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-rw-r--r--dts/Bindings/iio/adc/lpc32xx-adc.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/dts/Bindings/iio/adc/lpc32xx-adc.txt b/dts/Bindings/iio/adc/lpc32xx-adc.txt
index b3629d3..3a1bc66 100644
--- a/dts/Bindings/iio/adc/lpc32xx-adc.txt
+++ b/dts/Bindings/iio/adc/lpc32xx-adc.txt
@@ -6,6 +6,10 @@ Required properties:
region.
- interrupts: The ADC interrupt
+Optional:
+ - vref-supply: The regulator supply ADC reference voltage, optional
+ for legacy reason, but highly encouraging to us in new device tree
+
Example:
adc@40048000 {
@@ -13,4 +17,5 @@ Example:
reg = <0x40048000 0x1000>;
interrupt-parent = <&mic>;
interrupts = <39 0>;
+ vref-supply = <&vcc>;
};