linux-kernel - [PATCH net-next v2 1/4] dt-bindings: net: Add aspeed,ast2600-mdio binding

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Date:   Wed, 31 Jul 2019 15:09:56 +0930
From:   Andrew Jeffery <andrew@...id.au>
To:     netdev@...r.kernel.org
Cc:     Andrew Jeffery <andrew@...id.au>, davem@...emloft.net,
        robh+dt@...nel.org, mark.rutland@....com, joel@....id.au,
        andrew@...n.ch, f.fainelli@...il.com, hkallweit1@...il.com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next v2 1/4] dt-bindings: net: Add aspeed,ast2600-mdio binding

The AST2600 splits out the MDIO bus controller from the MAC into its own
IP block and rearranges the register layout. Add a new binding to
describe the new hardware.

Signed-off-by: Andrew Jeffery <andrew@...id.au>

---
v2:
* aspeed: Utilise mdio.yaml
* aspeed: Drop status from example
---
 .../bindings/net/aspeed,ast2600-mdio.yaml     | 45 +++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/aspeed,ast2600-mdio.yaml

diff --git a/Documentation/devicetree/bindings/net/aspeed,ast2600-mdio.yaml b/Documentation/devicetree/bindings/net/aspeed,ast2600-mdio.yaml
new file mode 100644
index 000000000000..71808e78a495
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/aspeed,ast2600-mdio.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/aspeed,ast2600-mdio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ASPEED AST2600 MDIO Controller
+
+maintainers:
+  - Andrew Jeffery <andrew@...id.au>
+
+description: |+
+  The ASPEED AST2600 MDIO controller is the third iteration of ASPEED's MDIO
+  bus register interface, this time also separating out the controller from the
+  MAC.
+
+allOf:
+  - $ref: "mdio.yaml#"
+
+properties:
+  compatible:
+    const: aspeed,ast2600-mdio
+  reg:
+    maxItems: 1
+    description: The register range of the MDIO controller instance
+
+required:
+  - compatible
+  - reg
+  - "#address-cells"
+  - "#size-cells"
+
+examples:
+  - |
+    mdio0: mdio@...50000 {
+            compatible = "aspeed,ast2600-mdio";
+            reg = <0x1e650000 0x8>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            ethphy0: ethernet-phy@0 {
+                    compatible = "ethernet-phy-ieee802.3-c22";
+                    reg = <0>;
+            };
+    };
-- 
2.20.1