netdev - Re: [PATCH v3 lora-next 1/4] dt-bindings: lora: sx130x: add basic documentation

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Message-ID: <CAF3==itV0RbEcUGM4b1hQYOOg5hddh9x+=SUiWaPuxYQPsgtQw@mail.gmail.com>
Date:   Thu, 24 Jan 2019 15:03:24 +0000
From:   Ben Whitten <benwhitten@...il.com>
To:     Andreas Färber <afaerber@...e.de>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        netdev <netdev@...r.kernel.org>, devicetree@...r.kernel.org,
        linux-lpwan@...ts.infradead.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 lora-next 1/4] dt-bindings: lora: sx130x: add basic documentation

Missed linux-lpwan
On Thu, 24 Jan 2019 at 14:53, Ben Whitten <ben.whitten@...il.com> wrote:
>
> From: Ben Whitten <ben.whitten@...il.com>
>
> Add basic documentation in YAML format for the SX130x series concentrators
> from Semtech.
> Required is; the location on the SPI bus and the compatible string.
>
> Signed-off-by: Ben Whitten <ben.whitten@...il.com>
> ---
> v2 -> v3:
> * Corrected fallback notation
> * Limited radio node names from anything to 'radio@'
> v1 -> v2:
> * Dropped reset-gpios, radio-spi from required.
> * Dropped spi-max-frequency from binding.
> * Changed compatible to allow fallback from SX1308 to SX1301.
> * Wording changes in commit and descriptions.
> * Dual licence
> * Incorperate Robs comments on child node and spi wrapper
> ---
>  .../bindings/net/lora/semtech,sx130x.yaml     | 101 ++++++++++++++++++
>  1 file changed, 101 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/net/lora/semtech,sx130x.yaml
>
> diff --git a/Documentation/devicetree/bindings/net/lora/semtech,sx130x.yaml b/Documentation/devicetree/bindings/net/lora/semtech,sx130x.yaml
> new file mode 100644
> index 000000000000..24fad1218735
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/lora/semtech,sx130x.yaml
> @@ -0,0 +1,101 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/lora/semtech,sx130x.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Semtech LoRa concentrator
> +
> +maintainers:
> +  - Andreas Färber <afaerber@...e.de>
> +  - Ben Whitten <ben.whitten@...il.com>
> +
> +description: |
> +  Semtech LoRa concentrator SX130x digital baseband chip is capable of
> +  demodulating LoRa signals on 8 channels simultaneously.
> +
> +  It is typically paired with two SX125x IQ radios controlled over an
> +  SPI directly from the concentrator.
> +
> +  The concentrator itself is controlled over SPI.
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - items:
> +        - enum:
> +          - semtech,sx1308
> +        - const: semtech,sx1301
> +      - items:
> +        - const: semtech,sx1301
> +
> +  reg:
> +    maxItems: 1
> +    description: The chip select on the SPI bus.
> +
> +  reset-gpios:
> +    maxItems: 1
> +    description: A connection of the reset gpio line.
> +
> +  radio-spi:
> +    type: object
> +    description: The concentrator can have two radios connected which are
> +      contained within the following node.
> +
> +    properties:
> +      '#address-cells':
> +        const: 1
> +
> +      '#size-cells':
> +        const: 0
> +
> +    patternProperties:
> +      "^radio@[0-1]$":
> +        type: object
> +        properties:
> +          reg:
> +            maxItems: 1
> +            minimum: 0
> +            maximum: 1
> +        required:
> +          - reg
> +
> +    required:
> +      - '#address-cells'
> +      - '#size-cells'
> +
> +required:
> +  - compatible
> +  - reg
> +
> +examples:
> +  - |
> +
> +    #include <dt-bindings/gpio/gpio.h>
> +
> +    spi {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      concentrator0: lora@0 {
> +        compatible = "semtech,sx1301";
> +        reg = <0>;
> +        reset-gpios = <&pioB 27 GPIO_ACTIVE_HIGH>;
> +        spi-max-frequency = <8000000>;
> +
> +        radio-spi {
> +          #address-cells = <1>;
> +          #size-cells = <0>;
> +
> +          radio0: radio@0 {
> +            compatible = "semtech,sx1257";
> +            reg = <0>;
> +          };
> +
> +          radio1: radio@1 {
> +            compatible = "semtech,sx1257";
> +            reg = <1>;
> +          };
> +        };
> +      };
> +    };
> --
> 2.17.1
>