iio: adc: meson-saradc: initialize the bandgap correctly on older SoCs

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Meson8 and Meson8b do not have the MESON_SAR_ADC_REG11 register. The
bandgap setting for these SoCs is configured in the
MESON_SAR_ADC_DELTA_10 register instead.
Make the driver aware of this difference and use the correct bandgap
register depending on the SoC.
This has worked fine on Meson8 and Meson8b because the bootloader is
already initializing the bandgap setting.

Fixes: 6c76ed31cd ("iio: adc: meson-saradc: add Meson8b SoC compatibility")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

...

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Martin Blumenstingl 2017-10-31 21:01:44 +01:00 • committed by Jonathan Cameron

parent 7a6b0420d2

commit d85eed9f57

1 changed files with 26 additions and 7 deletions

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drivers/iio/adc/meson_saradc.c

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