linux-kernel - Re: [PATCH v2 2/5] dt-binding: pcf8523: add xtal load capacitance

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Message-ID: <20190115210657.GA24662@bogus>
Date:   Tue, 15 Jan 2019 15:06:57 -0600
From:   Rob Herring <robh@...nel.org>
To:     Sam Ravnborg <sam@...nborg.org>
Cc:     Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Andrew Jeffery <andrew@...id.au>,
        Fabio Estevam <fabio.estevam@....com>,
        Joel Stanley <joel@....id.au>,
        Mark Rutland <mark.rutland@....com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-rtc@...r.kernel.org, Sam Ravnborg <sam@...nborg.org>,
        Søren Andersen <san@...v.dk>
Subject: Re: [PATCH v2 2/5] dt-binding: pcf8523: add xtal load capacitance

On Tue,  8 Jan 2019 19:54:11 +0100, Sam Ravnborg wrote:
> The NXP pcf8523 supports two different xtal load capacitance
> - 7000fF  (7pF)    HW default
> - 12500fF (12.5pF) Minimum power consumption, driver default
> 
> To obtain a precise RTC the pcf8523 must be configured
> with the correct capacitance load of the xtal.
> 
> Add a property to specify the xtal capacitance load.
> The default value matches that of the current Linux driver.
> 
> With a dedicated binding remove the entry in rtc.txt
> 
> Signed-off-by: Søren Andersen <san@...v.dk>
> Signed-off-by: Sam Ravnborg <sam@...nborg.org>
> Cc: Alessandro Zummo <a.zummo@...ertech.it>
> Cc: Alexandre Belloni <alexandre.belloni@...tlin.com>
> Cc: Rob Herring <robh+dt@...nel.org>
> Cc: Mark Rutland <mark.rutland@....com>
> ---
>  Documentation/devicetree/bindings/rtc/nxp,pcf8523.txt | 18 ++++++++++++++++++
>  Documentation/devicetree/bindings/rtc/rtc.txt         |  1 -
>  2 files changed, 18 insertions(+), 1 deletion(-)
>  create mode 100644 Documentation/devicetree/bindings/rtc/nxp,pcf8523.txt
> 

Reviewed-by: Rob Herring <robh@...nel.org>