Re: [PATCH v2 4/6] dt-bindings: iio: adc: mcp320x: Update for mcp3550/1/3

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On Sat, Sep 09, 2017 at 08:32:41PM +0200, Lukas Wunner wrote:
> All chips supported by this driver clock data out on the falling edge
> and latch data in on the rising edge, hence SPI mode (0,0) or (1,1)
> must be used.
> 
> Furthermore, none of the chips has an internal reference voltage
> regulator, so an external supply is always required and needs to be
> specified in the device tree lest the IIO "scale" in sysfs cannot be
> calculated.
> 
> Document these requirements in the device tree binding, add compatible
> strings for the newly supported mcp3550/1/3 and explain that SPI mode
> (0,0) should be preferred for these chips.
> 
> Cc: Mathias Duckeck <m.duckeck@xxxxxxxxx>
> Signed-off-by: Lukas Wunner <lukas@xxxxxxxxx>
> ---
> Changes since v1:
> - Move support for continuous conversion mode to separate patch
>   which is marked informational / not for merging. (Rob, Jonathan)
> 
>  Documentation/devicetree/bindings/iio/adc/mcp320x.txt | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)

Acked-by: Rob Herring <robh@xxxxxxxxxx>
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