tree a7ba3dbbec23f715395c8c192abab1c55ee6a9e3
parent e3f6e7263b823c9a43ec5a24be68adad54897666
author Quentin Schulz <quentin.schulz@free-electrons.com> 1491383190 +0200
committer Jonathan Cameron <jic23@kernel.org> 1491669347 +0100

iio: adc: sun4i-gpadc-iio: add support for A33 thermal sensor

This adds support for the Allwinner A33 thermal sensor.

Unlike the A10, A13 and A31, the Allwinner A33 only has one channel
which is dedicated to the thermal sensor. Moreover, its thermal sensor
does not generate interruptions, thus we only need to directly read the
register storing the temperature value.

The MFD used by the A10, A13 and A31, was created to avoid breaking the
DT binding, but since the nodes for the ADC weren't there for the A33,
it is not needed.

Though the A33 does not have an internal ADC, it has a thermal sensor
which shares the same registers with GPADC of the already supported SoCs
and almost the same bits, for the same purpose (thermal sensor).

The thermal sensor behaves exactly the same (except the presence of
interrupts or not) on the different SoCs.

Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>