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diff --git a/Documentation/hwmon/max127.rst b/Documentation/hwmon/max127.rst new file mode 100644 index 000000000..dc192dd9c --- /dev/null +++ b/Documentation/hwmon/max127.rst @@ -0,0 +1,45 @@ +.. SPDX-License-Identifier: GPL-2.0-or-later + +Kernel driver max127 +==================== + +Author: + + * Tao Ren <rentao.bupt@gmail.com> + +Supported chips: + + * Maxim MAX127 + + Prefix: 'max127' + + Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX127-MAX128.pdf + +Description +----------- + +The MAX127 is a multirange, 12-bit data acquisition system (DAS) providing +8 analog input channels that are independently software programmable for +a variety of ranges. The available ranges are {0,5V}, {0,10V}, {-5,5V} +and {-10,10V}. + +The MAX127 features a 2-wire, I2C-compatible serial interface that allows +communication among multiple devices using SDA and SCL lines. + +Sysfs interface +--------------- + + ============== ============================================================== + in[0-7]_input The input voltage (in mV) of the corresponding channel. + RO + + in[0-7]_min The lower input limit (in mV) for the corresponding channel. + ADC range and LSB will be updated when the limit is changed. + For the MAX127, it will be adjusted to -10000, -5000, or 0. + RW + + in[0-7]_max The higher input limit (in mV) for the corresponding channel. + ADC range and LSB will be updated when the limit is changed. + For the MAX127, it will be adjusted to 0, 5000, or 10000. + RW + ============== ============================================================== |