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dt-bindings: iio: adc: lpc32xx-adc: Document vref-supply
As most of the other ADC the lpc32xx one use a vref-supply property: document it. Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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@ -6,6 +6,10 @@ Required properties:
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region.
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- interrupts: The ADC interrupt
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Optional:
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- vref-supply: The regulator supply ADC reference voltage, optional
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for legacy reason, but highly encouraging to us in new device tree
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Example:
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adc@40048000 {
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@ -13,4 +17,5 @@ Example:
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reg = <0x40048000 0x1000>;
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interrupt-parent = <&mic>;
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interrupts = <39 0>;
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vref-supply = <&vcc>;
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};
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