linux-kernel - Re: [PATCH v8 05/10] dt-bindings: sc16is7xx: Add property to change GPIO function

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Message-ID: <f5cfc81d-d8ae-d270-f29a-c2b45b07a651@linaro.org>
Date:   Wed, 7 Jun 2023 16:30:26 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Hugo Villeneuve <hugo@...ovil.com>, gregkh@...uxfoundation.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, jirislaby@...nel.org, jringle@...dpoint.com,
        jesse.sung@...onical.com, isaac.true@...onical.com,
        l.perczak@...lintechnologies.com, tomasz.mon@...lingroup.com
Cc:     linux-serial@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
        Hugo Villeneuve <hvilleneuve@...onoff.com>,
        stable@...r.kernel.org, Conor Dooley <conor.dooley@...rochip.com>,
        Lech Perczak <lech.perczak@...lingroup.com>
Subject: Re: [PATCH v8 05/10] dt-bindings: sc16is7xx: Add property to change
 GPIO function

On 07/06/2023 16:05, Hugo Villeneuve wrote:
> From: Hugo Villeneuve <hvilleneuve@...onoff.com>
> 
> Some variants in this series of UART controllers have GPIO pins that
> are shared between GPIO and modem control lines.
> 
> The pin mux mode (GPIO or modem control lines) can be set for each
> ports (channels) supported by the variant.
> 
> This adds a property to the device tree to set the GPIO pin mux to
> modem control lines on selected ports if needed.
> 
> Cc: <stable@...r.kernel.org> # 6.1.x
> Signed-off-by: Hugo Villeneuve <hvilleneuve@...onoff.com>
> Acked-by: Conor Dooley <conor.dooley@...rochip.com>
> Reviewed-by: Lech Perczak <lech.perczak@...lingroup.com>
> ---
>  .../bindings/serial/nxp,sc16is7xx.txt         | 46 +++++++++++++++++++
>  1 file changed, 46 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt b/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt
> index 0fa8e3e43bf8..1a7e4bff0456 100644
> --- a/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt
> +++ b/Documentation/devicetree/bindings/serial/nxp,sc16is7xx.txt
> @@ -23,6 +23,9 @@ Optional properties:
>      1 = active low.
>  - irda-mode-ports: An array that lists the indices of the port that
>  		   should operate in IrDA mode.
> +- nxp,modem-control-line-ports: An array that lists the indices of the port that
> +				should have shared GPIO lines configured as
> +				modem control lines.
>  
>  Example:
>          sc16is750: sc16is750@51 {
> @@ -35,6 +38,26 @@ Example:
>                  #gpio-cells = <2>;
>          };
>  
> +	sc16is752: sc16is752@53 {

Since you keep sending new versions, fix the names. nNode names should
be generic. See also explanation and list of examples in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

Best regards,
Krzysztof