linux-kernel - Re: [PATCH 2/2] extcon: arizona: Update device tree binding for mic detect configurations

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Message-id: <566E238E.4050007@samsung.com>
Date:	Mon, 14 Dec 2015 11:03:58 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
Cc:	myungjoo.ham@...sung.com, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, patches@...nsource.wolfsonmicro.com
Subject: Re: [PATCH 2/2] extcon: arizona: Update device tree binding for mic
 detect configurations

Hi Charles,

On 2015년 12월 11일 02:08, Charles Keepax wrote:
> Update the device tree binding documentation to include documentation for
> the wlf,micd-configs property that is used to specify the configurations
> for headset polarity detection (CTIA / OTMP).
> 
> Signed-off-by: Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
> ---
>  Documentation/devicetree/bindings/extcon/extcon-arizona.txt | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/extcon/extcon-arizona.txt b/Documentation/devicetree/bindings/extcon/extcon-arizona.txt
> index 238e10e..fd9b898 100644
> --- a/Documentation/devicetree/bindings/extcon/extcon-arizona.txt
> +++ b/Documentation/devicetree/bindings/extcon/extcon-arizona.txt
> @@ -37,5 +37,13 @@ Optional properties:
>      milliseconds.
>    - wlf,micd-force-micbias : Force MICBIAS continuously on during microphone
>      detection.
> +  - wlf,micd-configs : Headset polarity configurations (generally used for
> +    detection of CTIA / OMTP headsets), the field can be of variable length
> +    but should always be a multiple of 3 cells long, each three cell group
> +    represents one polarity configuration.
> +    The first cell defines the accessory detection pin, zero will use MICDET1
> +    and all other values will use MICDET2.
> +    The second cell represents the MICBIAS to be used.
> +    The third cell represents the value of the micd-pol-gpio pin.

I think that you better to add the example using the 'wlf,micd-configs'
to improve the understanding of using this property.
because the number of 'wlf,micd-configs' value is not fixed.

Also,
How about do you add the real example for all arizona properties on separate patch?

Thanks,
Chanwoo Choi

>  
>    - wlf,gpsw : Settings for the general purpose switch
> 

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