iio: adc: Add driver for Marvell 88PM886 PMIC ADC

Marvell's 88PM886 PMIC has a so-called General Purpose ADC used for
monitoring various system voltages and temperatures. Add the relevant
register definitions to the MFD header and a driver for the ADC.

Acked-by: Karel Balej <balejk@matfyz.cz> # for the PMIC
Signed-off-by: Duje Mihanović <duje@dujemihanovic.xyz>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Duje Mihanović 2025-09-11 14:43:45 +02:00 • committed by Jonathan Cameron
commit 3422b4bc60
5 changed files with 470 additions and 0 deletions