linux-kernel - Re: [PATCH 2/4] dt-bindings: gnss: add gtop binding

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Message-ID: <20190111144330.GA30111@bogus>
Date:   Fri, 11 Jan 2019 08:43:30 -0600
From:   Rob Herring <robh@...nel.org>
To:     Loys Ollivier <lollivier@...libre.com>
Cc:     devicetree@...r.kernel.org, Johan Hovold <johan@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-kernel@...r.kernel.org, Kevin Hilman <khilman@...libre.com>,
        linux-amlogic@...ts.infradead.org
Subject: Re: [PATCH 2/4] dt-bindings: gnss: add gtop binding

On Fri, Dec 28, 2018 at 11:50:33AM +0100, Loys Ollivier wrote:
> Add binding for GlobalTop GNSS receivers.
> 
> Signed-off-by: Loys Ollivier <lollivier@...libre.com>
> ---
>  Documentation/devicetree/bindings/gnss/gtop.txt | 33 +++++++++++++++++++++++++
>  1 file changed, 33 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/gnss/gtop.txt
> 
> diff --git a/Documentation/devicetree/bindings/gnss/gtop.txt b/Documentation/devicetree/bindings/gnss/gtop.txt
> new file mode 100644
> index 000000000000..24c86703aa46
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gnss/gtop.txt
> @@ -0,0 +1,33 @@
> +GlobalTop GNSS Receiver DT binding
> +
> +The GlobalTop GNSS receivers uses UART interfaces.
> +
> +Please see Documentation/devicetree/bindings/gnss/gnss.txt for generic
> +properties.
> +
> +Required properties:
> +
> +- compatible	: Must be
> +
> +			"globaltop,pa6h"
> +
> +- vcc-supply	: Main voltage regulator
> +
> +Optional properties:
> +
> +- timepulse-gpios	: Time pulse GPIO
> +- v-bckp-supply	: Backup voltage regulator
> +
> +Example:
> +
> +&uart_A {
> +	status = "okay";

Don't show status in examples.

> +	pinctrl-0 = <&uart_a_pins>;
> +	pinctrl-names = "default";
> +
> +	gnss {
> +		compatible = "globaltop,pa6h";
> +		vcc-supply = <&vcc_3v3>;
> +		current-speed = <9600>;

Shouldn't the driver know what speed the device operates at?

If you do use this, then it needs to be documented as to when it is 
needed.

> +	};
> +};
> -- 
> 2.7.4
>