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Date: Thu, 7 Jun 2018 16:11:05 +0300
From: Stefan Popa <stefan.popa@...log.com>
To: <jic23@...nel.org>, <Michael.Hennerich@...log.com>,
<lars@...afoo.de>
CC: <knaack.h@....de>, <pmeerw@...erw.net>, <robh+dt@...nel.org>,
<mark.rutland@....com>, <mchehab@...nel.org>,
<davem@...emloft.net>, <gregkh@...uxfoundation.org>,
<akpm@...ux-foundation.org>, <linus.walleij@...aro.org>,
<rdunlap@...radead.org>, <devicetree@...r.kernel.org>,
<linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<stefan.popa@...log.com>
Subject: [PATCH v2 2/2] dt-bindings: iio: dac: Add docs for AD5758 DAC
Signed-off-by: Stefan Popa <stefan.popa@...log.com>
---
Changes in v2:
- Nothing changed, just to follow the patch set version.
.../devicetree/bindings/iio/dac/ad5758.txt | 84 ++++++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 85 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/dac/ad5758.txt
diff --git a/Documentation/devicetree/bindings/iio/dac/ad5758.txt b/Documentation/devicetree/bindings/iio/dac/ad5758.txt
new file mode 100644
index 0000000..75fff6c
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/dac/ad5758.txt
@@ -0,0 +1,84 @@
+Analog Devices AD5758 DAC device driver
+
+Required properties for the AD5758:
+ - compatible: Must be "adi,ad5758"
+ - reg: SPI chip select number for the device
+ - spi-max-frequency: Max SPI frequency to use (< 50000000)
+ - spi-cpha: is the only mode that is supported
+
+Optional properties:
+
+ - adi,dc-dc-mode: Mode of operation of the dc-to-dc converter
+ The following values are currently supported:
+ * 0: DC-to-DC converter powered off
+ * 1: DPC current mode
+ * 2: DPC voltage mode
+ * 3: PPC current mode
+
+ - adi,dc-dc-ilim: The dc-to-dc converter current limit
+ The following values are currently supported [mA]:
+ * 150
+ * 200
+ * 250
+ * 300
+ * 350
+ * 400
+
+ - adi,slew: Array of slewrate settings should contain 3 fields:
+ 1: Should be either 0 or 1 in order to enable or disable slewrate.
+ 2: Slew rate clock:
+ Valid values for the slew rate update frequency [Hz]:
+ * 240000
+ * 200000
+ * 150000
+ * 128000
+ * 64000
+ * 32000
+ * 16000
+ * 8000
+ * 4000
+ * 2000
+ * 1000
+ * 512
+ * 256
+ * 128
+ * 64
+ * 16
+ 3: Slew rate step:
+ Defines by how much the output value changes at each update.
+ Valid values for the step size LSBs:
+ * 4
+ * 12
+ * 64
+ * 120
+ * 256
+ * 500
+ * 1820
+ * 2048
+
+ - adi,range: The output range
+ The following values are currently supported:
+ * 0: 0 V to 5 V voltage range
+ * 1: 0 V to 10 V voltage range
+ * 2: ±5 V voltage range
+ * 3: ±10 V voltage range
+ * 8: 0 mA to 20 mA current range
+ * 9: 0 mA to 24 mA current range
+ * 10: 4 mA to 20 mA current range
+ * 11: ±20 mA current range
+ * 12: ±24 mA current range
+ * 13: −1 mA to +22 mA current range
+
+AD5758 Example:
+
+ ad5758@0 {
+ compatible = "adi,ad5758";
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+ spi-cpha;
+
+ adi,dc-dc-mode = <2>;
+ adi,dc-dc-ilim = <200>;
+ adi,slew = <1 200000 12>;
+ adi,range = <1>;
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 1993779..f640146 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -808,6 +808,7 @@ L: linux-iio@...r.kernel.org
W: http://ez.analog.com/community/linux-device-drivers
S: Supported
F: drivers/iio/dac/ad5758.c
+F: Documentation/devicetree/bindings/iio/dac/ad5758.txt
ANALOG DEVICES INC AD9389B DRIVER
M: Hans Verkuil <hans.verkuil@...co.com>
--
2.7.4
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