qcom-pm8xxx.txt

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    1 Qualcomm PM8xxx PMIC multi-function devices
    2 
    3 The PM8xxx family of Power Management ICs are used to provide regulated
    4 voltages 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,pm8821"
   14                     "qcom,pm8921"
   15 
   16 - #address-cells:
   17         Usage: required
   18         Value type: <u32>
   19         Definition: must be 1
   20 
   21 - #size-cells:
   22         Usage: required
   23         Value type: <u32>
   24         Definition: must be 0
   25 
   26 - interrupts:
   27         Usage: required
   28         Value type: <prop-encoded-array>
   29         Definition: specifies the interrupt that indicates a subdevice
   30                     has generated an interrupt (summary interrupt). The
   31                     format of the specifier is defined by the binding document
   32                     describing the node's interrupt parent.
   33 
   34 - #interrupt-cells:
   35         Usage: required
   36         Value type : <u32>
   37         Definition: must be 2. Specifies the number of cells needed to encode
   38                     an interrupt source. The 1st cell contains the interrupt
   39                     number. The 2nd cell is the trigger type and level flags
   40                     encoded as follows:
   41 
   42                         1 = low-to-high edge triggered
   43                         2 = high-to-low edge triggered
   44                         4 = active high level-sensitive
   45                         8 = active low level-sensitive
   46 
   47 - interrupt-controller:
   48         Usage: required
   49         Value type: <empty>
   50         Definition: identifies this node as an interrupt controller
   51 
   52 = SUBCOMPONENTS
   53 
   54 The PMIC contains multiple independent functions, each described in a subnode.
   55 The below bindings specify the set of valid subnodes.
   56 
   57 == Real-Time Clock
   58 
   59 - compatible:
   60         Usage: required
   61         Value type: <string>
   62         Definition: must be one of:
   63                     "qcom,pm8058-rtc"
   64                     "qcom,pm8921-rtc"
   65                     "qcom,pm8941-rtc"
   66                     "qcom,pm8018-rtc"
   67 
   68 - reg:
   69         Usage: required
   70         Value type: <prop-encoded-array>
   71         Definition: single entry specifying the base address of the RTC registers
   72 
   73 - interrupts:
   74         Usage: required
   75         Value type: <prop-encoded-array>
   76         Definition: single entry specifying the RTC's alarm interrupt
   77 
   78 - allow-set-time:
   79         Usage: optional
   80         Value type: <empty>
   81         Definition: indicates that the setting of RTC time is allowed by
   82                     the host CPU
   83 
   84 = EXAMPLE
   85 
   86         pmicintc: pmic@0 {
   87                 compatible = "qcom,pm8921";
   88                 interrupts = <104 8>;
   89                 #interrupt-cells = <2>;
   90                 interrupt-controller;
   91                 #address-cells = <1>;
   92                 #size-cells = <0>;
   93 
   94                 rtc@11d {
   95                         compatible = "qcom,pm8921-rtc";
   96                         reg = <0x11d>;
   97                         interrupts = <0x27 0>;
   98                 };
   99         };

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