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Date:   Tue, 15 Oct 2019 23:52:23 -0300
From:   Marcelo Schmitt <marcelo.schmitt1@gmail.com>
To:     jic23@kernel.org
Cc:     dragos.bogdan@analog.com, alexandru.ardelean@analog.com,
        linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org,
        devicetree@vger.kernel.org, kernel-usp@googlegroups.com
Subject: [PATCH v2 2/2] dt-bindings: iio: adc: Add DT docs for AD7292
Message-ID: <20191016025220.td3xb7oxlfkznxl6@smtp.gmail.com>
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Add a device tree binding doc for AD7292 monitor and control system.

Signed-off-by: Marcelo Schmitt <marcelo.schmitt1@gmail.com>
---
 .../bindings/iio/adc/adi,ad7292.yaml          | 107 ++++++++++++++++++
 MAINTAINERS                                   |   1 +
 2 files changed, 108 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml
new file mode 100644
index 000000000000..40028332d9e2
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml
@@ -0,0 +1,107 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/adi,ad7292.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD7292 10-Bit Monitor and Control System
+
+maintainers:
+  - Marcelo Schmitt <marcelo.schmitt1@gmail.com>
+
+description: |
+  Analog Devices AD7292 10-Bit Monitor and Control System with ADC, DACs,
+  Temperature Sensor, and GPIOs
+
+  Specifications about the part can be found at:
+    https://www.analog.com/media/en/technical-documentation/data-sheets/ad7292.pdf
+
+properties:
+  compatible:
+    enum:
+      - adi,ad7292
+
+  reg:
+    maxItems: 1
+
+  vref-supply:
+    description: |
+      The regulator supply for ADC and DAC reference voltage.
+    maxItems: 1
+
+  spi-cpha:
+    description: |
+      See Documentation/devicetree/bindings/spi/spi-controller.yaml
+    maxItems: 1
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+
+patternProperties:
+  "^channel@[0-7]$":
+    type: object
+    description: |
+      Represents the external channels which are connected to the ADC.
+      See Documentation/devicetree/bindings/iio/adc/adc.txt.
+
+    properties:
+      reg:
+        description: |
+          The channel number. It can have up to 8 channels numbered from 0 to 7.
+        maxItems: 1
+
+      diff-channels:
+        description: see Documentation/devicetree/bindings/iio/adc/adc.txt
+        maxItems: 1
+
+    required:
+      - reg
+
+examples:
+  - |
+    spi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      ad7292: ad7292@0 {
+        compatible = "adi,ad7292";
+        reg = <0>;
+
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        spi-max-frequency = <25000000>;
+        vref-supply = <&adc_vref>;
+        spi-cpha;
+
+        channel@0 {
+          reg = <0>;
+          diff-channels = <0 1>;
+        };
+        channel@2 {
+          reg = <2>;
+        };
+        channel@3 {
+          reg = <3>;
+        };
+        channel@4 {
+          reg = <4>;
+        };
+        channel@5 {
+          reg = <5>;
+        };
+        channel@6 {
+          reg = <6>;
+        };
+        channel@7 {
+          reg = <7>;
+        };
+      };
+    }
diff --git a/MAINTAINERS b/MAINTAINERS
index e78317a5f4f1..5941cfc0d6f7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -819,6 +819,7 @@ L:	linux-iio@vger.kernel.org
 W:	http://ez.analog.com/community/linux-device-drivers
 S:	Supported
 F:	drivers/iio/adc/ad7292.c
+F:	Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml
 
 ANALOG DEVICES INC AD7606 DRIVER
 M:	Stefan Popa <stefan.popa@analog.com>
-- 
2.23.0