diff mbox series

[v4,9/9] staging: iio: ad7780: add device tree binding

Message ID ac8955ea9d903c106535d76549ff9802f527f4f6.1551358569.git.renatogeh@gmail.com (mailing list archive)
State New, archived
Headers show
Series staging: iio: ad7780: move out of staging | expand

Commit Message

Renato Lui Geh Feb. 28, 2019, 2:26 p.m. UTC
Adds a device tree binding for the ad7780 driver.

Signed-off-by: Renato Lui Geh <renatogeh@gmail.com>
---
 .../bindings/iio/adc/adi,ad7780.txt           | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7780.txt

Comments

Jonathan Cameron March 2, 2019, 7:13 p.m. UTC | #1
On Thu, 28 Feb 2019 11:26:28 -0300
Renato Lui Geh <renatogeh@gmail.com> wrote:

> Adds a device tree binding for the ad7780 driver.
> 
> Signed-off-by: Renato Lui Geh <renatogeh@gmail.com>
Looks good to me, but we'll see if Rob picks up on things
I've missed.

Jonathan

> ---
>  .../bindings/iio/adc/adi,ad7780.txt           | 48 +++++++++++++++++++
>  1 file changed, 48 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7780.txt
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7780.txt b/Documentation/devicetree/bindings/iio/adc/adi,ad7780.txt
> new file mode 100644
> index 000000000000..440e52555349
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7780.txt
> @@ -0,0 +1,48 @@
> +* 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>;
> +};
Rob Herring (Arm) March 11, 2019, 10:47 p.m. UTC | #2
On Thu, 28 Feb 2019 11:26:28 -0300, Renato Lui Geh wrote:
> Adds a device tree binding for the ad7780 driver.
> 
> Signed-off-by: Renato Lui Geh <renatogeh@gmail.com>
> ---
>  .../bindings/iio/adc/adi,ad7780.txt           | 48 +++++++++++++++++++
>  1 file changed, 48 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7780.txt
> 

Reviewed-by: Rob Herring <robh@kernel.org>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7780.txt b/Documentation/devicetree/bindings/iio/adc/adi,ad7780.txt
new file mode 100644
index 000000000000..440e52555349
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7780.txt
@@ -0,0 +1,48 @@ 
+* 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>;
+};