linux-kernel - Re: [PATCH 1/2] dt-bindings: iio: adc: ti,ads7038: Add description for ADS7038

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Message-ID: <20231004151150.GA3140591-robh@kernel.org>
Date:   Wed, 4 Oct 2023 10:11:50 -0500
From:   Rob Herring <robh@...nel.org>
To:     werneazc@...il.com
Cc:     jic23@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, lars@...afoo.de, devicetree@...r.kernel.org,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Andre Werner <andre.werner@...tec-electronic.com>
Subject: Re: [PATCH 1/2] dt-bindings: iio: adc: ti,ads7038: Add description
 for ADS7038

On Wed, Oct 04, 2023 at 12:23:29PM +0200, werneazc@...il.com wrote:
> From: Andre Werner <andre.werner@...tec-electronic.com>
> 

Needs a commit message.

> Signed-off-by: Andre Werner <andre.werner@...tec-electronic.com>
> ---
>  .../bindings/iio/adc/ti,ads7038.yaml          | 51 +++++++++++++++++++
>  1 file changed, 51 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/adc/ti,ads7038.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/ti,ads7038.yaml b/Documentation/devicetree/bindings/iio/adc/ti,ads7038.yaml
> new file mode 100644
> index 000000000000..37fbae95c8e6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/adc/ti,ads7038.yaml
> @@ -0,0 +1,51 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/adc/ti,ads7038.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Texas Instruments ADS7038 and similar ADCs
> +
> +maintainers:
> +  - Andre Werner <andre.werner@...tec-electronic.com>
> +
> +description: |
> +  Family of 7 channel, 12 bit ADCs with SPI/I2C interface.
> +  
> +  Datasheet: https://www.ti.com/lit/gpn/ads7038
> +
> +properties:
> +  compatible:
> +    enum:
> +      - ti,ads7038
> +      - ti,ads7138
> +
> +  reg:
> +    maxItems: 1
> +
> +  spi-max-frequency:
> +    maximum: 60000000
> +
> +  vref-supply:
> +    description: Supplies the 2.5V or 5V reference voltage

I don't see that in the datasheet. It has AVDD and DVDD.

Also, looks like there are GPIOs. Those aren't ever exposed to the OS?

> +
> +required:
> +  - compatible
> +  - reg
> +  - vref-supply
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    spi {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        adc@0 {
> +            compatible = "ti,ads7038";
> +            reg = <0>;
> +            vref-supply = <&refin_supply>;
> +            spi-max-frequency = <10000000>;
> +        };
> +    };
> -- 
> 2.42.0
>