linux-kernel - Re: [PATCH 2/3] dt-bindings: rtc: moxart: use proper names for gpio properties

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Date:   Wed, 1 Feb 2023 08:38:48 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     Arnd Bergmann <arnd@...db.de>, linux-rtc@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH 2/3] dt-bindings: rtc: moxart: use proper names for gpio
 properties

On 01/02/2023 06:48, Dmitry Torokhov wrote:
> MOXA ART RTC driver has been switched to gpiod API and is now using
> properly named properties for its gpios (with gpiolib implementing a
> quirk to recognize legacy names). Change binding document to use
> proper names as well.
> 
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
> ---
>  .../devicetree/bindings/rtc/moxa,moxart-rtc.txt      | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/rtc/moxa,moxart-rtc.txt b/Documentation/devicetree/bindings/rtc/moxa,moxart-rtc.txt
> index c9d3ac1477fe..1374df7bf9d6 100644
> --- a/Documentation/devicetree/bindings/rtc/moxa,moxart-rtc.txt
> +++ b/Documentation/devicetree/bindings/rtc/moxa,moxart-rtc.txt
> @@ -3,15 +3,15 @@ MOXA ART real-time clock
>  Required properties:
>  
>  - compatible : Should be "moxa,moxart-rtc"
> -- gpio-rtc-sclk : RTC sclk gpio, with zero flags
> -- gpio-rtc-data : RTC data gpio, with zero flags
> -- gpio-rtc-reset : RTC reset gpio, with zero flags
> +- rtc-sclk-gpios : RTC sclk gpio, with zero flags
> +- rtc-data-gpios : RTC data gpio, with zero flags
> +- rtc-reset-gpios : RTC reset gpio, with zero flags

Your driver breaks the ABI, doesn't it? If not, how are the old
properties parsed?

Best regards,
Krzysztof