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Date:   Sat, 2 May 2020 15:51:58 +0200
From:   Lukas Wunner <lukas@...ner.de>
To:     Heiko Stuebner <heiko@...ech.de>
Cc:     gregkh@...uxfoundation.org, jslaby@...e.com,
        andriy.shevchenko@...ux.intel.com, matwey.kornilov@...il.com,
        linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        christoph.muellner@...obroma-systems.com,
        giulio.benetti@...ronovasrl.com,
        Heiko Stuebner <heiko.stuebner@...obroma-systems.com>
Subject: Re: [PATCH v2 5/7] dt-bindings: serial: Add binding for rs485
 receiver enable GPIO

On Thu, Mar 26, 2020 at 12:14:20AM +0100, Heiko Stuebner wrote:
> --- a/Documentation/devicetree/bindings/serial/rs485.yaml
> +++ b/Documentation/devicetree/bindings/serial/rs485.yaml
> @@ -44,6 +44,10 @@ properties:
>     description: enables the receiving of data even while sending data.
>     $ref: /schemas/types.yaml#/definitions/flag
>  
> +  rs485-rx-enable-gpios:
> +   description: GPIO to handle a separate RS485 receive enable signal
> +   $ref: /schemas/types.yaml#/definitions/flag
> +

This isn't a flag, so you need the "maxItems: 1" line instead,
as you correctly did below:

>    rs485-term-gpios:
>      description: GPIO pin to enable RS485 bus termination.
>      maxItems: 1

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