linux-kernel - [PATCH v3 3/5] dt-bindings: net: Add HPE GXP UMAC

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Message-Id: <20230816215220.114118-4-nick.hawkins@hpe.com>
Date:   Wed, 16 Aug 2023 16:52:18 -0500
From:   nick.hawkins@....com
To:     christophe.jaillet@...adoo.fr, simon.horman@...igine.com,
        andrew@...n.ch, verdun@....com, nick.hawkins@....com,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v3 3/5] dt-bindings: net: Add HPE GXP UMAC

From: Nick Hawkins <nick.hawkins@....com>

Provide access to the register regions and interrupt for Universal
MAC(UMAC). The driver under the hpe,gxp-umac binding will provide an
interface for sending and receiving networking data from both of the
UMACs on the system.

Signed-off-by: Nick Hawkins <nick.hawkins@....com>

---

v3:
 *Remove MDIO references
 *Modify description for use-ncsi
v2:
 *Move mac-addresses into ports
 *Remove | where not needed
---
 .../devicetree/bindings/net/hpe,gxp-umac.yaml | 97 +++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/hpe,gxp-umac.yaml

diff --git a/Documentation/devicetree/bindings/net/hpe,gxp-umac.yaml b/Documentation/devicetree/bindings/net/hpe,gxp-umac.yaml
new file mode 100644
index 000000000000..d3f72694c814
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/hpe,gxp-umac.yaml
@@ -0,0 +1,97 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/hpe,gxp-umac.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HPE GXP Unified MAC Controller
+
+maintainers:
+  - Nick Hawkins <nick.hawkins@....com>
+
+description:
+  HPE GXP 802.3 10/100/1000T Ethernet Unifed MAC controller.
+  Device node of the controller has following properties.
+
+properties:
+  compatible:
+    const: hpe,gxp-umac
+
+  use-ncsi:
+    type: boolean
+    description:
+      Indicates if the device should use NCSI (Network Controlled
+      Sideband Interface). Only one of the two MACs can support
+      NCSI and it requires there to be a physical connection on
+      the board to be present. This property indicates that
+      physical connection is present and should be used.
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  ethernet-ports:
+    type: object
+    additionalProperties: false
+    description: Ethernet ports to PHY
+
+    properties:
+      "#address-cells":
+        const: 1
+
+      "#size-cells":
+        const: 0
+
+    patternProperties:
+      "^port@[0-1]$":
+        type: object
+        additionalProperties: false
+        description: Port to PHY
+
+        properties:
+          reg:
+            minimum: 0
+            maximum: 1
+
+          phy-handle:
+            maxItems: 1
+
+          mac-address: true
+
+        required:
+          - reg
+          - phy-handle
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - ethernet-ports
+
+examples:
+  - |
+    ethernet@...0 {
+      compatible = "hpe,gxp-umac";
+      reg = <0x4000 0x80>;
+      interrupts = <22>;
+      ethernet-ports {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        port@0 {
+          reg = <0>;
+          phy-handle = <&int_phy0>;
+          mac-address = [00 00 00 00 00 00];
+        };
+
+        port@1 {
+          reg = <1>;
+          phy-handle = <&ext_phy1>;
+          mac-address = [00 00 00 00 00 00];
+        };
+      };
+    };
-- 
2.17.1