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Subject: Re: [PATCH v2 2/2] dt-bindings: serial: Add rx-tx-swap to stm32-usart
To:     Martin Devera <devik@eaxlabs.cz>, <linux-kernel@vger.kernel.org>
CC:     <devicetree@vger.kernel.org>,
        Alexandre Torgue <alexandre.torgue@st.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Rob Herring <robh+dt@kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        Maxime Coquelin <mcoquelin.stm32@gmail.com>,
        <linux-serial@vger.kernel.org>, Jiri Slaby <jirislaby@kernel.org>,
        <linux-stm32@st-md-mailman.stormreply.com>,
        Le Ray <erwan.leray@st.com>
References: <CAL_JsqK8+M=Vg0PiDXP2f1LrEp4hSVea6piAASMGu1H=pxme6Q@mail.gmail.com>
 <20210227164157.30971-1-devik@eaxlabs.cz>
 <20210227164157.30971-2-devik@eaxlabs.cz>
From:   Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Message-ID: <fecd3c15-7796-7c12-6aaa-d77c7407980d@foss.st.com>
Date:   Mon, 1 Mar 2021 11:36:14 +0100
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On 2/27/21 5:41 PM, Martin Devera wrote:
> Add new rx-tx-swap property to allow for RX & TX pin swapping.
> 
> Signed-off-by: Martin Devera <devik@eaxlabs.cz>
> ---
>  Documentation/devicetree/bindings/serial/st,stm32-uart.yaml | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml b/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
> index 8631678283f9..45f2a19997da 100644
> --- a/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
> +++ b/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml
> @@ -40,6 +40,10 @@ properties:
>  
>    uart-has-rtscts: true
>  
> +  rx-tx-swap:
> +    type: boolean
> +    maxItems: 1
> +

Hi Martin,

This could be restricted to st,stm32f7-uart and st,stm32h7-uart
compatibles. This option isn't available on stm32f4 (e.g. st,stm32-uart
compatible)

Thanks for your patch,
Best Regards,
Fabrice

>    dmas:
>      minItems: 1
>      maxItems: 2
>