Document support for AD7606 Analog to Digital Converter.
Signed-off-by: Stefan Popa <[email protected]>
---
Changes in v2:
- fixed indentation issues.
- used gpios instead of gpio.
- added vendor prefix for conversion-start-gpios, first-data-gpios,
and range-gpios.
Changes in v3:
- Added adi,oversampling-ratio-gpios.
.../devicetree/bindings/iio/adc/adi,ad7606.txt | 54 ++++++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 55 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..02fae23
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt
@@ -0,0 +1,54 @@
+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.
+
+Optional properties:
+
+- reset-gpios: must be the device tree identifier of the RESET pin. If specified,
+ it will be asserted during driver probe.
+- 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.
+- 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.
+- 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.
+
+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 0>;
+ reset-gpios = <&gpio 27 0>;
+ adi,first-data-gpios = <&gpio 22 0>;
+ standby-gpios = <&gpio 24 0>;
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 843545d..6d63db4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -845,6 +845,7 @@ L: [email protected]
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 <[email protected]>
--
2.7.4
On Thu, 29 Nov 2018 18:57:43 +0200
Stefan Popa <[email protected]> wrote:
> Document support for AD7606 Analog to Digital Converter.
>
> Signed-off-by: Stefan Popa <[email protected]>
Looks good to me, but as it's a non trivial binding in complexity I'd
definitely like a DT maintainers input before applying this.
Thanks,
Jonathan
> ---
> Changes in v2:
> - fixed indentation issues.
> - used gpios instead of gpio.
> - added vendor prefix for conversion-start-gpios, first-data-gpios,
> and range-gpios.
> Changes in v3:
> - Added adi,oversampling-ratio-gpios.
>
> .../devicetree/bindings/iio/adc/adi,ad7606.txt | 54 ++++++++++++++++++++++
> MAINTAINERS | 1 +
> 2 files changed, 55 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..02fae23
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt
> @@ -0,0 +1,54 @@
> +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.
> +
> +Optional properties:
> +
> +- reset-gpios: must be the device tree identifier of the RESET pin. If specified,
> + it will be asserted during driver probe.
> +- 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.
> +- 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.
> +- 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.
> +
> +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 0>;
> + reset-gpios = <&gpio 27 0>;
> + adi,first-data-gpios = <&gpio 22 0>;
> + standby-gpios = <&gpio 24 0>;
> + };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 843545d..6d63db4 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -845,6 +845,7 @@ L: [email protected]
> 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 <[email protected]>
On Thu, Nov 29, 2018 at 06:57:43PM +0200, Stefan Popa wrote:
> Document support for AD7606 Analog to Digital Converter.
>
> Signed-off-by: Stefan Popa <[email protected]>
> ---
> Changes in v2:
> - fixed indentation issues.
> - used gpios instead of gpio.
> - added vendor prefix for conversion-start-gpios, first-data-gpios,
> and range-gpios.
> Changes in v3:
> - Added adi,oversampling-ratio-gpios.
>
> .../devicetree/bindings/iio/adc/adi,ad7606.txt | 54 ++++++++++++++++++++++
> MAINTAINERS | 1 +
> 2 files changed, 55 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..02fae23
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt
> @@ -0,0 +1,54 @@
> +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.
Needs to say active high or low and set the flag appropriately.
> +
> +Optional properties:
> +
> +- reset-gpios: must be the device tree identifier of the RESET pin. If specified,
> + it will be asserted during driver probe.
active high or low?
> +- 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.
active high or 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.
active high or low?
> +- 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.
> +
> +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 0>;
> + reset-gpios = <&gpio 27 0>;
> + adi,first-data-gpios = <&gpio 22 0>;
> + standby-gpios = <&gpio 24 0>;
> + };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 843545d..6d63db4 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -845,6 +845,7 @@ L: [email protected]
> 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 <[email protected]>
> --
> 2.7.4
>