linux-kernel - [PATCH net-next 1/2] dt-bindings: net: pse-pd: Add bindings for Si3474 PSE controller

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Message-ID: <259ad93b-9cc2-4b5d-8323-b427417af747@adtran.com>
Date: Mon, 12 May 2025 22:05:49 +0000
From: Piotr Kubik <piotr.kubik@...ran.com>
To: Oleksij Rempel <o.rempel@...gutronix.de>, Kory Maincent
	<kory.maincent@...tlin.com>, Andrew Lunn <andrew+netdev@...n.ch>, "David S.
 Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub
 Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Rob Herring
	<robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
	<conor+dt@...nel.org>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH net-next 1/2] dt-bindings: net: pse-pd: Add bindings for
 Si3474 PSE controller

From: Piotr Kubik <piotr.kubik@...ran.com>

Add the Si3474 I2C Power Sourcing Equipment controller device tree
bindings documentation.

Signed-off-by: Piotr Kubik <piotr.kubik@...ran.com>
---
 .../bindings/net/pse-pd/skyworks,si3474.yaml  | 146 ++++++++++++++++++
 1 file changed, 146 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/pse-pd/skyworks,si3474.yaml

diff --git a/Documentation/devicetree/bindings/net/pse-pd/skyworks,si3474.yaml b/Documentation/devicetree/bindings/net/pse-pd/skyworks,si3474.yaml
new file mode 100644
index 000000000000..646924a3cfb0
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/pse-pd/skyworks,si3474.yaml
@@ -0,0 +1,146 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/pse-pd/skyworks,si3474.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Skyworks Si3474 Power Sourcing Equipment controller
+
+maintainers:
+  - Piotr Kubik <piotr.kubik@...ran.com>
+
+allOf:
+  - $ref: pse-controller.yaml#
+
+properties:
+  compatible:
+    enum:
+      - skyworks,si3474
+
+  reg-names:
+    items:
+      - const: main
+      - const: slave
+
+  reg:
+    maxItems: 2
+
+  channels:
+    description: The Si3474 is a single-chip PoE PSE controller managing
+      8 physical power delivery channels. Internally, it's structured
+      into two logical "Quads".
+      Quad 0 Manages physical channels ('ports' in datasheet) 0, 1, 2, 3
+      Quad 1 Manages physical channels ('ports' in datasheet) 4, 5, 6, 7.
+      This parameter describes the relationship between the logical and
+      the physical power channels.
+
+    type: object
+    additionalProperties: false
+
+    properties:
+      "#address-cells":
+        const: 1
+
+      "#size-cells":
+        const: 0
+
+    patternProperties:
+      '^channel@[0-7]$':
+        type: object
+        additionalProperties: false
+
+        properties:
+          reg:
+            maxItems: 1
+
+        required:
+          - reg
+
+    required:
+      - "#address-cells"
+      - "#size-cells"
+
+required:
+  - compatible
+  - reg
+  - pse-pis
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      ethernet-pse@26 {
+        compatible = "skyworks,si3474";
+        reg-names = "main", "slave";
+        reg = <0x26>, <0x27>;
+
+        channels {
+          #address-cells = <1>;
+          #size-cells = <0>;
+          phys0_0: channel@0 {
+            reg = <0>;
+          };
+          phys0_1: channel@1 {
+            reg = <1>;
+          };
+          phys0_2: channel@2 {
+            reg = <2>;
+          };
+          phys0_3: channel@3 {
+            reg = <3>;
+          };
+          phys0_4: channel@4 {
+            reg = <4>;
+          };
+          phys0_5: channel@5 {
+            reg = <5>;
+          };
+          phys0_6: channel@6 {
+            reg = <6>;
+          };
+          phys0_7: 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_0>, <&phys0_1>;
+            polarity-supported = "MDI-X", "S";
+            vpwr-supply = <&reg_pse>;
+          };
+          pse_pi1: pse-pi@1 {
+            reg = <1>;
+            #pse-cells = <0>;
+            pairset-names = "alternative-a", "alternative-b";
+            pairsets = <&phys0_2>, <&phys0_3>;
+            polarity-supported = "MDI-X", "S";
+            vpwr-supply = <&reg_pse>;
+          };
+          pse_pi2: pse-pi@2 {
+            reg = <2>;
+            #pse-cells = <0>;
+            pairset-names = "alternative-a", "alternative-b";
+            pairsets = <&phys0_4>, <&phys0_5>;
+            polarity-supported = "MDI-X", "S";
+            vpwr-supply = <&reg_pse>;
+          };
+          pse_pi3: pse-pi@3 {
+            reg = <3>;
+            #pse-cells = <0>;
+            pairset-names = "alternative-a", "alternative-b";
+            pairsets = <&phys0_6>, <&phys0_7>;
+            polarity-supported = "MDI-X", "S";
+            vpwr-supply = <&reg_pse>;
+          };
+        };
+      };
+    };
-- 
2.43.0