-positive; + }; + + channel@1 { + reg = <1>; + bipolar; + diff-channels = <2 3>; + adi,reference-select = <0>; + adi,buffered-positive; + adi,buffered-negative; + }; + + channel@2 { + reg = <2>; + diff-channels = <4 5>; + }; + + channel@3 { + reg = <3>; + diff-channels = <6 7>; + }; + }; diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7780.txt b/Documentation/devicetree/bindings/iio/adc/adi,ad7780.txt deleted file mode 100644 index 440e52555349..000000000000 --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7780.txt +++ /dev/null @@ -1,48 +0,0 @@ -* Analog Devices AD7170/AD7171/AD7780/AD7781 - -Data sheets: - -- AD7170: - * https://www.analog.com/media/en/technical-documentation/data-sheets/AD7170.pdf -- AD7171: - * https://www.analog.com/media/en/technical-documentation/data-sheets/AD7171.pdf -- AD7780: - * https://www.analog.com/media/en/technical-documentation/data-sheets/ad7780.pdf -- AD7781: - * https://www.analog.com/media/en/technical-documentation/data-sheets/AD7781.pdf - -Required properties: - -- compatible: should be one of - * "adi,ad7170" - * "adi,ad7171" - * "adi,ad7780" - * "adi,ad7781" -- reg: spi chip select number for the device -- vref-supply: the regulator supply for the ADC reference voltage - -Optional properties: - -- powerdown-gpios: must be the device tree identifier of the PDRST pin. If - specified, it will be asserted during driver probe. As the - line is active high, it should be marked GPIO_ACTIVE_HIGH. -- adi,gain-gpios: must be the device tree identifier of the GAIN pin. Only for - the ad778x chips. If specified, it will be asserted during - driver probe. As the line is active low, it should be marked - GPIO_ACTIVE_LOW. -- adi,filter-gpios: must be the device tree identifier of the FILTER pin. Only - for the ad778x chips. If specified, it will be asserted - during driver probe. As the line is active low, it should be - marked GPIO_ACTIVE_LOW. - -Example: - -adc@0 { - compatible = "adi,ad7780"; - reg = <0>; - vref-supply = <&vdd_supply> - - powerdown-gpios = <&gpio 12 GPIO_ACTIVE_HIGH>; - adi,gain-gpios = <&gpio 5 GPIO_ACTIVE_LOW>; - adi,filter-gpios = <&gpio 15 GPIO_ACTIVE_LOW>; -}; diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7780.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7780.yaml new file mode 100644 index 000000000000..d1109416963c --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7780.yaml @@ -0,0 +1,87 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/adi,ad7780.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD7170/AD7171/AD7780/AD7781 analog to digital converters + +maintainers: + - Michael Hennerich <michael.hennerich@analog.com> + +description: | + The ad7780 is a sigma-delta analog to digital converter. This driver provides + reading voltage values and status bits from both the ad778x and ad717x series. + Its interface also allows writing on the FILTER and GAIN GPIO pins on the + ad778x. + + Specifications on the converters can be found at: + AD7170: + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7170.pdf + AD7171: + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7171.pdf + AD7780: + https://www.analog.com/media/en/technical-documentation/data-sheets/ad7780.pdf + AD7781: + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7781.pdf + +properties: + compatible: + enum: + - adi,ad7170 + - adi,ad7171 + - adi,ad7780 + - adi,ad7781 + + reg: + maxItems: 1 + + avdd-supply: + description: + The regulator supply for the ADC reference voltage. + maxItems: 1 + + powerdown-gpios: + description: + Must be the device tree identifier of the PDRST pin. If + specified, it will be asserted during driver probe. As the + line is active high, it should be marked GPIO_ACTIVE_HIGH. + maxItems: 1 + + adi,gain-gpios: + description: + Must be the device tree identifier of the GAIN pin. Only for + the ad778x chips. If specified, it will be asserted during + driver probe. As the line is active low, it should be marked + GPIO_ACTIVE_LOW. + maxItems: 1 + + adi,filter-gpios: + description: + Must be the device tree identifier of the FILTER pin. Only + for the ad778x chips. If specified, it will be asserted + during driver probe. As the line is active low, it should be + marked GPIO_ACTIVE_LOW. + maxItems: 1 + +required: + - compatible + - reg + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + spi0 { + #address-cells = <1>; + #size-cells = <0>; + + adc@0 { + compatible = "adi,ad7780"; + reg = <0>; + + avdd-supply = <&vdd_supply>; + powerdown-gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>; + adi,gain-gpios = <&gpio1 5 GPIO_ACTIVE_LOW>; + adi,filter-gpios = <&gpio2 15 GPIO_ACTIVE_LOW>; + }; + }; diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt index 8346bcb04ad7..93a0bd2efc05 100644 --- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt +++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt @@ -38,6 +38,7 @@ Required properties: It's required on stm32h7. - clock-names: Must be "adc" and/or "bus" depending on part used. - interrupt-controller: Identifies the controller node as interrupt-parent +- vdda-supply: Phandle to the vdda input analog voltage. - vref-supply: Phandle to the vref input analog reference voltage. - #interrupt-cells = <1>; - #address-cells = <1>; diff --git a/Documentation/devicetree/bindings/iio/chemical/sensirion,sps30.txt b/Documentation/devicetree/bindings/iio/chemical/sensirion,sps30.txt deleted file mode 100644 index 6eee2709b5b6..000000000000 --- a/Documentation/devicetree/bindings/iio/chemical/sensirion,sps30.txt +++ /dev/null @@ -1,12 +0,0 @@ -* Sensirion SPS30 particulate matter sensor - -Required properties: -- compatible: must be "sensirion,sps30" -- reg: the I2C address of the sensor - -Example: - -sps30@69 { - compatible = "sensirion,sps30"; - reg = <0x69>; -}; diff --git a/Documentation/devicetree/bindings/iio/chemical/sensirion,sps30.yaml b/Documentation/devicetree/bindings/iio/chemical/sensirion,sps30.yaml new file mode 100644 index 000000000000..50a50a0d7070 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/chemical/sensirion,sps30.yaml @@ -0,0 +1,39 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/chemical/sensirion,sps30.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Sensirion SPS30 particulate matter sensor + +maintainers: + - Tomasz Duszynski <tduszyns@gmail.com> + +description: | + Air pollution sensor capable of measuring mass concentration of dust + particles. + +properties: + compatible: + enum: + - sensirion,sps30 + reg: + maxItems: 1 + +required: + - compatible + - reg + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + air-pollution-sensor@69 { + compatible = "sensirion,sps30"; + reg = <0x69>; + }; + }; + +... diff --git a/Documentation/devicetree/bindings/iio/frequency/adf4371.yaml b/Documentation/devicetree/bindings/iio/frequency/adf4371.yaml new file mode 100644 index 000000000000..7ec3ec94356b --- /dev/null +++ b/Documentation/devicetree/bindings/iio/frequency/adf4371.yaml @@ -0,0 +1,63 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/frequency/adf4371.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices ADF4371/ADF4372 Wideband Synthesizers + +maintainers: + - Popa Stefan <stefan.popa@analog.com> + |