linux-kernel - Re: [PATCH v2] dt-bindings: serial: rs485: Fix rs485-rts-delay property

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Message-ID: <20240913-sulk-threaten-79448edf988a@spud>
Date: Fri, 13 Sep 2024 18:24:47 +0100
From: Conor Dooley <conor@...nel.org>
To: Michal Simek <michal.simek@....com>
Cc: linux-kernel@...r.kernel.org, monstr@...str.eu, michal.simek@...inx.com,
	git@...inx.com, stable@...r.kernel.org,
	Benjamin Gaignard <benjamin.gaignard@...com>,
	Conor Dooley <conor+dt@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Rob Herring <robh@...nel.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" <devicetree@...r.kernel.org>,
	"open list:TTY LAYER AND SERIAL DRIVERS" <linux-serial@...r.kernel.org>
Subject: Re: [PATCH v2] dt-bindings: serial: rs485: Fix rs485-rts-delay
 property

On Fri, Sep 13, 2024 at 12:55:23PM +0200, Michal Simek wrote:
> Code expects array only with 2 items which should be checked.
> But also item checking is not working as it should likely because of
> incorrect items description.
> 
> Fixes: d50f974c4f7f ("dt-bindings: serial: Convert rs485 bindings to json-schema")
> Signed-off-by: Michal Simek <michal.simek@....com>
> Cc: <stable@...r.kernel.org>
> ---
> 
> Changes in v2:
> - Remove maxItems properties which are not needed
> - Add stable ML to CC
> 
>  .../devicetree/bindings/serial/rs485.yaml     | 19 +++++++++----------
>  1 file changed, 9 insertions(+), 10 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/serial/rs485.yaml b/Documentation/devicetree/bindings/serial/rs485.yaml
> index 9418fd66a8e9..9665de41762e 100644
> --- a/Documentation/devicetree/bindings/serial/rs485.yaml
> +++ b/Documentation/devicetree/bindings/serial/rs485.yaml
> @@ -18,16 +18,15 @@ properties:
>      description: prop-encoded-array <a b>
>      $ref: /schemas/types.yaml#/definitions/uint32-array
>      items:
> -      items:
> -        - description: Delay between rts signal and beginning of data sent in
> -            milliseconds. It corresponds to the delay before sending data.
> -          default: 0
> -          maximum: 100
> -        - description: Delay between end of data sent and rts signal in milliseconds.
> -            It corresponds to the delay after sending data and actual release
> -            of the line.
> -          default: 0
> -          maximum: 100
> +      - description: Delay between rts signal and beginning of data sent in
> +          milliseconds. It corresponds to the delay before sending data.
> +        default: 0
> +        maximum: 50

I would expect to see some mention in the commit message as to why the
maximum has changed from 100 to 50 milliseconds.

> +      - description: Delay between end of data sent and rts signal in milliseconds.
> +          It corresponds to the delay after sending data and actual release
> +          of the line.
> +        default: 0
> +        maximum: 100
>  
>    rs485-rts-active-high:
>      description: drive RTS high when sending (this is the default).
> -- 
> 2.43.0
> 

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