1Kernel driver mc13783-adc
2=========================
3
4Supported chips:
5
6  * Freescale MC13783
7
8    Prefix: 'mc13783'
9
10    Datasheet: https://www.nxp.com/docs/en/data-sheet/MC13783.pdf
11
12  * Freescale MC13892
13
14    Prefix: 'mc13892'
15
16    Datasheet: https://www.nxp.com/docs/en/data-sheet/MC13892.pdf
17
18
19
20Authors:
21
22   - Sascha Hauer <s.hauer@pengutronix.de>
23   - Luotao Fu <l.fu@pengutronix.de>
24
25Description
26-----------
27
28The Freescale MC13783 and MC13892 are Power Management and Audio Circuits.
29Among other things they contain a 10-bit A/D converter. The converter has 16
30(MC13783) resp. 12 (MC13892) channels which can be used in different modes. The
31A/D converter has a resolution of 2.25mV.
32
33Some channels can be used as General Purpose inputs or in a dedicated mode with
34a chip internal scaling applied .
35
36Currently the driver only supports the Application Supply channel (BP / BPSNS),
37the General Purpose inputs and touchscreen.
38
39See the following tables for the meaning of the different channels and their
40chip internal scaling:
41
42- MC13783:
43
44======= =============================================== =============== =======
45Channel	Signal						Input Range	Scaling
46======= =============================================== =============== =======
470	Battery Voltage (BATT)				2.50 - 4.65V	-2.40V
481	Battery Current (BATT - BATTISNS)		-50 - 50 mV	x20
492	Application Supply (BP)				2.50 - 4.65V	-2.40V
503	Charger Voltage (CHRGRAW)			0 - 10V /	/5
51							0 - 20V		/10
524	Charger Current (CHRGISNSP-CHRGISNSN)		-0.25 - 0.25V	x4
535	General Purpose ADIN5 / Battery Pack Thermistor	0 - 2.30V	No
546	General Purpose ADIN6 / Backup Voltage (LICELL)	0 - 2.30V /	No /
55							1.50 - 3.50V	-1.20V
567	General Purpose ADIN7 / UID / Die Temperature	0 - 2.30V /	No /
57							0 - 2.55V /	x0.9 / No
588	General Purpose ADIN8				0 - 2.30V	No
599	General Purpose ADIN9				0 - 2.30V	No
6010	General Purpose ADIN10				0 - 2.30V	No
6111	General Purpose ADIN11				0 - 2.30V	No
6212	General Purpose TSX1 / Touchscreen X-plate 1	0 - 2.30V	No
6313	General Purpose TSX2 / Touchscreen X-plate 2	0 - 2.30V	No
6414	General Purpose TSY1 / Touchscreen Y-plate 1	0 - 2.30V	No
6515	General Purpose TSY2 / Touchscreen Y-plate 2	0 - 2.30V	No
66======= =============================================== =============== =======
67
68- MC13892:
69
70======= =============================================== =============== =======
71Channel	Signal						Input Range	Scaling
72======= =============================================== =============== =======
730	Battery Voltage (BATT)				0 - 4.8V	/2
741	Battery Current (BATT - BATTISNSCC)		-60 - 60 mV	x20
752	Application Supply (BPSNS)			0 - 4.8V	/2
763	Charger Voltage (CHRGRAW)			0 - 12V /	/5
77							0 - 20V		/10
784	Charger Current (CHRGISNS-BPSNS) /		-0.3 - 0.3V /	x4 /
79	Touchscreen X-plate 1				0 - 2.4V	No
805	General Purpose ADIN5 /	Battery Pack Thermistor	0 - 2.4V	No
816	General Purpose ADIN6 / Backup Voltage (LICELL)	0 - 2.4V /	No
82	Backup Voltage (LICELL)                        	0 - 3.6V	x2/3
837	General Purpose ADIN7 / UID / Die Temperature	0 - 2.4V /	No /
84							0 - 4.8V	/2
8512	General Purpose TSX1 / Touchscreen X-plate 1	0 - 2.4V	No
8613	General Purpose TSX2 / Touchscreen X-plate 2	0 - 2.4V	No
8714	General Purpose TSY1 / Touchscreen Y-plate 1	0 - 2.4V	No
8815	General Purpose TSY2 / Touchscreen Y-plate 2	0 - 2.4V	No
89======= =============================================== =============== =======
90