[PATCH net-next v4 16/17] dt-bindings: net: pse-pd: Add bindings for TPS23881 PSE controller

[Kory Maincent <kory.maincent@bootlin.com>]

Add the TPS23881 I2C Power Sourcing Equipment controller device tree
bindings documentation.

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

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

---
Change in v3:
- New patch.

Change in v4:
- Rename the file to ti,tps23881 as it support only this version of the PSE
  controller.
---
 .../bindings/net/pse-pd/ti,tps23881.yaml           | 111 +++++++++++++++++++++
 1 file changed, 111 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/pse-pd/ti,tps23881.yaml b/Documentation/devicetree/bindings/net/pse-pd/ti,tps23881.yaml
new file mode 100644
index 000000000000..353418ea3519
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/pse-pd/ti,tps23881.yaml
@@ -0,0 +1,111 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/pse-pd/ti,tps23881.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI TPS23881 Power Sourcing Equipment controller
+
+maintainers:
+  - Kory Maincent <kory.maincent@bootlin.com>
+
+allOf:
+  - $ref: pse-controller.yaml#
+
+properties:
+  compatible:
+    enum:
+      - ti,tps23881
+
+  reg:
+    maxItems: 1
+
+  '#pse-cells':
+    const: 1
+
+  channels:
+    description: each set of 8 ports can be assigned to one physical
+      channels or two for PoE4. This parameter describes the configuration
+      of the ports conversion matrix that establishes relationship between
+      the logical ports and the physical channels.
+    type: object
+
+    patternProperties:
+      '^channel@[0-7]$':
+        type: object
+        required:
+          - reg
+
+unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      ethernet-pse@20 {
+        compatible = "ti,tps23881";
+        reg = <0x20>;
+
+        channels {
+          #address-cells = <1>;
+          #size-cells = <0>;
+
+          phys0: channel@0 {
+            reg = <0>;
+          };
+
+          phys1: channel@1 {
+            reg = <1>;
+          };
+
+          phys2: channel@2 {
+            reg = <2>;
+          };
+
+          phys3: channel@3 {
+            reg = <3>;
+          };
+
+          phys4: channel@4 {
+            reg = <4>;
+          };
+
+          phys5: channel@5 {
+            reg = <5>;
+          };
+
+          phys6: channel@6 {
+            reg = <6>;
+          };
+
+          phys7: channel@7 {
+            reg = <7>;
+          };
+        };
+
+        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