From: Gregory CLEMENT <gregory.clement@bootlin.com>
Date: Fri, 15 Mar 2019 09:52:31 +0000 (+0100)
Subject: dt-bindings: iio: adc: lpc32xx-adc: Document vref-supply
X-Git-Tag: v5.2-rc1~153^2~149^2~58
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=caeffabc36cbb6a3cdfe5b7894f8e1bfef6504b3;p=linux.git

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>
---

diff --git a/Documentation/devicetree/bindings/iio/adc/lpc32xx-adc.txt b/Documentation/devicetree/bindings/iio/adc/lpc32xx-adc.txt
index b3629d3a9adf..3a1bc669bd51 100644
--- a/Documentation/devicetree/bindings/iio/adc/lpc32xx-adc.txt
+++ b/Documentation/devicetree/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>;
 	};