linux-kernel - Re: [PATCH v3 2/3] dt-bindings: iio: light: add veml6030 ALS bindings

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Date:   Mon, 21 Oct 2019 12:28:41 -0500
From:   Rob Herring <robh+dt@...nel.org>
To:     Rishi Gupta <gupt21@...il.com>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald <pmeerw@...erw.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Allison Randal <allison@...utok.net>, alexios.zavras@...el.com,
        "Angus Ainslie (Purism)" <angus@...ea.ca>,
        "open list:IIO SUBSYSTEM AND DRIVERS" <linux-iio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Mark Rutland <mark.rutland@....com>, devicetree@...r.kernel.org
Subject: Re: [PATCH v3 2/3] dt-bindings: iio: light: add veml6030 ALS bindings

On Mon, Oct 21, 2019 at 8:31 AM Rishi Gupta <gupt21@...il.com> wrote:
>
> This commit adds device tree bindings for veml6030 ambient
> light sensor.
>
> Signed-off-by: Rishi Gupta <gupt21@...il.com>
> ---
> Changes in v3:
> * None
>
> Changes in v2:
> * Corrected grammatical mistake from 'is' to 'are' in description of bindings
>
>  .../devicetree/bindings/iio/light/veml6030.yaml    | 62 ++++++++++++++++++++++
>  1 file changed, 62 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/light/veml6030.yaml
>
> diff --git a/Documentation/devicetree/bindings/iio/light/veml6030.yaml b/Documentation/devicetree/bindings/iio/light/veml6030.yaml
> new file mode 100644
> index 0000000..969b314
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/light/veml6030.yaml
> @@ -0,0 +1,62 @@
> +# SPDX-License-Identifier: GPL-2.0+

(GPL-2.0-only OR BSD-2-Clause) for new bindings please.

> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/light/veml6030.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: VEML6030 Ambient Light Sensor (ALS)
> +
> +maintainers:
> +  - Rishi Gupta <gupt21@...il.com>
> +
> +description: |
> +  Bindings for the ambient light sensor veml6030 from Vishay
> +  Semiconductors over an i2c interface.
> +
> +  Irrespective of whether interrupt is used or not, application
> +  can get the ALS and White channel reading from IIO raw interface.
> +
> +  If the interrupts are used, application will receive an IIO event
> +  whenever configured threshold is crossed.
> +
> +  Specifications about the sensor can be found at:
> +    https://www.vishay.com/docs/84366/veml6030.pdf
> +
> +properties:
> +  compatible:
> +    enum:
> +      - vishay,veml6030
> +
> +  reg:
> +    description:
> +      I2C address of the device. If the ADDR pin on veml6030
> +      is pulled up, this address is 0x48. If the ADDR pin is
> +      pulled down, this address is 0x10.

If you want to define the addresses, then you do:

enum:
  - 0x10 # ADDR pin pulled down
  - 0x48 # ADDR pin pulled up

> +    maxItems: 1

And drop this.

> +
> +  interrupts:
> +    description:
> +      interrupt mapping for IRQ. Configure with IRQ_TYPE_LEVEL_LOW.
> +      Refer to interrupt-controller/interrupts.txt for generic
> +      interrupt client node bindings.
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        light-sensor@10 {
> +                compatible = "vishay,veml6030";
> +                reg = <0x10>;
> +                interrupts = <12 IRQ_TYPE_LEVEL_LOW>;
> +        };
> +    };
> +...
> --
> 2.7.4
>