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From: Kim Seer Paller <kimseer.paller@analog.com>
To: <linux-iio@vger.kernel.org>, <devicetree@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>
CC: Jonathan Cameron <jic23@kernel.org>, Lars-Peter Clausen <lars@metafoo.de>,
        Michael Hennerich <Michael.Hennerich@analog.com>,
        Rob Herring
	<robh+dt@kernel.org>,
        Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>, Crt
 Mori <cmo@melexis.com>,
        Linus Walleij <linus.walleij@linaro.org>,
        Bartosz
 Golaszewski <brgl@bgdev.pl>,
        =?UTF-8?q?Nuno=20S=C3=A1?=
	<noname.nuno@gmail.com>,
        Kim Seer Paller <kimseer.paller@analog.com>
Subject: [PATCH v8 1/2] dt-bindings: iio: frequency: add admfm2000
Date: Tue, 23 Jan 2024 16:10:58 +0800
Message-ID: <20240123081059.5746-1-kimseer.paller@analog.com>
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Dual microwave down converter module with input RF and LO frequency
ranges from 0.5 to 32 GHz and an output IF frequency range from 0.1 to
8 GHz. It consists of a LNA, mixer, IF filter, DSA, and IF amplifier
for each down conversion path.

Signed-off-by: Kim Seer Paller <kimseer.paller@analog.com>
---
V7 -> V8: Added adequate description for mixer mode property. Modified description
          for switch gpio property.
V6 -> V7: Changed RF path mode property to boolean.
V5 -> V6: Moved array of switch and attenuation GPIOs to the channel node.
          Changed pin coords with friendly names. Removed Reviewed-by tag.
V4 -> V5: Added Reviewed-by tag.
V3 -> V4: Updated the description of the properties with multiple entries and
          defined the order.
V2 -> V3: Adjusted indentation to resolve wrong indentation warning. 
          Changed node name to converter. Updated the descriptions to clarify
          the properties.
V1 -> V2: Removed '|' after description. Specified the pins connected to
          the GPIOs. Added additionalProperties: false. Changed node name to gpio.
          Aligned < syntax with the previous syntax in the examples.

 .../bindings/iio/frequency/adi,admfm2000.yaml | 127 ++++++++++++++++++
 MAINTAINERS                                   |   7 +
 2 files changed, 134 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/frequency/adi,admfm2000.yaml

diff --git a/Documentation/devicetree/bindings/iio/frequency/adi,admfm2000.yaml b/Documentation/devicetree/bindings/iio/frequency/adi,admfm2000.yaml
new file mode 100644
index 000000000000..2bcf4bbc12e4
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/frequency/adi,admfm2000.yaml
@@ -0,0 +1,127 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright 2024 Analog Devices Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/frequency/adi,admfm2000.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ADMFM2000 Dual Microwave Down Converter
+
+maintainers:
+  - Kim Seer Paller <kimseer.paller@analog.com>
+
+description:
+  Dual microwave down converter module with input RF and LO frequency ranges
+  from 0.5 to 32 GHz and an output IF frequency range from 0.1 to 8 GHz.
+  It consists of a LNA, mixer, IF filter, DSA, and IF amplifier for each down
+  conversion path.
+
+properties:
+  compatible:
+    enum:
+      - adi,admfm2000
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+patternProperties:
+  "^channel@[0-1]$":
+    type: object
+    description: Represents a channel of the device.
+
+    additionalProperties: false
+
+    properties:
+      reg:
+        description:
+          The channel number.
+        minimum: 0
+        maximum: 1
+
+      adi,mixer-mode:
+        description:
+          Enable mixer mode for the channel. It downconverts RF between 5 GHz
+          and 32 GHz to IF between 0.5 GHz and 8 GHz. If not present, the channel
+          is in direct IF mode which bypasses the mixer and downconverts RF
+          between 2 GHz and 8 GHz to IF between 0.5 GHz and 8 GHz.
+        type: boolean
+
+      switch-gpios:
+        description: |
+          GPIOs to select the RF path for the channel. The same state of CTRL-A
+          and CTRL-B GPIOs is not permitted.
+          CTRL-A   CTRL-B    CH1 Status        CH2 Status
+          1        0         Direct IF mode    Mixer mode
+          0        1         Mixer mode        Direct IF mode
+
+        items:
+          - description: CTRL-A GPIO
+          - description: CTRL-B GPIO
+
+      attenuation-gpios:
+        description: |
+          Choice of attenuation:
+          DSA-V4  DSA-V3  DSA-V2  DSA-V1  DSA-V0
+          1       1       1       1       1        0 dB
+          1       1       1       1       0        -1 dB
+          1       1       1       0       1        -2 dB
+          1       1       0       1       1        -4 dB
+          1       0       1       1       1        -8 dB
+          0       1       1       1       1        -16 dB
+          0       0       0       0       0        -31 dB
+
+        items:
+          - description: DSA-V0 GPIO
+          - description: DSA-V1 GPIO
+          - description: DSA-V2 GPIO
+          - description: DSA-V3 GPIO
+          - description: DSA-V4 GPIO
+
+    required:
+      - reg
+      - switch-gpios
+      - attenuation-gpios
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    converter {
+      compatible = "adi,admfm2000";
+
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      channel@0 {
+        reg = <0>;
+        switch-gpios = <&gpio 1 GPIO_ACTIVE_LOW>,
+                       <&gpio 2 GPIO_ACTIVE_HIGH>;
+
+        attenuation-gpios = <&gpio 17 GPIO_ACTIVE_LOW>,
+                            <&gpio 22 GPIO_ACTIVE_LOW>,
+                            <&gpio 23 GPIO_ACTIVE_LOW>,
+                            <&gpio 24 GPIO_ACTIVE_LOW>,
+                            <&gpio 25 GPIO_ACTIVE_LOW>;
+      };
+
+      channel@1 {
+        reg = <1>;
+        adi,mixer-mode;
+        switch-gpios = <&gpio 3 GPIO_ACTIVE_LOW>,
+                       <&gpio 4 GPIO_ACTIVE_HIGH>;
+
+        attenuation-gpios = <&gpio 0 GPIO_ACTIVE_LOW>,
+                            <&gpio 5 GPIO_ACTIVE_LOW>,
+                            <&gpio 6 GPIO_ACTIVE_LOW>,
+                            <&gpio 16 GPIO_ACTIVE_LOW>,
+                            <&gpio 26 GPIO_ACTIVE_LOW>;
+      };
+    };
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 8d1052fa6a69..1f7cd2e848de 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1267,6 +1267,13 @@ W:	https://ez.analog.com/linux-software-drivers
 F:	Documentation/devicetree/bindings/hwmon/adi,adm1177.yaml
 F:	drivers/hwmon/adm1177.c
 
+ANALOG DEVICES INC ADMFM2000 DRIVER
+M:	Kim Seer Paller <kimseer.paller@analog.com>
+L:	linux-iio@vger.kernel.org
+S:	Supported
+W:	https://ez.analog.com/linux-software-drivers
+F:	Documentation/devicetree/bindings/iio/frequency/adi,admfm2000.yaml
+
 ANALOG DEVICES INC ADMV1013 DRIVER
 M:	Antoniu Miclaus <antoniu.miclaus@analog.com>
 L:	linux-iio@vger.kernel.org

base-commit: 7ed2632ec7d72e926b9e8bcc9ad1bb0cd37274bf
-- 
2.34.1