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Kernel driver mc13783-adc
=========================
Supported chips:
* Freescale MC13783
Prefix: 'mc13783'
Datasheet:
https://www.nxp.com/docs/en/data-sheet/MC13783.pdf
* Freescale MC13892
Prefix: 'mc13892'
Datasheet:
https://www.nxp.com/docs/en/data-sheet/MC13892.pdf
Authors:
- Sascha Hauer <s.hauer@pengutronix.de>
- Luotao Fu <l.fu@pengutronix.de>
Description
-----------
The Freescale MC13783 and MC13892 are Power Management and Audio Circuits.
Among other things they contain a
10-bit A/D converter. The converter has
16
(MC13783) resp.
12 (MC13892) channels which can be used in different modes. The
A/D converter has a resolution of
2.
25mV.
Some channels can be used as General Purpose inputs or in a dedicated mode with
a chip internal scaling applied .
Currently the driver only supports the Application Supply channel (BP / BPSNS),
the General Purpose inputs and touchscreen.
See the following tables for the meaning of the different channels and their
chip internal scaling:
- MC13783:
======= =============================================== =============== =======
Channel Signal Input Range Scaling
======= =============================================== =============== =======
0 Battery Voltage (BATT)
2.
50 -
4.
65V -
2.
40V
1 Battery Current (BATT - BATTISNS) -
50 -
50 mV x20
2 Application Supply (BP)
2.
50 -
4.
65V -
2.
40V
3 Charger Voltage (CHRGRAW)
0 -
10V / /
5
0 -
20V /
10
4 Charger Current (CHRGISNSP-CHRGISNSN) -
0.
25 -
0.
25V x4
5 General Purpose ADIN5 / Battery Pack Thermistor
0 -
2.
30V No
6 General Purpose ADIN6 / Backup Voltage (LICELL)
0 -
2.
30V / No /
1.
50 -
3.
50V -
1.
20V
7 General Purpose ADIN7 / UID / Die Temperature
0 -
2.
30V / No /
0 -
2.
55V / x0.
9 / No
8 General Purpose ADIN8
0 -
2.
30V No
9 General Purpose ADIN9
0 -
2.
30V No
10 General Purpose ADIN10
0 -
2.
30V No
11 General Purpose ADIN11
0 -
2.
30V No
12 General Purpose TSX1 / Touchscreen X-plate
1 0 -
2.
30V No
13 General Purpose TSX2 / Touchscreen X-plate
2 0 -
2.
30V No
14 General Purpose TSY1 / Touchscreen Y-plate
1 0 -
2.
30V No
15 General Purpose TSY2 / Touchscreen Y-plate
2 0 -
2.
30V No
======= =============================================== =============== =======
- MC13892:
======= =============================================== =============== =======
Channel Signal Input Range Scaling
======= =============================================== =============== =======
0 Battery Voltage (BATT)
0 -
4.
8V /
2
1 Battery Current (BATT - BATTISNSCC) -
60 -
60 mV x20
2 Application Supply (BPSNS)
0 -
4.
8V /
2
3 Charger Voltage (CHRGRAW)
0 -
12V / /
5
0 -
20V /
10
4 Charger Current (CHRGISNS-BPSNS) / -
0.
3 -
0.
3V / x4 /
Touchscreen X-plate
1 0 -
2.
4V No
5 General Purpose ADIN5 / Battery Pack Thermistor
0 -
2.
4V No
6 General Purpose ADIN6 / Backup Voltage (LICELL)
0 -
2.
4V / No
Backup Voltage (LICELL)
0 -
3.
6V x2/
3
7 General Purpose ADIN7 / UID / Die Temperature
0 -
2.
4V / No /
0 -
4.
8V /
2
12 General Purpose TSX1 / Touchscreen X-plate
1 0 -
2.
4V No
13 General Purpose TSX2 / Touchscreen X-plate
2 0 -
2.
4V No
14 General Purpose TSY1 / Touchscreen Y-plate
1 0 -
2.
4V No
15 General Purpose TSY2 / Touchscreen Y-plate
2 0 -
2.
4V No
======= =============================================== =============== =======
