[net-next,v12,02/13] dt-bindings: net: Document support for Airoha AN8855 Switch Virtual MDIO

Commit Message

Christian Marangi March 9, 2025, 5:26 p.m. UTC

Document support for Airoha AN8855 Virtual MDIO Passtrough. This is needed
as AN8855 require special handling as the same address on the MDIO bus is
shared for both Switch and PHY and special handling for the page
configuration is needed to switch accessing to Switch address space
or PHY.

Signed-off-by: Christian Marangi <[e-mail]>
Reviewed-by: Rob Herring (Arm) <[e-mail]>
---
 .../bindings/net/airoha,an8855-mdio.yaml      | 56 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 2 files changed, 57 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/airoha,an8855-mdio.yaml

Patch

diff --git a/Documentation/devicetree/bindings/net/airoha,an8855-mdio.yaml b/Documentation/devicetree/bindings/net/airoha,an8855-mdio.yaml
new file mode 100644
index 000000000000..3078277bf478
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/airoha,an8855-mdio.yaml
@@ -0,0 +1,56 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/airoha,an8855-mdio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Airoha AN8855 MDIO Passtrough
+
+maintainers:
+  - Christian Marangi <[e-mail]>
+
+description:
+  Airoha AN8855 Virtual MDIO Passtrough. This is needed as AN8855
+  require special handling as the same address on the MDIO bus is
+  shared for both Switch and PHY and special handling for the page
+  configuration is needed to switch accessing to Switch address space
+  or PHY.
+
+$ref: /schemas/net/mdio.yaml#
+
+properties:
+  compatible:
+    const: airoha,an8855-mdio
+
+required:
+  - compatible
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    mdio {
+        compatible = "airoha,an8855-mdio";
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        internal_phy1: phy@1 {
+            reg = <1>;
+        };
+
+        internal_phy2: phy@2 {
+            reg = <2>;
+        };
+
+        internal_phy3: phy@3 {
+            reg = <3>;
+        };
+
+        internal_phy4: phy@4 {
+            reg = <4>;
+        };
+
+        internal_phy5: phy@5 {
+            reg = <5>;
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 576fa7eb7b55..1e8055b5e162 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -725,6 +725,7 @@  L:	[e-mail] (moderated for non-subscribers)
 L:	[e-mail] (moderated for non-subscribers)
 L:	[e-mail]
 S:	Maintained
+F:	Documentation/devicetree/bindings/net/airoha,an8855-mdio.yaml
 F:	Documentation/devicetree/bindings/nvmem/airoha,an8855-efuse.yaml
 
 AIROHA ETHERNET DRIVER