[PATCH v3 2/3] dt-bindings: iio: amplifiers: Add docs for HMC425A Step Attenuator

From: Beniamin Bia
Date: Wed Jan 29 2020 - 03:43:55 EST


From: Michael Hennerich <michael.hennerich@xxxxxxxxxx>

Document support for Analog Devices MC425A Step Attenuator.

Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
Signed-off-by: Beniamin Bia <beniamin.bia@xxxxxxxxxx>
---
Changes in v3:
-dual license
-vcc-supply simplified
-gpio node removed

.../bindings/iio/amplifiers/adi,hmc425a.yaml | 48 +++++++++++++++++++
1 file changed, 48 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/amplifiers/adi,hmc425a.yaml

diff --git a/Documentation/devicetree/bindings/iio/amplifiers/adi,hmc425a.yaml b/Documentation/devicetree/bindings/iio/amplifiers/adi,hmc425a.yaml
new file mode 100644
index 000000000000..d800639c14a5
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/amplifiers/adi,hmc425a.yaml
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/amplifiers/adi,hmc425a.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HMC425A 6-bit Digital Step Attenuator
+
+maintainers:
+- Michael Hennerich <michael.hennerich@xxxxxxxxxx>
+- Beniamin Bia <beniamin.bia@xxxxxxxxxx>
+
+description: |
+ Digital Step Attenuator IIO device with gpio interface.
+ HMC425A 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz
+ https://www.analog.com/media/en/technical-documentation/data-sheets/hmc425A.pdf
+
+properties:
+ compatible:
+ enum:
+ - adi,hmc425a
+
+ vcc-supply: true
+
+ ctrl-gpios:
+ description:
+ Must contain an array of 6 GPIO specifiers, referring to the GPIO pins
+ connected to the control pins V1-V6.
+ maxItems: 6
+
+required:
+ - compatible
+ - ctrl-gpios
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ gpio_hmc425a: hmc425a {
+ compatible = "adi,hmc425a";
+ ctrl-gpios = <&gpio 40 GPIO_ACTIVE_HIGH>,
+ <&gpio 39 GPIO_ACTIVE_HIGH>,
+ <&gpio 38 GPIO_ACTIVE_HIGH>,
+ <&gpio 37 GPIO_ACTIVE_HIGH>,
+ <&gpio 36 GPIO_ACTIVE_HIGH>,
+ <&gpio 35 GPIO_ACTIVE_HIGH>;
+ vcc-supply = <&foo>;
+ };
+...
--
2.17.1