From f21a5f7215420c513d2bb2d21fdf24c9a550922e Mon Sep 17 00:00:00 2001
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Date: Sun, 27 Jun 2021 17:32:44 +0100
Subject: [PATCH] dt-bindings: iio: dac: microchip,mcp4922: Add missing binding
 document
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Simple binding for this family of microchip DACs.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Michael Welling <mwelling@ieee.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210627163244.1090296-16-jic23@kernel.org
---
 .../bindings/iio/dac/microchip,mcp4922.yaml        | 46 ++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/dac/microchip,mcp4922.yaml

diff --git a/Documentation/devicetree/bindings/iio/dac/microchip,mcp4922.yaml b/Documentation/devicetree/bindings/iio/dac/microchip,mcp4922.yaml
new file mode 100644
index 0000000..12a14b3
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/dac/microchip,mcp4922.yaml
@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/dac/microchip,mcp4922.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip MCP4902, MCP4912 and MPC4922 dual output SPI DACs
+
+maintainers:
+  - Jonathan Cameron <jic23@kernel.org>
+  - Michael Welling <mwelling@ieee.org>
+
+properties:
+  compatible:
+    enum:
+      - microchip,mcp4902
+      - microchip,mcp4912
+      - microchip,mcp4922
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency: true
+
+  vref-supply: true
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - vref-supply
+
+examples:
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        dac@0 {
+            compatible = "microchip,mcp4912";
+            reg = <0>;
+            vref-supply = <&dac_vref>;
+        };
+    };
+...
-- 
2.7.4