netdev - [RFC PATCH v2 linux-next 10/14] dt-bindings: net: dsa: sja1105: add SJA1110 bindings

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Message-Id: <20210526135535.2515123-11-vladimir.oltean@nxp.com>
Date:   Wed, 26 May 2021 16:55:31 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Rob Herring <robh@...nel.org>
Subject: [RFC PATCH v2 linux-next 10/14] dt-bindings: net: dsa: sja1105: add SJA1110 bindings

There are 4 variations of the SJA1110 switch which have a different set
of MII protocols supported per port. Document the compatible strings.

Also, the SJA1110 optionally supports 2 internal MDIO buses for 2
different types of Ethernet PHYs. Document a container node called
"mdios" which has 2 subnodes "mdio@0" and "mdio@1", identifiable via
compatible string, under which the driver finds the internal PHYs.

Cc: Rob Herring <robh@...nel.org>
Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
Changes in v2:
Patch is new.

 .../bindings/net/dsa/nxp,sja1105.yaml         | 43 +++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml b/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml
index c1f18849a54a..640da65b0f59 100644
--- a/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml
@@ -28,10 +28,53 @@ properties:
           - nxp,sja1105q
           - nxp,sja1105r
           - nxp,sja1105s
+          - nxp,sja1110a
+          - nxp,sja1110b
+          - nxp,sja1110c
+          - nxp,sja1110d
 
   reg:
     maxItems: 1
 
+  # Optional container node for the 2 internal MDIO buses of the SJA1110
+  # (one for the internal 100base-T1 PHYs and the other for the single
+  # 100base-TX PHY). The "reg" property does not have physical significance.
+  # The PHY addresses to port correspondence is as follows: for 100base-T1,
+  # port 5 has PHY 1, port 6 has PHY 2 etc, while for 100base-TX, port 1 has
+  # PHY 1.
+  mdios:
+    type: object
+
+    properties:
+      '#address-cells':
+        const: 1
+      '#size-cells':
+        const: 0
+
+    patternProperties:
+      "^mdio@[0-1]$":
+        type: object
+
+        allOf:
+          - $ref: "http://devicetree.org/schemas/net/mdio.yaml#"
+
+        properties:
+          compatible:
+            oneOf:
+              - enum:
+                  - nxp,sja1110-base-t1-mdio
+                  - nxp,sja1110-base-tx-mdio
+
+          reg:
+            oneOf:
+              - enum:
+                - 0
+                - 1
+
+        required:
+          - compatible
+          - reg
+
 patternProperties:
   "^(ethernet-)?ports$":
     type: object
-- 
2.25.1