dt-bindings:iio:frequency:adi,adf4350: txt to yaml format conversion.

This is a large but fairly simple binding.
It may well be possible to constrain some of the properties more than
currently done, but that would involve diving into datasheets for the
supported parts.  Hence for this initial conversion just use the
information that was in the txt file.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Michael Hennerich <michael.hennerich@analog.com>
Link: https://lore.kernel.org/r/20201031184854.745828-46-jic23@kernel.org

Documentation/devicetree/bindings/iio/frequency/adf4350.txt

-Analog Devices ADF4350/ADF4351 device driver
-
-Required properties:
-	- compatible: Should be one of
-		* "adi,adf4350": When using the ADF4350 device
-		* "adi,adf4351": When using the ADF4351 device
-	- reg: SPI chip select numbert for the device
-	- spi-max-frequency: Max SPI frequency to use (< 20000000)
-	- clocks: From common clock binding. Clock is phandle to clock for
-		ADF435x Reference Clock (CLKIN).
-
-Optional properties:
-	- gpios:	 GPIO Lock detect - If set with a valid phandle and GPIO number,
-			pll lock state is tested upon read.
-	- adi,channel-spacing: Channel spacing in Hz (influences MODULUS).
-	- adi,power-up-frequency:	If set in Hz the PLL tunes to
-			the desired frequency on probe.
-	- adi,reference-div-factor: If set the driver skips dynamic calculation
-			and uses this default value instead.
-	- adi,reference-doubler-enable: Enables reference doubler.
-	- adi,reference-div2-enable: Enables reference divider.
-	- adi,phase-detector-polarity-positive-enable: Enables positive phase
-			detector polarity. Default = negative.
-	- adi,lock-detect-precision-6ns-enable: Enables 6ns lock detect precision.
-			Default = 10ns.
-	- adi,lock-detect-function-integer-n-enable: Enables lock detect
-			for integer-N mode. Default = factional-N mode.
-	- adi,charge-pump-current: Charge pump current in mA.
-			Default = 2500mA.
-	- adi,muxout-select: On chip multiplexer output selection.
-			Valid values for the multiplexer output are:
-			0: Three-State Output (default)
-			1: DVDD
-			2: DGND
-			3: R-Counter output
-			4: N-Divider output
-			5: Analog lock detect
-			6: Digital lock detect
-	- adi,low-spur-mode-enable: Enables low spur mode.
-			Default = Low noise mode.
-	- adi,cycle-slip-reduction-enable: Enables cycle slip reduction.
-	- adi,charge-cancellation-enable: Enabled charge pump
-			charge cancellation for integer-N modes.
-	- adi,anti-backlash-3ns-enable: Enables 3ns antibacklash pulse width
-			 for integer-N modes.
-	- adi,band-select-clock-mode-high-enable: Enables faster band
-			selection logic.
-	- adi,12bit-clk-divider: Clock divider value used when
-			adi,12bit-clkdiv-mode != 0
-	- adi,clk-divider-mode:
-			Valid values for the clkdiv mode are:
-			0: Clock divider off (default)
-			1: Fast lock enable
-			2: Phase resync enable
-	- adi,aux-output-enable: Enables auxiliary RF output.
-	- adi,aux-output-fundamental-enable: Selects fundamental VCO output on
-			the auxiliary RF output. Default = Output of RF dividers.
-	- adi,mute-till-lock-enable: Enables Mute-Till-Lock-Detect function.
-	- adi,output-power: Output power selection.
-			Valid values for the power mode are:
-			0: -4dBm (default)
-			1: -1dBm
-			2: +2dBm
-			3: +5dBm
-	- adi,aux-output-power: Auxiliary output power selection.
-			Valid values for the power mode are:
-			0: -4dBm (default)
-			1: -1dBm
-			2: +2dBm
-			3: +5dBm
-
-
-Example:
-		lo_pll0_rx_adf4351: adf4351-rx-lpc@4 {
-			compatible = "adi,adf4351";
-			reg = <4>;
-			spi-max-frequency = <10000000>;
-			clocks = <&clk0_ad9523 9>;
-			clock-names = "clkin";
-			adi,channel-spacing = <10000>;
-			adi,power-up-frequency = <2400000000>;
-			adi,phase-detector-polarity-positive-enable;
-			adi,charge-pump-current = <2500>;
-			adi,output-power = <3>;
-			adi,mute-till-lock-enable;
-		};

Documentation/devicetree/bindings/iio/frequency/adi,adf4350.yaml

+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/frequency/adi,adf4350.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices ADF4350/ADF4351 wideband synthesizer
+
+maintainers:
+  - Michael Hennerich <michael.hennerich@analog.com>
+
+properties:
+  compatible:
+    enum:
+      - adi,adf4350
+      - adi,adf4351
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 20000000
+
+  clocks:
+    maxItems: 1
+    description: Clock to provide CLKIN reference clock signal.
+
+  clock-names:
+    const: clkin
+
+  gpios:
+    maxItems: 1
+    description: Lock detect GPIO.
+
+  adi,channel-spacing:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Channel spacing in Hz (influences MODULUS).
+
+  adi,power-up-frequency:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      If set the PLL tunes to this frequency (in Hz) on driver probe.
+
+  adi,reference-div-factor:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      If set the driver skips dynamic calculation and uses this default
+      value instead.
+
+  adi,reference-doubler-enable:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: Enables reference doubler.
+
+  adi,reference-div2-enable:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: Enables reference divider.
+
+  adi,phase-detector-polarity-positive-enable:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: Enables positive phase detector polarity. Default negative.
+
+  adi,lock-detect-precision-6ns-enable:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: Enables 6ns lock detect precision. Default = 10ns.
+
+  adi,lock-detect-function-integer-n-enable:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      Enables lock detect for integer-N mode. Default = factional-N mode.
+
+  adi,charge-pump-current:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Charge pump current in mA. Default = 2500mA.
+
+  adi,muxout-select:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 6
+    description: |
+      On chip multiplexer output selection.
+      Valid values for the multiplexer output are:
+      0: Three-State Output (default)
+      1: DVDD
+      2: DGND
+      3: R-Counter output
+      4: N-Divider output
+      5: Analog lock detect
+      6: Digital lock detect
+
+  adi,low-spur-mode-enable:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: Enables low spur mode. Default = Low noise mode.
+
+  adi,cycle-slip-reduction-enable:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: Enables cycle slip reduction.
+
+  adi,charge-cancellation-enable:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      Enabled charge pump charge cancellation for integer-N modes.
+
+  adi,anti-backlash-3ns-enable:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      Enables 3ns antibacklash pulse width for integer-N modes.
+
+  adi,band-select-clock-mode-high-enable:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: Enables faster band selection logic.
+
+  adi,12bit-clk-divider:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Clock divider value used when adi,12bit-clkdiv-mode != 0
+
+  adi,clk-divider-mode:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1, 2]
+    description: |
+      Valid values for the clkdiv mode are:
+      0: Clock divider off (default)
+      1: Fast lock enable
+      2: Phase resync enable
+
+  adi,aux-output-enable:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: Enables auxiliary RF output.
+
+  adi,aux-output-fundamental-enable:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: |
+      Selects fundamental VCO output on the auxiliary RF output.
+      Default = Output of RF dividers.
+
+  adi,mute-till-lock-enable:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description: Enables Mute-Till-Lock-Detect function.
+
+  adi,output-power:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1, 2, 3]
+    description: |
+      Output power selection.
+      Valid values for the power mode are:
+      0: -4dBm (default)
+      1: -1dBm
+      2: +2dBm
+      3: +5dBm
+
+  adi,aux-output-power:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1, 2, 3]
+    description: |
+      Auxiliary output power selection.
+      Valid values for the power mode are:
+      0: -4dBm (default)
+      1: -1dBm
+      2: +2dBm
+      3: +5dBm
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - clocks
+
+examples:
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        pll@4 {
+            compatible = "adi,adf4351";
+            reg = <4>;
+            spi-max-frequency = <10000000>;
+            clocks = <&clk0_ad9523 9>;
+            clock-names = "clkin";
+            adi,channel-spacing = <10000>;
+            adi,power-up-frequency = <2400000000>;
+            adi,phase-detector-polarity-positive-enable;
+            adi,charge-pump-current = <2500>;
+            adi,output-power = <3>;
+            adi,mute-till-lock-enable;
+        };
+    };
+...