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Documentation / devicetree / bindings / hwmon / ads1015.txt




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Based on kernel version 3.13. Page generated on 2014-01-20 22:01 EST.

1	ADS1015 (I2C)
2	
3	This device is a 12-bit A-D converter with 4 inputs.
4	
5	The inputs can be used single ended or in certain differential combinations.
6	
7	For configuration all possible combinations are mapped to 8 channels:
8	  0: Voltage over AIN0 and AIN1.
9	  1: Voltage over AIN0 and AIN3.
10	  2: Voltage over AIN1 and AIN3.
11	  3: Voltage over AIN2 and AIN3.
12	  4: Voltage over AIN0 and GND.
13	  5: Voltage over AIN1 and GND.
14	  6: Voltage over AIN2 and GND.
15	  7: Voltage over AIN3 and GND.
16	
17	Each channel can be configured individually:
18	 - pga is the programmable gain amplifier (values are full scale)
19	    0: +/- 6.144 V
20	    1: +/- 4.096 V
21	    2: +/- 2.048 V (default)
22	    3: +/- 1.024 V
23	    4: +/- 0.512 V
24	    5: +/- 0.256 V
25	 - data_rate in samples per second
26	    0: 128
27	    1: 250
28	    2: 490
29	    3: 920
30	    4: 1600 (default)
31	    5: 2400
32	    6: 3300
33	
34	1) The /ads1015 node
35	
36	  Required properties:
37	
38	   - compatible : must be "ti,ads1015"
39	   - reg : I2C bus address of the device
40	   - #address-cells : must be <1>
41	   - #size-cells : must be <0>
42	
43	  The node contains child nodes for each channel that the platform uses.
44	
45	  Example ADS1015 node:
46	
47	    ads1015@49 {
48		    compatible = "ti,ads1015";
49		    reg = <0x49>;
50		    #address-cells = <1>;
51		    #size-cells = <0>;
52	
53		    [ child node definitions... ]
54	    }
55	
56	2) channel nodes
57	
58	  Required properties:
59	
60	   - reg : the channel number
61	
62	  Optional properties:
63	
64	   - ti,gain : the programmable gain amplifier setting
65	   - ti,datarate : the converter data rate
66	
67	  Example ADS1015 channel node:
68	
69	    channel@4 {
70		    reg = <4>;
71		    ti,gain = <3>;
72		    ti,datarate = <5>;
73	    };
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