netdev - [PATCH v5 2/4] dt-bindings: mfd: Add MDIO interface to rtl9301-switch

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Message-ID: <20250131010151.2527688-3-chris.packham@alliedtelesis.co.nz>
Date: Fri, 31 Jan 2025 14:01:49 +1300
From: Chris Packham <chris.packham@...iedtelesis.co.nz>
To: lee@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	andrew+netdev@...n.ch,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	tsbogend@...ha.franken.de,
	hkallweit1@...il.com,
	linux@...linux.org.uk,
	sander@...nheule.net,
	markus.stockhausen@....de
Cc: devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-mips@...r.kernel.org,
	Chris Packham <chris.packham@...iedtelesis.co.nz>
Subject: [PATCH v5 2/4] dt-bindings: mfd: Add MDIO interface to rtl9301-switch

The MDIO controller is part of the switch on the RTL9300 family of
devices. Add a $ref to the mfd binding for these devices.

Signed-off-by: Chris Packham <chris.packham@...iedtelesis.co.nz>
---

Notes:
    This patch is dependent on "dt-bindings: net: Add Realtek MDIO
    controller" which adds the realtek,rtl9301-mdio.yaml binding.
    
    Changes in v5:
    - Note dependency on realtek,rtl9301-mdio.yaml patch
    - Add back reg property to the mdio-controller node.
    Changes in v4:
    - There is a single MDIO controller that has MDIO buses as children
    Changes in v3:
    - None
    Changes in v2:
    - None

 .../bindings/mfd/realtek,rtl9301-switch.yaml  | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/realtek,rtl9301-switch.yaml b/Documentation/devicetree/bindings/mfd/realtek,rtl9301-switch.yaml
index f053303ab1e6..89e10213a4ee 100644
--- a/Documentation/devicetree/bindings/mfd/realtek,rtl9301-switch.yaml
+++ b/Documentation/devicetree/bindings/mfd/realtek,rtl9301-switch.yaml
@@ -28,6 +28,9 @@ properties:
   reg:
     maxItems: 1
 
+  mdio-controller:
+    $ref: /schemas/net/realtek,rtl9301-mdio.yaml#
+
   '#address-cells':
     const: 1
 
@@ -41,6 +44,10 @@ patternProperties:
   'i2c@[0-9a-f]+$':
     $ref: /schemas/i2c/realtek,rtl9301-i2c.yaml#
 
+  'mdio-controller@[0-9a-f]+$':
+    $ref: /schemas/net/realtek,rtl9301-mdio.yaml#
+
+
 required:
   - compatible
   - reg
@@ -110,5 +117,27 @@ examples:
           };
         };
       };
+
+      mdio-controller@...0 {
+        compatible = "realtek,rtl9301-mdio";
+        reg = <0xca00 0x200>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        mdio-bus@0 {
+          reg = <0>;
+          #address-cells = <1>;
+          #size-cells = <0>;
+
+          ethernet-phy@0 {
+            reg = <0>;
+            realtek,port = <1>;
+          };
+          ethernet-phy@1 {
+            reg = <1>;
+            realtek,port = <0>;
+          };
+        };
+      };
     };
 
-- 
2.48.1