xref: /linux/Documentation/devicetree/bindings/hwmon/ltc2990.txt (revision 3eb66e91a25497065c5322b1268cbc3953642227)
1*7de859fcSTom Levensltc2990: Linear Technology LTC2990 power monitor
2*7de859fcSTom Levens
3*7de859fcSTom LevensRequired properties:
4*7de859fcSTom Levens- compatible: Must be "lltc,ltc2990"
5*7de859fcSTom Levens- reg: I2C slave address
6*7de859fcSTom Levens- lltc,meas-mode:
7*7de859fcSTom Levens	An array of two integers for configuring the chip measurement mode.
8*7de859fcSTom Levens
9*7de859fcSTom Levens	The first integer defines the bits 2..0 in the control register. In all
10*7de859fcSTom Levens	cases the internal temperature and supply voltage are measured. In
11*7de859fcSTom Levens	addition the following input measurements are enabled per mode:
12*7de859fcSTom Levens
13*7de859fcSTom Levens		0: V1, V2, TR2
14*7de859fcSTom Levens		1: V1-V2, TR2
15*7de859fcSTom Levens		2: V1-V2, V3, V4
16*7de859fcSTom Levens		3: TR1, V3, V4
17*7de859fcSTom Levens		4: TR1, V3-V4
18*7de859fcSTom Levens		5: TR1, TR2
19*7de859fcSTom Levens		6: V1-V2, V3-V4
20*7de859fcSTom Levens		7: V1, V2, V3, V4
21*7de859fcSTom Levens
22*7de859fcSTom Levens	The second integer defines the bits 4..3 in the control register. This
23*7de859fcSTom Levens	allows a subset of the measurements to be enabled:
24*7de859fcSTom Levens
25*7de859fcSTom Levens		0: Internal temperature and supply voltage only
26*7de859fcSTom Levens		1: TR1, V1 or V1-V2 only per mode
27*7de859fcSTom Levens		2: TR2, V3 or V3-V4 only per mode
28*7de859fcSTom Levens		3: All measurements per mode
29*7de859fcSTom Levens
30*7de859fcSTom LevensExample:
31*7de859fcSTom Levens
32*7de859fcSTom Levensltc2990@4c {
33*7de859fcSTom Levens	compatible = "lltc,ltc2990";
34*7de859fcSTom Levens	reg = <0x4c>;
35*7de859fcSTom Levens	lltc,meas-mode = <7 3>;	/* V1, V2, V3, V4 */
36*7de859fcSTom Levens};
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