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1df9d1d4a1
Add platform_data for the driver which allows to specify whether an external reference voltage is used or not. It is not possible to use the return value of regulator_get() for this since the regulator framework is able to return a dummy regulator in case no regulator has been specified. In this case the driver will always get a valid regulator, no matter if it has been specified or not. Also make the regulator non-optional if platform_data states that an external reference voltage should be used. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>