From 10de07f446a6aea66c9fea937f8e3a498b1b6766 Mon Sep 17 00:00:00 2001
From: Clemens Gruber <clemens.gruber@pqgruber.com>
Date: Fri, 28 Oct 2016 00:33:44 +0200
Subject: [PATCH] hwmon: (mcp3021) add devicetree bindings documentation

Document the devicetree bindings for the Microchip MCP3021/3221.

Signed-off-by: Clemens Gruber <clemens.gruber@pqgruber.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
 .../devicetree/bindings/hwmon/mcp3021.txt     | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/hwmon/mcp3021.txt

diff --git a/Documentation/devicetree/bindings/hwmon/mcp3021.txt b/Documentation/devicetree/bindings/hwmon/mcp3021.txt
new file mode 100644
index 000000000000..294318ba6914
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/mcp3021.txt
@@ -0,0 +1,21 @@
+mcp3021 properties
+
+Required properties:
+- compatible: Must be one of the following:
+	- "microchip,mcp3021" for mcp3021
+	- "microchip,mcp3221" for mcp3221
+- reg: I2C address
+
+Optional properties:
+
+- reference-voltage-microvolt
+	Reference voltage in microvolt (uV)
+
+Example:
+
+mcp3021@4d {
+	compatible = "microchip,mcp3021";
+	reg = <0x4d>;
+
+	reference-voltage-microvolt = <4500000>; /* 4.5 V */
+};
-- 
2.39.2