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
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======================
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Supported chips:
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* Microchip Technology MCP3021
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Prefix: 'mcp3021'
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Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/21805a.pdf
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Author: Mingkai Hu
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Description
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-----------
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This driver implements support for the Microchip Technology MCP3021 chip.
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The Microchip Technology Inc. MCP3021 is a successive approximation A/D
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converter (ADC) with 10-bit resolution.
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This device provides one single-ended input with very low power consumption.
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Communication to the MCP3021 is performed using a 2-wire I2C compatible
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interface. Standard (100 kHz) and Fast (400 kHz) I2C modes are available.
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The default I2C device address is 0x4d (contact the Microchip factory for
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additional address options).
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