[PATCH net-next v4 14/17] dt-bindings: net: pse-pd: Add bindings for PD692x0 PSE controller

[Kory Maincent]

Add the PD692x0 I2C Power Sourcing Equipment controller device tree
bindings documentation.

This patch is sponsored by Dent Project <dentproject@xxxxxxxxxxxxxxxxxxx>.

Signed-off-by: Kory Maincent <kory.maincent@xxxxxxxxxxx>
---

Changes in v2:
- Enhance ports-matrix description.
- Replace additionalProperties by unevaluatedProperties.
- Drop i2c suffix.

Changes in v3:
- Remove ports-matrix parameter.
- Add description of all physical ports and managers.
- Add pse_pis subnode moving to the API of pse-controller binding.
- Remove the MAINTAINERS section for this driver as I will be maintaining
  all pse-pd subsystem.
---
 .../bindings/net/pse-pd/microchip,pd692x0.yaml     | 157 +++++++++++++++++++++
 1 file changed, 157 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/pse-pd/microchip,pd692x0.yaml b/Documentation/devicetree/bindings/net/pse-pd/microchip,pd692x0.yaml
new file mode 100644
index 000000000000..57ba5365157c
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/pse-pd/microchip,pd692x0.yaml
@@ -0,0 +1,157 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/pse-pd/microchip,pd692x0.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip PD692x0 Power Sourcing Equipment controller
+
+maintainers:
+  - Kory Maincent <kory.maincent@xxxxxxxxxxx>
+
+allOf:
+  - $ref: pse-controller.yaml#
+
+properties:
+  compatible:
+    enum:
+      - microchip,pd69200
+      - microchip,pd69210
+      - microchip,pd69220
+
+  reg:
+    maxItems: 1
+
+  managers:
+    $ref: "#/$defs/managers"
+    description:
+      List of the PD69208T4/PD69204T4/PD69208M PSE managers. Each manager
+      have 4 or 8 physical ports according to the chip version. No need to
+      specify the SPI chip select as it is automatically detected by the
+      PD692x0 PSE controller. The PSE managers have to be described from
+      the lowest chip select to the greatest one, which is the detection
+      behavior of the PD692x0 PSE controller. The PD692x0 support up to
+      12 PSE managers which can expose up to 96 physical ports. All
+      physical ports available on a manager have to be described in the
+      incremental order even if they are not used.
+
+required:
+  - compatible
+  - reg
+  - pse_pis
+
+$defs:
+  manager:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      reg:
+        maxItems: 1
+
+    patternProperties:
+      '^port@[0-7]$':
+        type: object
+        required:
+          - reg
+
+    required:
+      - reg
+
+  managers:
+    type: object
+
+    properties:
+      "#address-cells":
+        const: 1
+
+      "#size-cells":
+        const: 0
+
+    patternProperties:
+      "^manager@0[0-9]|1[0-2]$":
+        $ref: "#/$defs/manager"
+
+    required:
+      - "#address-cells"
+      - "#size-cells"
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      ethernet-pse@3c {
+        compatible = "microchip,pd69200";
+        reg = <0x3c>;
+
+        managers {
+          #address-cells = <1>;
+          #size-cells = <0>;
+
+          manager@0 {
+            reg = <0>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            phys0: port@0 {
+              reg = <0>;
+            };
+
+            phys1: port@1 {
+              reg = <1>;
+            };
+
+            phys2: port@2 {
+              reg = <2>;
+            };
+
+            phys3: port@3 {
+              reg = <3>;
+            };
+          };
+
+          manager@1 {
+            reg = <1>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            phys4: port@0 {
+              reg = <0>;
+            };
+
+            phys5: port@1 {
+              reg = <1>;
+            };
+
+            phys6: port@2 {
+              reg = <2>;
+            };
+
+            phys7: port@3 {
+              reg = <3>;
+            };
+          };
+        };
+
+        pse_pis {
+          #address-cells = <1>;
+          #size-cells = <0>;
+
+          pse_pi0: pse_pi@0 {
+            reg = <0>;
+            #pse-cells = <0>;
+            pairset-names = "alternative-a", "alternative-b";
+            pairsets = <&phys0>, <&phys1>;
+          };
+          pse_pi1: pse_pi@1 {
+            reg = <1>;
+            #pse-cells = <0>;
+            pairset-names = "alternative-a";
+            pairsets = <&phys2>;
+          };
+        };
+      };
+    };

-- 
2.25.1