59 lines
1.8 KiB
Plaintext
59 lines
1.8 KiB
Plaintext
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Freescale i.MX25 ADC GCQ device
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This is a generic conversion queue device that can convert any of the
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analog inputs using the ADC unit of the i.MX25.
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Required properties:
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- compatible: Should be "fsl,imx25-gcq".
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- reg: Should be the register range of the module.
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- interrupts: Should be the interrupt number of the module.
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Typically this is <1>.
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- interrupt-parent: phandle to the tsadc module of the i.MX25.
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- #address-cells: Should be <1> (setting for the subnodes)
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- #size-cells: Should be <0> (setting for the subnodes)
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Optional properties:
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- vref-ext-supply: The regulator supplying the ADC reference voltage.
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Required when at least one subnode uses the this reference.
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- vref-xp-supply: The regulator supplying the ADC reference voltage on pin XP.
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Required when at least one subnode uses this reference.
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- vref-yp-supply: The regulator supplying the ADC reference voltage on pin YP.
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Required when at least one subnode uses this reference.
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Sub-nodes:
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Optionally you can define subnodes which define the reference voltage
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for the analog inputs.
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Required properties for subnodes:
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- reg: Should be the number of the analog input.
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0: xp
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1: yp
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2: xn
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3: yn
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4: wiper
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5: inaux0
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6: inaux1
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7: inaux2
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Optional properties for subnodes:
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- fsl,adc-refp: specifies the positive reference input as defined in
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<dt-bindings/iio/adc/fsl-imx25-gcq.h>
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- fsl,adc-refn: specifies the negative reference input as defined in
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<dt-bindings/iio/adc/fsl-imx25-gcq.h>
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Example:
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adc: adc@50030800 {
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compatible = "fsl,imx25-gcq";
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reg = <0x50030800 0x60>;
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interrupt-parent = <&tscadc>;
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interrupts = <1>;
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#address-cells = <1>;
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#size-cells = <0>;
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inaux@5 {
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reg = <5>;
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fsl,adc-refp = <MX25_ADC_REFP_INT>;
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fsl,adc-refn = <MX25_ADC_REFN_NGND>;
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};
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};
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