Based on kernel version 4.16.1. Page generated on 2018-04-09 11:53 EST.
1 Cirrus Logic EP93xx ADC driver. 2 3 1. Overview 4 5 The driver is intended to work on both low-end (EP9301, EP9302) devices with 6 5-channel ADC and high-end (EP9307, EP9312, EP9315) devices with 10-channel 7 touchscreen/ADC module. 8 9 2. Channel numbering 10 11 Numbering scheme for channels 0..4 is defined in EP9301 and EP9302 datasheets. 12 EP9307, EP9312 and EP9312 have 3 channels more (total 8), but the numbering is 13 not defined. So the last three are numbered randomly, let's say. 14 15 Assuming ep93xx_adc is IIO device0, you'd find the following entries under 16 /sys/bus/iio/devices/iio:device0/: 17 18 +-----------------+---------------+ 19 | sysfs entry | ball/pin name | 20 +-----------------+---------------+ 21 | in_voltage0_raw | YM | 22 | in_voltage1_raw | SXP | 23 | in_voltage2_raw | SXM | 24 | in_voltage3_raw | SYP | 25 | in_voltage4_raw | SYM | 26 | in_voltage5_raw | XP | 27 | in_voltage6_raw | XM | 28 | in_voltage7_raw | YP | 29 +-----------------+---------------+