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[deliverable/linux.git] / Documentation / devicetree / bindings / power / qcom,coincell-charger.txt
1 Qualcomm Coincell Charger:
2
3 The hardware block controls charging for a coincell or capacitor that is
4 used to provide power backup for certain features of the power management
5 IC (PMIC)
6
7 - compatible:
8 Usage: required
9 Value type: <string>
10 Definition: must be: "qcom,pm8941-coincell"
11
12 - reg:
13 Usage: required
14 Value type: <u32>
15 Definition: base address of the coincell charger registers
16
17 - qcom,rset-ohms:
18 Usage: required
19 Value type: <u32>
20 Definition: resistance (in ohms) for current-limiting resistor
21 must be one of: 800, 1200, 1700, 2100
22
23 - qcom,vset-millivolts:
24 Usage: required
25 Value type: <u32>
26 Definition: voltage (in millivolts) to apply for charging
27 must be one of: 2500, 3000, 3100, 3200
28
29 - qcom,charger-disable:
30 Usage: optional
31 Value type: <boolean>
32 Definition: defining this property disables charging
33
34 This charger is a sub-node of one of the 8941 PMIC blocks, and is specified
35 as a child node in DTS of that node. See ../mfd/qcom,spmi-pmic.txt and
36 ../mfd/qcom-pm8xxx.txt
37
38 Example:
39
40 pm8941@0 {
41 coincell@2800 {
42 compatible = "qcom,pm8941-coincell";
43 reg = <0x2800>;
44
45 qcom,rset-ohms = <2100>;
46 qcom,vset-millivolts = <3000>;
47 };
48 };
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