Alexander Stein 299b207dbc Input: ads7846: Add description how to use internal reference (ADS7846) ...

By simply setting vref-mv to 0 the internal reference will be used.
Document that!

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Rob Herring <robh@kernel.org>

2016-03-03 17:28:52 -06:00

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