|Kernel driver powr1220
| * Lattice POWR1220AT8
| Prefix: 'powr1220'
| Addresses scanned: none
| Datasheet: Publicly available at the Lattice website
|Author: Scott Kanowitz <email@example.com>
|This driver supports the Lattice POWR1220AT8 chip. The POWR1220
|includes voltage monitoring for 14 inputs as well as trim settings
|for output voltages and GPIOs. This driver implements the voltage
|monitoring portion of the chip.
|Voltages are sampled by a 12-bit ADC with a step size of 2 mV.
|An in-line attenuator allows measurements from 0 to 6 V. The
|attenuator is enabled or disabled depending on the setting of the
|input's max value. The driver will enable the attenuator for any
|value over the low measurement range maximum of 2 V.
|The input naming convention is as follows:
|driver name pin name
|The ADC readings are updated on request with a minimum period of 1s.