From: Stefan Popa <stefan.popa@analog.com>
To: <jic23@kernel.org>, <robh+dt@kernel.org>, <mark.rutland@arm.com>
Cc: Stefan Popa <stefan.popa@analog.com>,
<Michael.Hennerich@analog.com>, <knaack.h@gmx.de>,
<lars@metafoo.de>, <pmeerw@pmeerw.net>,
<gregkh@linuxfoundation.org>, <linux-kernel@vger.kernel.org>,
<linux-iio@vger.kernel.org>, <devel@driverdev.osuosl.org>
Subject: [PATCH v2 6/6] dt-bindings: iio: adc: Add docs for AD7606 ADC
Date: Mon, 17 Dec 2018 14:23:40 +0200 [thread overview]
Message-ID: <1545049420-16484-7-git-send-email-stefan.popa@analog.com> (raw)
In-Reply-To: <1545049420-16484-1-git-send-email-stefan.popa@analog.com>
Document support for AD7606 Analog to Digital Converter.
Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
.../devicetree/bindings/iio/adc/adi,ad7606.txt | 65 ++++++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 66 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt
diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt
new file mode 100644
index 0000000..d7b6241
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt
@@ -0,0 +1,65 @@
+Analog Devices AD7606 Simultaneous Sampling ADC
+
+Required properties for the AD7606:
+
+- compatible: Must be one of
+ * "adi,ad7605-4"
+ * "adi,ad7606-8"
+ * "adi,ad7606-6"
+ * "adi,ad7606-4"
+- reg: SPI chip select number for the device
+- spi-max-frequency: Max SPI frequency to use
+ see: Documentation/devicetree/bindings/spi/spi-bus.txt
+- spi-cpha: See Documentation/devicetree/bindings/spi/spi-bus.txt
+- avcc-supply: phandle to the Avcc power supply
+- interrupts: IRQ line for the ADC
+ see: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
+- adi,conversion-start-gpios: must be the device tree identifier of the CONVST pin.
+ This logic input is used to initiate conversions on the analog
+ input channels. As the line is active high, it should be marked
+ GPIO_ACTIVE_HIGH.
+
+Optional properties:
+
+- reset-gpios: must be the device tree identifier of the RESET pin. If specified,
+ it will be asserted during driver probe. As the line is active high,
+ it should be marked GPIO_ACTIVE_HIGH.
+- standby-gpios: must be the device tree identifier of the STBY pin. This pin is used
+ to place the AD7606 into one of two power-down modes, Standby mode or
+ Shutdown mode. As the line is active low, it should be marked
+ GPIO_ACTIVE_LOW.
+- adi,first-data-gpios: must be the device tree identifier of the FRSTDATA pin.
+ The FRSTDATA output indicates when the first channel, V1, is
+ being read back on either the parallel, byte or serial interface.
+ As the line is active high, it should be marked GPIO_ACTIVE_HIGH.
+- adi,range-gpios: must be the device tree identifier of the RANGE pin. The polarity on
+ this pin determines the input range of the analog input channels. If
+ this pin is tied to a logic high, the analog input range is ±10V for
+ all channels. If this pin is tied to a logic low, the analog input range
+ is ±5V for all channels. As the line is active high, it should be marked
+ GPIO_ACTIVE_HIGH.
+- adi,oversampling-ratio-gpios: must be the device tree identifier of the over-sampling
+ mode pins. As the line is active high, it should be marked
+ GPIO_ACTIVE_HIGH.
+
+Example:
+
+ adc@0 {
+ compatible = "adi,ad7606-8";
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+ spi-cpol;
+
+ avcc-supply = <&adc_vref>;
+
+ interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
+ interrupt-parent = <&gpio>;
+
+ adi,conversion-start-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
+ reset-gpios = <&gpio 27 GPIO_ACTIVE_HIGH>;
+ adi,first-data-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
+ adi,oversampling-ratio-gpios = <&gpio 18 GPIO_ACTIVE_HIGH
+ &gpio 23 GPIO_ACTIVE_HIGH
+ &gpio 26 GPIO_ACTIVE_HIGH>;
+ standby-gpios = <&gpio 24 GPIO_ACTIVE_LOW>;
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index bc9f816..d039f66 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -860,6 +860,7 @@ L: linux-iio@vger.kernel.org
W: http://ez.analog.com/community/linux-device-drivers
S: Supported
F: drivers/iio/adc/ad7606.c
+F: Documentation/devicetree/bindings/iio/adc/ad7606.txt
ANALOG DEVICES INC AD9389B DRIVER
M: Hans Verkuil <hans.verkuil@cisco.com>
--
2.7.4
next prev parent reply other threads:[~2018-12-17 12:27 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-17 12:23 [PATCH v2 0/6] staging: iio: ad7606: Move out of staging Stefan Popa
2018-12-17 12:23 ` [PATCH v2 1/6] staging: iio: adc: ad7606: Simplify the Kconfing menu Stefan Popa
2018-12-22 17:40 ` Jonathan Cameron
2018-12-17 12:23 ` [PATCH v2 2/6] staging: iio: adc: ad7606: Use SPDX identifier Stefan Popa
2018-12-22 17:47 ` Jonathan Cameron
2018-12-17 12:23 ` [PATCH v2 3/6] staging: iio: adc: ad7606: Add support for threaded irq Stefan Popa
2018-12-22 17:49 ` Jonathan Cameron
2018-12-17 12:23 ` [PATCH v2 4/6] staging: iio: adc: ad7606: Misc style fixes (no functional change) Stefan Popa
2018-12-22 17:50 ` Jonathan Cameron
2018-12-17 12:23 ` [PATCH v2 5/6] staging: iio: adc: ad7606: Move out of staging Stefan Popa
2018-12-22 17:56 ` Jonathan Cameron
2018-12-17 12:23 ` Stefan Popa [this message]
2018-12-22 17:58 ` [PATCH v2 6/6] dt-bindings: iio: adc: Add docs for AD7606 ADC Jonathan Cameron
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