1Qualcomm PM8xxx PMIC multi-function devices 2 3The PM8xxx family of Power Management ICs are used to provide regulated 4voltages and other various functionality to Qualcomm SoCs. 5 6= PROPERTIES 7 8- compatible: 9 Usage: required 10 Value type: <string> 11 Definition: must be one of: 12 "qcom,pm8058" 13 "qcom,pm8921" 14 15- #address-cells: 16 Usage: required 17 Value type: <u32> 18 Definition: must be 1 19 20- #size-cells: 21 Usage: required 22 Value type: <u32> 23 Definition: must be 0 24 25- interrupts: 26 Usage: required 27 Value type: <prop-encoded-array> 28 Definition: specifies the interrupt that indicates a subdevice 29 has generated an interrupt (summary interrupt). The 30 format of the specifier is defined by the binding document 31 describing the node's interrupt parent. 32 33- #interrupt-cells: 34 Usage: required 35 Value type : <u32> 36 Definition: must be 2. Specifies the number of cells needed to encode 37 an interrupt source. The 1st cell contains the interrupt 38 number. The 2nd cell is the trigger type and level flags 39 encoded as follows: 40 41 1 = low-to-high edge triggered 42 2 = high-to-low edge triggered 43 4 = active high level-sensitive 44 8 = active low level-sensitive 45 46- interrupt-controller: 47 Usage: required 48 Value type: <empty> 49 Definition: identifies this node as an interrupt controller 50 51= SUBCOMPONENTS 52 53The PMIC contains multiple independent functions, each described in a subnode. 54The below bindings specify the set of valid subnodes. 55 56== Real-Time Clock 57 58- compatible: 59 Usage: required 60 Value type: <string> 61 Definition: must be one of: 62 "qcom,pm8058-rtc" 63 "qcom,pm8921-rtc" 64 "qcom,pm8941-rtc" 65 66- reg: 67 Usage: required 68 Value type: <prop-encoded-array> 69 Definition: single entry specifying the base address of the RTC registers 70 71- interrupts: 72 Usage: required 73 Value type: <prop-encoded-array> 74 Definition: single entry specifying the RTC's alarm interrupt 75 76- allow-set-time: 77 Usage: optional 78 Value type: <empty> 79 Definition: indicates that the setting of RTC time is allowed by 80 the host CPU 81 82= EXAMPLE 83 84 pmicintc: pmic@0 { 85 compatible = "qcom,pm8921"; 86 interrupts = <104 8>; 87 #interrupt-cells = <2>; 88 interrupt-controller; 89 #address-cells = <1>; 90 #size-cells = <0>; 91 92 rtc@11d { 93 compatible = "qcom,pm8921-rtc"; 94 reg = <0x11d>; 95 interrupts = <0x27 0>; 96 }; 97 }; 98