Re: [PATCH v3 1/3] dt-bindings: adc-joystick: add adc-joystick,no-hardware-trigger

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On 14/06/2022 18:50, Artur Rojek wrote:
> On 2022-06-13 21:23, Chris Morgan wrote:
>> From: Chris Morgan <macromorgan@xxxxxxxxxxx>
>>
>> Add documentation for adc-joystick,no-hardware-trigger. New device-tree
>> properties have been added.
>>
>> - adc-joystick,no-hardware-trigger: A boolean value noting the joystick
>> 				    device should be polled rather than
>> 				    use a triggered buffer.
>>
>> Signed-off-by: Maya Matuszczyk <maccraft123mc@xxxxxxxxx>
>> Signed-off-by: Chris Morgan <macromorgan@xxxxxxxxxxx>
>> ---
>>  .../devicetree/bindings/input/adc-joystick.yaml          | 9 ++++++++-
>>  1 file changed, 8 insertions(+), 1 deletion(-)
>>
>> diff --git a/Documentation/devicetree/bindings/input/adc-joystick.yaml
>> b/Documentation/devicetree/bindings/input/adc-joystick.yaml
>> index 2ee04e03bc22..627cc6c40191 100644
>> --- a/Documentation/devicetree/bindings/input/adc-joystick.yaml
>> +++ b/Documentation/devicetree/bindings/input/adc-joystick.yaml
>> @@ -12,12 +12,19 @@ maintainers:
>>
>>  description: >
>>    Bindings for joystick devices connected to ADC controllers 
>> supporting
>> -  the Industrial I/O subsystem.
>> +  the Industrial I/O subsystem. Supports both polled devices where no
>> +  iio trigger is available and non-polled devices which are triggered
>> +  by iio.
>>
>>  properties:
>>    compatible:
>>      const: adc-joystick
>>
>> +  adc-joystick,no-hardware-trigger:
> I'm against using Device Tree for this functionality. See my reply to 
> patch 2/3 for details.

I am surprised to see v3 after that comment...

> But in case we do end up going DT way, I would much prefer going with 
> Rob's suggestion of using the existing `poll-interval` input property.

+1 here as well, if above does not work.


Best regards,
Krzysztof



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