linux-kernel - Re: [PATCH 3/5 v2] dt-bindings: gnss: Rewrite sirfstar binding in YAML

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Message-ID: <67600921-a4ea-367e-6b45-c4a1a12ae88b@kernel.org>
Date:   Fri, 18 Mar 2022 10:29:03 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Johan Hovold <johan@...nel.org>
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH 3/5 v2] dt-bindings: gnss: Rewrite sirfstar binding in
 YAML

On 17/03/2022 23:58, Linus Walleij wrote:
> This rewrites the SiRFstar DT bindings in YAML.
> 
> Cc: devicetree@...r.kernel.org
> Cc: Krzysztof Kozlowski <krzk@...nel.org>
> Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
> ---
> ChangeLog v1->v2:
> - Change additionalProperties: false to uneavaluatedProperties: false
>   so new common properties get available immediately
> - This should also make the checker robot happy about
>   lna-supply
> ---
>  .../devicetree/bindings/gnss/sirfstar.txt     | 46 ------------
>  .../devicetree/bindings/gnss/sirfstar.yaml    | 71 +++++++++++++++++++
>  2 files changed, 71 insertions(+), 46 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/gnss/sirfstar.txt
>  create mode 100644 Documentation/devicetree/bindings/gnss/sirfstar.yaml
> 
> diff --git a/Documentation/devicetree/bindings/gnss/sirfstar.txt b/Documentation/devicetree/bindings/gnss/sirfstar.txt
> deleted file mode 100644
> index f4252b6b660b..000000000000
> --- a/Documentation/devicetree/bindings/gnss/sirfstar.txt
> +++ /dev/null
> @@ -1,46 +0,0 @@
> -SiRFstar-based GNSS Receiver DT binding
> -
> -SiRFstar chipsets are used in GNSS-receiver modules produced by several
> -vendors and can use UART, SPI or I2C interfaces.
> -
> -Please see Documentation/devicetree/bindings/gnss/gnss.txt for generic
> -properties.
> -
> -Required properties:
> -
> -- compatible	: Must be one of
> -
> -			"fastrax,uc430"
> -			"linx,r4"
> -			"wi2wi,w2sg0004"
> -			"wi2wi,w2sg0008i"
> -			"wi2wi,w2sg0084i"
> -
> -- vcc-supply	: Main voltage regulator (pin name: 3V3_IN, VCC, VDD)
> -
> -Required properties (I2C):
> -- reg		: I2C slave address
> -
> -Required properties (SPI):
> -- reg		: SPI chip select address
> -
> -Optional properties:
> -
> -- sirf,onoff-gpios	: GPIO used to power on and off device (pin name: ON_OFF)
> -- sirf,wakeup-gpios	: GPIO used to determine device power state
> -			  (pin name: RFPWRUP, WAKEUP)
> -- timepulse-gpios	: Time pulse GPIO (pin name: 1PPS, TM)
> -
> -Example:
> -
> -serial@...4 {
> -	compatible = "ns16550a";
> -
> -	gnss {
> -		compatible = "wi2wi,w2sg0084i";
> -
> -		vcc-supply = <&gnss_reg>;
> -		sirf,onoff-gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>;
> -		sirf,wakeup-gpios = <&gpio0 17 GPIO_ACTIVE_HIGH>;
> -	};
> -};
> diff --git a/Documentation/devicetree/bindings/gnss/sirfstar.yaml b/Documentation/devicetree/bindings/gnss/sirfstar.yaml
> new file mode 100644
> index 000000000000..9f80add3e61b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gnss/sirfstar.yaml
> @@ -0,0 +1,71 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/gnss/sirfstar.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: SiRFstar GNSS Receiver Device Tree Bindings
> +
> +allOf:
> +  - $ref: gnss-common.yaml#

The allOf should be just before "properties:" (also in patch #2).

> +
> +maintainers:
> +  - Johan Hovold <johan@...nel.org>
> +
> +description:
> +  The SiRFstar GNSS receivers have incarnated over the years in different
> +  chips, starting from the SiRFstarIII which was a chip that was introduced in
> +  2004 and used in a lot of dedicated GPS devices. In 2009 SiRF was acquired
> +  by CSR (Cambridge Silicon Radio) and in 2012 the CSR GPS business was
> +  acquired by Samsung, while some products remained with CSR. In 2014 CSR
> +  was acquired by Qualcomm who still sell some of the SiRF products.
> +
> +  SiRF chips can be used over UART, I2C or SPI buses.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - fastrax,uc430
> +      - linx,r4
> +      - wi2wi,w2sg0004
> +      - wi2wi,w2sg0008i
> +      - wi2wi,w2sg0084i
> +
> +  reg:
> +    description:
> +      The I2C Address, SPI chip select address. Not required on UART buses.
> +
> +  vcc-supply:
> +    description:
> +      Main voltage regulator, pin names such as 3V3_IN, VCC, VDD.
> +
> +  timepulse-gpios:
> +    description: Comes with pin names such as 1PPS or TM

You don't need this, I think. It's coming from gnss-common.yaml.



Best regards,
Krzysztof