Kernel-4.18.0-80.el8_qcom,spmi-iadc

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:
  Definition: Should contain “qcom,spmi-iadc”.

• reg:
  Usage: required
  Value type:
  Definition: IADC base address and length in the SPMI PMIC register map

• interrupts:
  Usage: optional
  Value type:
  Definition: End of ADC conversion.

• qcom,external-resistor-micro-ohms:
  Usage: optional
  Value type:
  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";
};