[PATCH v1 1/2] dt:bindings:iio:frequency: Add ADMV4420 doc

[Cristian Pop <cristian.pop@analog.com>]

Add device tree bindings for the ADMV4420 K band downconverter.

Signed-off-by: Cristian Pop <cristian.pop@analog.com>
---
 .../bindings/iio/frequency/adi,admv4420.yaml  | 100 ++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/frequency/adi,admv4420.yaml

diff --git a/Documentation/devicetree/bindings/iio/frequency/adi,admv4420.yaml b/Documentation/devicetree/bindings/iio/frequency/adi,admv4420.yaml
new file mode 100644
index 000000000000..69f1b4a41c5c
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/frequency/adi,admv4420.yaml
@@ -0,0 +1,100 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/frequency/adi,admv4420.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ADMV4420 K Band Downconverter
+
+maintainers:
+- Cristian Pop <cristian.pop@analog.com>
+
+description: |
+    The ADMV4420 is a highly integrated, double balanced, active
+    mixer with an integrated fractional-N synthesizer, ideally suited
+    for next generation K band satellite communications
+
+properties:
+  compatible:
+    enum:
+      - adi,admv4420
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 1000000
+
+  adi,ref_single_ended:
+    description: Reference clock type.
+    type: boolean
+
+  adi,ref_freq_hz:
+    description: Reference clock frequency.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  adi,ref_doubler_en:
+    description: Reference multiplied by 2.
+    type: boolean
+
+  adi,ref_divide_by_2_en:
+    description: Reference divided by 2.
+    type: boolean
+
+  adi,ref_divider:
+    description: Reference divider value.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  adi,N_counter_int_val:
+    description: N counted int val.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  adi,N_counter_frac_val:
+    description: N counted frac val.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  adi,N_counter_mod_val:
+    description: N counted mod val.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  adi,mux_sel:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1, 4, 5, 8]
+    description: |
+      Multiplexer output allows access to various internal signals:
+      0: Output Logic Low
+      1: Digital Lock Detect
+      4: RDiv-by-2 to Mux Out, Frequency = REFIN/(2 x R)
+      5: NDiv-by-2 to Mux Out, Frequency = VCO/(2 x N)
+      8: Output Logic High.
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    spi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      admv4420@0 {
+        compatible = "adi,admv4420";
+        reg = <0>;
+        spi-max-frequency = <1000000>;
+
+        /* reference block config */
+        adi,ref_freq_hz = <50000000>;
+        adi,ref_single_ended = <0>;
+        adi,ref_divider = <1>;
+
+        /* N counter config*/
+        adi,N_counter_int_val = <0xA7>;
+        adi,N_counter_frac_val = <0x02>;
+        adi,N_counter_mod_val = <0x04>;
+
+        adi,mux_sel = <1>;
+      };
+    };
+...
-- 
2.17.1