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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | Qualcomm's SPMI PMIC current ADC QPNP PMIC current ADC (IADC) provides interface to clients to read current. A 16 bit ADC is used for current measurements. IADC can measure the current through an external resistor (channel 1) or internal (built-in) resistor (channel 0). When using an external resistor it is to be described by qcom,external-resistor-micro-ohms property. IADC node: - compatible: Usage: required Value type: <string> Definition: Should contain "qcom,spmi-iadc". - reg: Usage: required Value type: <prop-encoded-array> Definition: IADC base address and length in the SPMI PMIC register map - interrupts: Usage: optional Value type: <prop-encoded-array> Definition: End of ADC conversion. - qcom,external-resistor-micro-ohms: Usage: optional Value type: <u32> Definition: Sense resister value in micro Ohm. If not defined value of 10000 micro Ohms will be used. Example: /* IADC node */ pmic_iadc: iadc@3600 { compatible = "qcom,spmi-iadc"; reg = <0x3600 0x100>; interrupts = <0x0 0x36 0x0 IRQ_TYPE_EDGE_RISING>; qcom,external-resistor-micro-ohms = <10000>; #io-channel-cells = <1>; }; /* IIO client node */ bat { io-channels = <&pmic_iadc 0>; io-channel-names = "iadc"; }; |