Root/
1 | Kernel driver twl4030-madc |
2 | ========================= |
3 | |
4 | Supported chips: |
5 | * Texas Instruments TWL4030 |
6 | Prefix: 'twl4030-madc' |
7 | |
8 | |
9 | Authors: |
10 | J Keerthy <j-keerthy@ti.com> |
11 | |
12 | Description |
13 | ----------- |
14 | |
15 | The Texas Instruments TWL4030 is a Power Management and Audio Circuit. Among |
16 | other things it contains a 10-bit A/D converter MADC. The converter has 16 |
17 | channels which can be used in different modes. |
18 | |
19 | |
20 | See this table for the meaning of the different channels |
21 | |
22 | Channel Signal |
23 | ------------------------------------------ |
24 | 0 Battery type(BTYPE) |
25 | 1 BCI: Battery temperature (BTEMP) |
26 | 2 GP analog input |
27 | 3 GP analog input |
28 | 4 GP analog input |
29 | 5 GP analog input |
30 | 6 GP analog input |
31 | 7 GP analog input |
32 | 8 BCI: VBUS voltage(VBUS) |
33 | 9 Backup Battery voltage (VBKP) |
34 | 10 BCI: Battery charger current (ICHG) |
35 | 11 BCI: Battery charger voltage (VCHG) |
36 | 12 BCI: Main battery voltage (VBAT) |
37 | 13 Reserved |
38 | 14 Reserved |
39 | 15 VRUSB Supply/Speaker left/Speaker right polarization level |
40 | |
41 | |
42 | The Sysfs nodes will represent the voltage in the units of mV, |
43 | the temperature channel shows the converted temperature in |
44 | degree celcius. The Battery charging current channel represents |
45 | battery charging current in mA. |
46 |
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