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99 lines
2.3 KiB
99 lines
2.3 KiB
Qualcomm PM8xxx PMIC multi-function devices |
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The PM8xxx family of Power Management ICs are used to provide regulated |
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voltages and other various functionality to Qualcomm SoCs. |
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= PROPERTIES |
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- compatible: |
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Usage: required |
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Value type: <string> |
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Definition: must be one of: |
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"qcom,pm8058" |
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"qcom,pm8821" |
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"qcom,pm8921" |
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- #address-cells: |
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Usage: required |
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Value type: <u32> |
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Definition: must be 1 |
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- #size-cells: |
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Usage: required |
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Value type: <u32> |
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Definition: must be 0 |
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- interrupts: |
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Usage: required |
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Value type: <prop-encoded-array> |
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Definition: specifies the interrupt that indicates a subdevice |
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has generated an interrupt (summary interrupt). The |
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format of the specifier is defined by the binding document |
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describing the node's interrupt parent. |
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- #interrupt-cells: |
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Usage: required |
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Value type : <u32> |
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Definition: must be 2. Specifies the number of cells needed to encode |
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an interrupt source. The 1st cell contains the interrupt |
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number. The 2nd cell is the trigger type and level flags |
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encoded as follows: |
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1 = low-to-high edge triggered |
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2 = high-to-low edge triggered |
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4 = active high level-sensitive |
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8 = active low level-sensitive |
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- interrupt-controller: |
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Usage: required |
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Value type: <empty> |
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Definition: identifies this node as an interrupt controller |
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= SUBCOMPONENTS |
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The PMIC contains multiple independent functions, each described in a subnode. |
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The below bindings specify the set of valid subnodes. |
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== Real-Time Clock |
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- compatible: |
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Usage: required |
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Value type: <string> |
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Definition: must be one of: |
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"qcom,pm8058-rtc" |
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"qcom,pm8921-rtc" |
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"qcom,pm8941-rtc" |
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"qcom,pm8018-rtc" |
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- reg: |
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Usage: required |
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Value type: <prop-encoded-array> |
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Definition: single entry specifying the base address of the RTC registers |
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- interrupts: |
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Usage: required |
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Value type: <prop-encoded-array> |
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Definition: single entry specifying the RTC's alarm interrupt |
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- allow-set-time: |
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Usage: optional |
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Value type: <empty> |
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Definition: indicates that the setting of RTC time is allowed by |
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the host CPU |
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= EXAMPLE |
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pmicintc: pmic@0 { |
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compatible = "qcom,pm8921"; |
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interrupts = <104 8>; |
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#interrupt-cells = <2>; |
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interrupt-controller; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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rtc@11d { |
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compatible = "qcom,pm8921-rtc"; |
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reg = <0x11d>; |
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interrupts = <0x27 0>; |
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}; |
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};
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