| 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"; |
| }; |
