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SubjectRe: [PATCH v4 4/4] mfd: max77693: Update DT binding to support haptic
Dear Lee Jones,


2014년 09월 16일 08:00에 Lee Jones 이(가) 쓴 글:
> On Thu, 11 Sep 2014, Jaewon Kim wrote:
>
>> This patch add haptic DT binding documentation and example
>> to support haptic driver in max77693 Multifunction device.
>>
>> Signed-off-by: Jaewon Kim <jaewon02.kim@samsung.com>
>> Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
>> ---
>> Documentation/devicetree/bindings/mfd/max77693.txt | 18 ++++++++++++++++++
>> 1 file changed, 18 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/mfd/max77693.txt b/Documentation/devicetree/bindings/mfd/max77693.txt
>> index 11921cc..d178b9e 100644
>> --- a/Documentation/devicetree/bindings/mfd/max77693.txt
>> +++ b/Documentation/devicetree/bindings/mfd/max77693.txt
>> @@ -27,6 +27,17 @@ Optional properties:
>>
>> [*] refer Documentation/devicetree/bindings/regulator/regulator.txt
>>
>> +- haptic : The haptic of max77693 have to be instantiated under subnod
> Perhaps a description as to what "The haptic" is might be handy?
Ok, I will add description about haptic.

>
> s/have/has
>
> s/subnod/subnode
>
> What do you mean by "under" a subnode? Do you mean "as a" subnode?
>
>> + named "haptic" using the following haptic format in example.
> What is the "haptic format"? It just looks like a normal node to me.
>
>> + Haptic sensation from motor can be changed by changing a period cycle in pwms.
> Is "Haptic sensation" a technical term?
>
> s/from motor/from a motor/
>
> s/changed by changing/changed by varying/
>
> s/period cycle/duty cycle/
>
> s/in pwms/in the pwms property/
How is it if I change in this way?

haptic : Referring to the term Haptic, It is the use of advanced
vibration patterns
and waveforms to convey information to a user or operator.

MAX77693 uses PWM and MOTOR in order to give Haptic.
The Haptic from a motor can be changed by varying a period/duty
cycle in pwms.

>
>> +
>> + Required properties:
>> + - compatible : Must be "maxim,max77693-hpatic"
>> + - haptic-supply : power supply for haptic motor
> s/for haptic/for the haptic/
>
>> + [*] refer Documentation/devicetree/bindings/regulator/regulator.txt
>> + - pwms : phandle to the physical PWM device,
> It's not just the phandle though is it?
Do you want more description?
Or it mean the wrong?

>
>> + [*] refer Documentation/devicetree/bindings/pwm/pwm.txt
>> +
>> Example:
>> max77693@66 {
>> compatible = "maxim,max77693";
>> @@ -52,4 +63,11 @@ Example:
>> regulator-boot-on;
>> };
>> };
>> +
>> + haptic {
>> + compatible = "maxim,max77693-haptic";
>> + haptic-supply = <&haptic_supply>;
>> + pwms = <&pwm 0 40000 0>;
>> + pwm-names = "haptic";
>> + };
>> };

Thank you for feedback.
And plz review "[PATCH v4 3/4] mfd: max77693: add haptic of_compatible
in mfd_cell".

thanks.
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