[PATCH v2 2/2] iio:adc:at91-sama5d2: add support for signed conversion

[Lars-Peter Clausen]

On 03/07/2016 03:29 PM, Ludovic Desroches wrote:
> The at91-sama5d2 ADC controller can achieve unsigned and signed
> conversions. For each channel, a signed and an unsigned variant are
> created.
> Sign mode is a global configuration, it is not tied to a specific
> channel. For this reason, the controller has to be configured upon
> conversion request.

So, what's the difference between signed and unsigned mode?