100 lines
2.3 KiB
Plaintext
Executable file
100 lines
2.3 KiB
Plaintext
Executable file
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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