mirror of
https://github.com/torvalds/linux.git
synced 2024-12-26 04:42:12 +00:00
5510e62a66
Add I2C driver for MCP3021 that is an ADC chip from Microchip. The MCP3021 is a successive approximation A/D converter (ADC) with 10-bit resolution. The driver export the value of Vin to sysfs, the voltage unit is mV. Through the sysfs interface, lm-sensors tool can also display Vin voltage. Signed-off-by: Mingkai Hu <Mingkai.hu@freescale.com> Signed-off-by: Xie Xiaobo <X.Xie@freescale.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
23 lines
751 B
Plaintext
23 lines
751 B
Plaintext
Kernel driver MCP3021
|
|
======================
|
|
|
|
Supported chips:
|
|
* Microchip Technology MCP3021
|
|
Prefix: 'mcp3021'
|
|
Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/21805a.pdf
|
|
|
|
Author: Mingkai Hu
|
|
|
|
Description
|
|
-----------
|
|
|
|
This driver implements support for the Microchip Technology MCP3021 chip.
|
|
|
|
The Microchip Technology Inc. MCP3021 is a successive approximation A/D
|
|
converter (ADC) with 10-bit resolution.
|
|
This device provides one single-ended input with very low power consumption.
|
|
Communication to the MCP3021 is performed using a 2-wire I2C compatible
|
|
interface. Standard (100 kHz) and Fast (400 kHz) I2C modes are available.
|
|
The default I2C device address is 0x4d (contact the Microchip factory for
|
|
additional address options).
|