| Message ID | 1545049420-16484-7-git-send-email-stefan.popa@analog.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | staging: iio: ad7606: Move out of staging | expand |
On Mon, 17 Dec 2018 14:23:40 +0200 Stefan Popa <stefan.popa@analog.com> wrote: > Document support for AD7606 Analog to Digital Converter. > > Signed-off-by: Stefan Popa <stefan.popa@analog.com> > Reviewed-by: Rob Herring <robh@kernel.org> Applied to the togreg branch of iio.git and pushed out as testing for this to be mostly ignored. Thanks, Jonathan > --- > .../devicetree/bindings/iio/adc/adi,ad7606.txt | 65 ++++++++++++++++++++++ > MAINTAINERS | 1 + > 2 files changed, 66 insertions(+) > create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt > > diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt > new file mode 100644 > index 0000000..d7b6241 > --- /dev/null > +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt > @@ -0,0 +1,65 @@ > +Analog Devices AD7606 Simultaneous Sampling ADC > + > +Required properties for the AD7606: > + > +- compatible: Must be one of > + * "adi,ad7605-4" > + * "adi,ad7606-8" > + * "adi,ad7606-6" > + * "adi,ad7606-4" > +- reg: SPI chip select number for the device > +- spi-max-frequency: Max SPI frequency to use > + see: Documentation/devicetree/bindings/spi/spi-bus.txt > +- spi-cpha: See Documentation/devicetree/bindings/spi/spi-bus.txt > +- avcc-supply: phandle to the Avcc power supply > +- interrupts: IRQ line for the ADC > + see: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt > +- adi,conversion-start-gpios: must be the device tree identifier of the CONVST pin. > + This logic input is used to initiate conversions on the analog > + input channels. As the line is active high, it should be marked > + GPIO_ACTIVE_HIGH. > + > +Optional properties: > + > +- reset-gpios: must be the device tree identifier of the RESET pin. If specified, > + it will be asserted during driver probe. As the line is active high, > + it should be marked GPIO_ACTIVE_HIGH. > +- standby-gpios: must be the device tree identifier of the STBY pin. This pin is used > + to place the AD7606 into one of two power-down modes, Standby mode or > + Shutdown mode. As the line is active low, it should be marked > + GPIO_ACTIVE_LOW. > +- adi,first-data-gpios: must be the device tree identifier of the FRSTDATA pin. > + The FRSTDATA output indicates when the first channel, V1, is > + being read back on either the parallel, byte or serial interface. > + As the line is active high, it should be marked GPIO_ACTIVE_HIGH. > +- adi,range-gpios: must be the device tree identifier of the RANGE pin. The polarity on > + this pin determines the input range of the analog input channels. If > + this pin is tied to a logic high, the analog input range is ±10V for > + all channels. If this pin is tied to a logic low, the analog input range > + is ±5V for all channels. As the line is active high, it should be marked > + GPIO_ACTIVE_HIGH. > +- adi,oversampling-ratio-gpios: must be the device tree identifier of the over-sampling > + mode pins. As the line is active high, it should be marked > + GPIO_ACTIVE_HIGH. > + > +Example: > + > + adc@0 { > + compatible = "adi,ad7606-8"; > + reg = <0>; > + spi-max-frequency = <1000000>; > + spi-cpol; > + > + avcc-supply = <&adc_vref>; > + > + interrupts = <25 IRQ_TYPE_EDGE_FALLING>; > + interrupt-parent = <&gpio>; > + > + adi,conversion-start-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>; > + reset-gpios = <&gpio 27 GPIO_ACTIVE_HIGH>; > + adi,first-data-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>; > + adi,oversampling-ratio-gpios = <&gpio 18 GPIO_ACTIVE_HIGH > + &gpio 23 GPIO_ACTIVE_HIGH > + &gpio 26 GPIO_ACTIVE_HIGH>; > + standby-gpios = <&gpio 24 GPIO_ACTIVE_LOW>; > + }; > diff --git a/MAINTAINERS b/MAINTAINERS > index bc9f816..d039f66 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -860,6 +860,7 @@ L: linux-iio@vger.kernel.org > W: http://ez.analog.com/community/linux-device-drivers > S: Supported > F: drivers/iio/adc/ad7606.c > +F: Documentation/devicetree/bindings/iio/adc/ad7606.txt > > ANALOG DEVICES INC AD9389B DRIVER > M: Hans Verkuil <hans.verkuil@cisco.com>
diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt new file mode 100644 index 0000000..d7b6241 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt @@ -0,0 +1,65 @@ +Analog Devices AD7606 Simultaneous Sampling ADC + +Required properties for the AD7606: + +- compatible: Must be one of + * "adi,ad7605-4" + * "adi,ad7606-8" + * "adi,ad7606-6" + * "adi,ad7606-4" +- reg: SPI chip select number for the device +- spi-max-frequency: Max SPI frequency to use + see: Documentation/devicetree/bindings/spi/spi-bus.txt +- spi-cpha: See Documentation/devicetree/bindings/spi/spi-bus.txt +- avcc-supply: phandle to the Avcc power supply +- interrupts: IRQ line for the ADC + see: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt +- adi,conversion-start-gpios: must be the device tree identifier of the CONVST pin. + This logic input is used to initiate conversions on the analog + input channels. As the line is active high, it should be marked + GPIO_ACTIVE_HIGH. + +Optional properties: + +- reset-gpios: must be the device tree identifier of the RESET pin. If specified, + it will be asserted during driver probe. As the line is active high, + it should be marked GPIO_ACTIVE_HIGH. +- standby-gpios: must be the device tree identifier of the STBY pin. This pin is used + to place the AD7606 into one of two power-down modes, Standby mode or + Shutdown mode. As the line is active low, it should be marked + GPIO_ACTIVE_LOW. +- adi,first-data-gpios: must be the device tree identifier of the FRSTDATA pin. + The FRSTDATA output indicates when the first channel, V1, is + being read back on either the parallel, byte or serial interface. + As the line is active high, it should be marked GPIO_ACTIVE_HIGH. +- adi,range-gpios: must be the device tree identifier of the RANGE pin. The polarity on + this pin determines the input range of the analog input channels. If + this pin is tied to a logic high, the analog input range is ±10V for + all channels. If this pin is tied to a logic low, the analog input range + is ±5V for all channels. As the line is active high, it should be marked + GPIO_ACTIVE_HIGH. +- adi,oversampling-ratio-gpios: must be the device tree identifier of the over-sampling + mode pins. As the line is active high, it should be marked + GPIO_ACTIVE_HIGH. + +Example: + + adc@0 { + compatible = "adi,ad7606-8"; + reg = <0>; + spi-max-frequency = <1000000>; + spi-cpol; + + avcc-supply = <&adc_vref>; + + interrupts = <25 IRQ_TYPE_EDGE_FALLING>; + interrupt-parent = <&gpio>; + + adi,conversion-start-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>; + reset-gpios = <&gpio 27 GPIO_ACTIVE_HIGH>; + adi,first-data-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>; + adi,oversampling-ratio-gpios = <&gpio 18 GPIO_ACTIVE_HIGH + &gpio 23 GPIO_ACTIVE_HIGH + &gpio 26 GPIO_ACTIVE_HIGH>; + standby-gpios = <&gpio 24 GPIO_ACTIVE_LOW>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index bc9f816..d039f66 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -860,6 +860,7 @@ L: linux-iio@vger.kernel.org W: http://ez.analog.com/community/linux-device-drivers S: Supported F: drivers/iio/adc/ad7606.c +F: Documentation/devicetree/bindings/iio/adc/ad7606.txt ANALOG DEVICES INC AD9389B DRIVER M: Hans Verkuil <hans.verkuil@cisco.com>