Kernel-4.18.0-80.el8_brcm,iproc-static-adc

  • Broadcom’s IPROC Static ADC controller

Broadcom iProc ADC controller has 8 channels 10bit ADC.
Allows user to convert analog input voltage values to digital.

Required properties:

  • compatible: Must be “brcm,iproc-static-adc”

  • adc-syscon: Handler of syscon node defining physical base address of the
    controller and length of memory mapped region.

  • #io-channel-cells = <1>; As ADC has multiple outputs
    refer to Documentation/devicetree/bindings/iio/iio-bindings.txt for details.

  • io-channel-ranges:
    refer to Documentation/devicetree/bindings/iio/iio-bindings.txt for details.

  • clocks: Clock used for this block.

  • clock-names: Clock name should be given as tsc_clk.

  • interrupts: interrupt line number.

For example:

ts_adc_syscon: ts_adc_syscon@180a6000 {
    compatible = "brcm,iproc-ts-adc-syscon","syscon";
    reg = <0x180a6000 0xc30>;
};

adc: adc@180a6000 {
    compatible = "brcm,iproc-static-adc";
    adc-syscon = <&ts_adc_syscon>;
    #io-channel-cells = <1>;
    io-channel-ranges;
    clocks = <&asiu_clks BCM_CYGNUS_ASIU_ADC_CLK>;
    clock-names = "tsc_clk";
    interrupts = <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>;
};