linux-kernel - Re: [PATCH 1/2] dt-bindings: power: supply: gpio-charger: Add status-gpios property

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Date:   Tue, 26 Feb 2019 15:40:38 +0100
From:   Artur Rojek <contact@...ur-rojek.eu>
To:     Rob Herring <robh@...nel.org>
Cc:     Sebastian Reichel <sre@...nel.org>,
        Mark Rutland <mark.rutland@....com>, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Paul Cercueil <paul@...pouillou.net>
Subject: Re: [PATCH 1/2] dt-bindings: power: supply: gpio-charger: Add
 status-gpios property

Hi Rob.

Thanks for the review.

On 2019-02-25 22:53, Rob Herring wrote:
> On Tue, Feb 05, 2019 at 08:03:15PM +0100, Artur Rojek wrote:
>> Add documentation for the "status-gpios" property.
>> 
>> Signed-off-by: Artur Rojek <contact@...ur-rojek.eu>
>> ---
>>  .../devicetree/bindings/power/supply/gpio-charger.txt         | 4 
>> ++++
>>  1 file changed, 4 insertions(+)
>> 
>> diff --git 
>> a/Documentation/devicetree/bindings/power/supply/gpio-charger.txt 
>> b/Documentation/devicetree/bindings/power/supply/gpio-charger.txt
>> index adbb5dc5b6e9..b98a05a4973c 100644
>> --- a/Documentation/devicetree/bindings/power/supply/gpio-charger.txt
>> +++ b/Documentation/devicetree/bindings/power/supply/gpio-charger.txt
>> @@ -14,12 +14,16 @@ Required properties :
>>       usb-cdp (USB charging downstream port)
>>       usb-aca (USB accessory charger adapter)
>> 
>> +Optional properties:
>> + - status-gpios: GPIO indicating the charger status
> 
> So when it is asserted it has 'status'? What does status mean?
It is a GPIO indicating whether a battery is charging.
I shall make the description more clear.
> 
>> +
>>  Example:
>> 
>>  	usb_charger: charger {
>>  		compatible = "gpio-charger";
>>  		charger-type = "usb-sdp";
>>  		gpios = <&gpf0 2 0 0 0>;
>> +		status-gpios = <&gpf0 3 0 0 0>;
> 
> Humm, not sure what the thinking for 'gpios' was, but it's wrong and 
> you
> just copied it. If we follow the normal cell encoding with 2 cells, 
> this
> means the property takes 3 gpios (though the last 2 are marked not
> present with 0).
I will replace both of those properties with a valid example.

Artur
> 
> Rob