linux-kernel - Re: [PATCH 4/4] dt-bindings: iio: adc: ad7192: Add binding documentation for AD7192

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Date:   Mon, 12 Aug 2019 13:07:22 -0600
From:   Rob Herring <robh+dt@...nel.org>
To:     Mircea Caprioru <mircea.caprioru@...log.com>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Stefan Popa <stefan.popa@...log.com>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "open list:IIO SUBSYSTEM AND DRIVERS" <linux-iio@...r.kernel.org>,
        devicetree@...r.kernel.org
Subject: Re: [PATCH 4/4] dt-bindings: iio: adc: ad7192: Add binding
 documentation for AD7192

On Mon, Aug 12, 2019 at 3:03 AM Mircea Caprioru
<mircea.caprioru@...log.com> wrote:
>
> This patch add device tree binding documentation for AD7192 adc in YAML
> format.
>
> Signed-off-by: Mircea Caprioru <mircea.caprioru@...log.com>
> ---
>  .../bindings/iio/adc/adi,ad7192.yaml          | 123 ++++++++++++++++++
>  1 file changed, 123 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
>
> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
> new file mode 100644
> index 000000000000..a56ee391f6a8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
> @@ -0,0 +1,123 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +# Copyright 2019 Analog Devices Inc.
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/bindings/iio/adc/adi,ad7192.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Analog Devices AD7192 ADC device driver
> +
> +maintainers:
> +  - Michael Hennerich <michael.hennerich@...log.com>
> +
> +description: |
> +  Bindings for the Analog Devices AD7192 ADC device. Datasheet can be
> +  found here:
> +  https://www.analog.com/media/en/technical-documentation/data-sheets/AD7192.pdf
> +
> +properties:
> +  compatible:
> +    enum:
> +      - adi,ad7190
> +      - adi,ad7192
> +      - adi,ad7193
> +      - adi,ad7195
> +
> +  reg:
> +    description: SPI chip select number for the device

Don't need a description as this is a standard property and there's
only 1 entry.

> +    maxItems: 1
> +
> +  spi-cpol: true
> +
> +  spi-cpha: true
> +
> +  clocks:
> +    maxItems: 1
> +    description: phandle to the master clock (mclk)
> +
> +  clock-names:
> +    items:
> +      - const: mclk
> +
> +  interrupts:
> +    description: IRQ line for the ADC

Same here.

> +    maxItems: 1
> +
> +  dvdd-supply:
> +    description: DVdd voltage supply
> +    items:
> +      - const: dvdd
> +
> +  avdd-supply:
> +    description: AVdd voltage supply
> +    items:
> +      - const: avdd
> +
> +  adi,rejection-60-Hz-enable:
> +    description: |
> +      This bit enables a notch at 60 Hz when the first notch of the sinc
> +      filter is at 50 Hz. When REJ60 is set, a filter notch is placed at
> +      60 Hz when the sinc filter first notch is at 50 Hz. This allows
> +      simultaneous 50 Hz/ 60 Hz rejection.
> +    type: boolean
> +
> +  adi,refin2-pins-enable:
> +    description: |
> +      External reference applied between the P1/REFIN2(+) and P0/REFIN2(−) pins.
> +    type: boolean
> +
> +  adi,buffer-enable:
> +    description: |
> +      Enables the buffer on the analog inputs. If cleared, the analog inputs
> +      are unbuffered, lowering the power consumption of the device. If this
> +      bit is set, the analog inputs are buffered, allowing the user to place
> +      source impedances on the front end without contributing gain errors to
> +      the system.
> +    type: boolean
> +
> +  adi,burnout-currents-enable:
> +    description: |
> +      When this bit is set to 1, the 500 nA current sources in the signal
> +      path are enabled. When BURN = 0, the burnout currents are disabled.
> +      The burnout currents can be enabled only when the buffer is active
> +      and when chop is disabled.
> +    type: boolean
> +
> +  bipolar:
> +    description: see Documentation/devicetree/bindings/iio/adc/adc.txt
> +    type: boolean
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +  - interrupts
> +  - dvdd-supply
> +  - avdd-supply
> +  - spi-cpol
> +  - spi-cpha
> +
> +examples:
> +  - |
> +    spi0 {
> +      ad7192@0 {

adc@0

With those fixes,

Reviewed-by: Rob Herring <robh@...nel.org>