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Message-ID: <20180730135956.4611-1-mircea.caprioru@analog.com>
Date: Mon, 30 Jul 2018 16:59:55 +0300
From: Mircea Caprioru <mircea.caprioru@...log.com>
To: unlisted-recipients:; (no To-header on input)
CC: Mircea Caprioru <mircea.caprioru@...log.com>,
Jonathan Cameron <jic23@...nel.org>,
Hartmut Knaack <knaack.h@....de>,
Lars-Peter Clausen <lars@...afoo.de>,
Peter Meerwald-Stadler <pmeerw@...erw.net>,
Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Linus Walleij <linus.walleij@...aro.org>,
Sedat Dilek <sedat.dilek@...il.com>,
"Rafael Aquini" <aquini@...hat.com>,
"David S. Miller" <davem@...emloft.net>,
"Ludovic Desroches" <ludovic.desroches@...inux.fr>,
Florian Fainelli <f.fainelli@...il.com>,
Randy Dunlap <rdunlap@...radead.org>,
"Kuppuswamy Sathyanarayanan"
<sathyanarayanan.kuppuswamy@...ux.intel.com>,
<linux-iio@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>
Subject: [PATCH 1/2] dt-bindings: iio: dac: Add docs for AD5770R DAC
Adding dt-bindings documentation for AD5770R DAC. The bindings follow the
standard SPI and fixed regulator bindings.
Signed-off-by: Mircea Caprioru <mircea.caprioru@...log.com>
---
.../devicetree/bindings/iio/dac/ad5770r.txt | 86 +++++++++++++++++++
MAINTAINERS | 7 ++
2 files changed, 93 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/dac/ad5770r.txt
diff --git a/Documentation/devicetree/bindings/iio/dac/ad5770r.txt b/Documentation/devicetree/bindings/iio/dac/ad5770r.txt
new file mode 100644
index 000000000000..bdd6ee4d5f2f
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/dac/ad5770r.txt
@@ -0,0 +1,86 @@
+Analog Devices AD5770R DAC device driver
+
+Required properties for the AD5770R:
+ - compatible: Must be "adi,ad5770r"
+ - reg: SPI chip select number for the device
+ - spi-max-frequency: Max SPI frequency to use (< 10000000, as per
+ Documentation/devicetree/bindings/spi/spi-bus.txt)
+ - child nodes: Each child node represents one channel and has
+ the following required properties:
+ * num: This represents the channel num
+ * adi,range-microamp: Output range of the channel
+ The following ranges are supported:
+ * Channel 0:
+ * <0 300000> 0 mA to 300 mA
+ * <(-60000) 0> -60 to 0 mA
+ * <(-60000) 300000> -60 to 300 mA
+ * Channel 1:
+ * <0 140000> 0 to 140 mA
+ * <0 250000> 0 to 250 mA
+ * Channel 2:
+ * <0 55000> 0 to 55 mA
+ * <0 150000> 0 to 150 mA
+ * Channel 3 to Channel 5:
+ * <0 45000> 0 to 45 mA
+ * <0 100000> 0 to 100 mA
+
+Optional properties:
+
+- vref: Specify the voltage of the external reference used.
+ Available reference options are: 1.25 V or 2.5 V. If no
+ external reference declared then the device will use the
+ internal reference of 1.25 V.
+
+- reset-gpios: GPIO spec for the RESET pin. If specified, it will be
+ asserted during driver probe.
+
+AD5770R Example:
+
+ ad5770r@0 {
+ compatible = "ad5770r";
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+ vref-supply = <&vref>;
+
+ reset-gpios = <&gpio 22 0>;
+
+ channel@0 {
+ num = <0>;
+ adi,range-microamp = <0 300000>;
+ };
+
+ channel@1 {
+ num = <1>;
+ adi,range-microamp = <0 140000>;
+ };
+
+ channel@2 {
+ num = <2>;
+ adi,range-microamp = <0 55000>;
+ };
+
+ channel@3 {
+ num = <3>;
+ adi,range-microamp = <0 45000>;
+ };
+
+ channel@4 {
+ num = <4>;
+ adi,range-microamp = <0 45000>;
+ };
+
+ channel@5 {
+ num = <5>;
+ adi,range-microamp = <0 45000>;
+ };
+ };
+
+External reference example:
+
+ vref: fixedregulator@0 {
+ compatible = "regulator-fixed";
+ regulator-name = "fixed-supply";
+ regulator-min-microvolt = <1250000>;
+ regulator-max-microvolt = <1250000>;
+ };
+
diff --git a/MAINTAINERS b/MAINTAINERS
index 6f7721d1634c..9c2626079592 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -756,6 +756,13 @@ M: Michael Hanselmann <linux-kernel@...smi.ch>
S: Supported
F: drivers/macintosh/ams/
+ANALOG DEVICES INC AD5770R DRIVER
+M: Mircea Caprioru <mircea.caprioru@...log.com>
+L: linux-iio@...r.kernel.org
+W: http://ez.analog.com/community/linux-device-drivers
+S: Supported
+F: Documentation/devicetree/bindings/iio/dac/ad5770r.txt
+
ANALOG DEVICES INC AD9389B DRIVER
M: Hans Verkuil <hans.verkuil@...co.com>
L: linux-media@...r.kernel.org
--
2.17.1
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