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Message-ID: <1541778055-7629-1-git-send-email-stefan.popa@analog.com>
Date: Fri, 9 Nov 2018 17:40:55 +0200
From: Stefan Popa <stefan.popa@...log.com>
To: <jic23@...nel.org>, <robh+dt@...nel.org>
CC: <mark.rutland@....com>, <knaack.h@....de>, <lars@...afoo.de>,
<pmeerw@...erw.net>, <Michael.Hennerich@...log.com>,
<gregkh@...uxfoundation.org>, <linux-iio@...r.kernel.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<stefan.popa@...log.com>
Subject: [PATCH v4 2/4] dt-bindings: iio: adc: Add common ADCs properties to a separate file
There are several ADC drivers that depend on the same device tree
bindings. Rather than continue to duplicate the properties, this patch
adds a common adc binding document that can be referenced. For beginning,
only two properties are documented.
Signed-off-by: Stefan Popa <stefan.popa@...log.com>
---
Changes in v2, v3:
- N/A.
Changes in v4:
- Added this commit.
Documentation/devicetree/bindings/iio/adc/adc.txt | 25 +++++++++++++++++++++++
1 file changed, 25 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/adc/adc.txt
diff --git a/Documentation/devicetree/bindings/iio/adc/adc.txt b/Documentation/devicetree/bindings/iio/adc/adc.txt
new file mode 100644
index 0000000..1e3cc21
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adc.txt
@@ -0,0 +1,25 @@
+Common ADCs properties
+
+This binding is a work-in-progress
+
+Optional properties for child nodes:
+- bipolar : Boolean, if set the channel is used in bipolar mode.
+- diff-channels : Differential channels muxed for this ADC. The first value
+ specifies the positive input pin, the second value the negative
+ input pin.
+
+Example:
+ adc@0 {
+ compatible = "some,adc";
+ ...
+ channel@0 {
+ bipolar;
+ diff-channels = <0 1>;
+ ...
+ };
+
+ channel@1 {
+ diff-channels = <2 3>;
+ ...
+ };
+ };
--
2.7.4
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