Re: [PATCH v3 4/4] iio: ad5755: Add full DT binding documentation

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On Tue, Feb 16, 2016 at 03:25:57PM +0100, Sean Nyekjaer wrote:
> Signed-off-by: Sean Nyekjaer <sean.nyekjaer@xxxxxxxxx>
> ---
> Changes since v2:
>  - Removed defines, alot easier to read :-)
> 
>  .../devicetree/bindings/iio/dac/ad5755.txt         | 94 ++++++++++++++++++++++
>  1 file changed, 94 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/iio/dac/ad5755.txt b/Documentation/devicetree/bindings/iio/dac/ad5755.txt
> index 4c91583..751204b 100644
> --- a/Documentation/devicetree/bindings/iio/dac/ad5755.txt
> +++ b/Documentation/devicetree/bindings/iio/dac/ad5755.txt
> @@ -15,10 +15,104 @@ Recommended properties:
>   - spi-max-frequency: Definition as per
>  		Documentation/devicetree/bindings/spi/spi-bus.txt
>  
> +Optional properties:
> +See include/dt-bindings/iio/ad5755.h
> + - adi,ext_dc_dc_compenstation_resistor: boolean set if the hardware have an

Use - instead of _ in property names.

> +					 external resistor and thereby bypasses
> +					 the internal compensation resistor.
> + - adi,dc_dc_phase:
> +	Valid values for DC DC Phase control is:
> +	0: All dc-to-dc converters clock on the same edge.
> +	1: Channel A and Channel B clock on the same edge,
> +	   Channel C and Channel D clock on opposite edges.
> +	2: Channel A and Channel C clock on the same edge,
> +	   Channel B and Channel D clock on opposite edges.
> +	3: Channel A, Channel B, Channel C, and Channel D
> +	   clock 90 degrees out of phase from each other.
> + - adi,dc_dc_freq:
> +	Valid values for DC DC frequency is:
> +	0: 250 kHz.
> +	1: 410 kHz.
> +	2: 650 kHz.

It is preferrable to make the values the actual units rather than 
register values. Then we can have common properties. Is this a common 
property of a DAC?

> + - adi,dc_dc_maxv:
> +	Valid values for the maximum allowed Vboost voltage supplied by
> +	the dc-to-dc converter is:
> +	0: 23 V.
> +	1: 24.5 V.
> +	2: 27 V.
> +	3: 29.5 V.

Same here.

Rob

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