| Tim Bird | ee2b7f6 | 2015-07-16 16:55:31 -0700 | [diff] [blame] | 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> |
| Eric Engestrom | b7f97b3 | 2016-04-25 01:24:18 +0100 | [diff] [blame] | 32 | Definition: defining this property disables charging |
| Tim Bird | ee2b7f6 | 2015-07-16 16:55:31 -0700 | [diff] [blame] | 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 | }; |