projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| ee2b7f60 TB |
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> | |
| b7f97b3a | 32 | Definition: defining this property disables charging |
| ee2b7f60 TB |
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 | }; |