Kernel-4.18.0-80.el8_fsl,imx25-gcq

Freescale i.MX25 ADC GCQ device

This is a generic conversion queue device that can convert any of the
analog inputs using the ADC unit of the i.MX25.

Required properties:

• compatible: Should be “fsl,imx25-gcq”.
• reg: Should be the register range of the module.
• interrupts: Should be the interrupt number of the module.
  Typically this is <1>.
• interrupt-parent: phandle to the tsadc module of the i.MX25.
• #address-cells: Should be <1> (setting for the subnodes)
• #size-cells: Should be <0> (setting for the subnodes)

Optional properties:

• vref-ext-supply: The regulator supplying the ADC reference voltage.
  Required when at least one subnode uses the this reference.
• vref-xp-supply: The regulator supplying the ADC reference voltage on pin XP.
  Required when at least one subnode uses this reference.
• vref-yp-supply: The regulator supplying the ADC reference voltage on pin YP.
  Required when at least one subnode uses this reference.

Sub-nodes:
Optionally you can define subnodes which define the reference voltage
for the analog inputs.

Required properties for subnodes:

• reg: Should be the number of the analog input.
  0: xp
  1: yp
  2: xn
  3: yn
  4: wiper
  5: inaux0
  6: inaux1
  7: inaux2
  Optional properties for subnodes:
• fsl,adc-refp: specifies the positive reference input as defined in
  <dt-bindings/iio/adc/fsl-imx25-gcq.h>
• fsl,adc-refn: specifies the negative reference input as defined in
  <dt-bindings/iio/adc/fsl-imx25-gcq.h>

Example:

adc: adc@50030800 {
    compatible = "fsl,imx25-gcq";
    reg = <0x50030800 0x60>;
    interrupt-parent = <&tscadc>;
    interrupts = <1>;
    #address-cells = <1>;
    #size-cells = <0>;

    inaux@5 {
        reg = <5>;
        fsl,adc-refp = <MX25_ADC_REFP_INT>;
        fsl,adc-refn = <MX25_ADC_REFN_NGND>;
    };
};