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Tip revision: 0d02ec6b3136c73c09e7859f0d0e4e2c4c07b49b authored by Linus Torvalds on 21 March 2021, 21:56:43 UTC
Linux 5.12-rc4
Tip revision: 0d02ec6
twl4030-madc-hwmon.rst
Kernel driver twl4030-madc
==========================

Supported chips:

	* Texas Instruments TWL4030

	Prefix: 'twl4030-madc'


Authors:
	J Keerthy <j-keerthy@ti.com>

Description
-----------

The Texas Instruments TWL4030 is a Power Management and Audio Circuit. Among
other things it contains a 10-bit A/D converter MADC. The converter has 16
channels which can be used in different modes.


See this table for the meaning of the different channels

======= ==========================================================
Channel Signal
======= ==========================================================
0	Battery type(BTYPE)
1	BCI: Battery temperature (BTEMP)
2	GP analog input
3	GP analog input
4	GP analog input
5	GP analog input
6	GP analog input
7	GP analog input
8	BCI: VBUS voltage(VBUS)
9	Backup Battery voltage (VBKP)
10	BCI: Battery charger current (ICHG)
11	BCI: Battery charger voltage (VCHG)
12	BCI: Main battery voltage (VBAT)
13	Reserved
14	Reserved
15	VRUSB Supply/Speaker left/Speaker right polarization level
======= ==========================================================


The Sysfs nodes will represent the voltage in the units of mV,
the temperature channel shows the converted temperature in
degree Celsius. The Battery charging current channel represents
battery charging current in mA.
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