netdev - [PATCH 1/2] dt-bindings: net: add marvell smi2usb bindings

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Message-Id: <20200318165232.29680-1-tobias@waldekranz.com>
Date:   Wed, 18 Mar 2020 17:52:31 +0100
From:   Tobias Waldekranz <tobias@...dekranz.com>
To:     netdev@...r.kernel.org
Subject: [PATCH 1/2] dt-bindings: net: add marvell smi2usb bindings

Describe how the smi2usb controller can optionally use device tree
bindings to reference attached devices such as switches.

Signed-off-by: Tobias Waldekranz <tobias@...dekranz.com>
---
 .../bindings/net/marvell,smi2usb.yaml         | 65 +++++++++++++++++++
 MAINTAINERS                                   |  6 ++
 2 files changed, 71 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/marvell,smi2usb.yaml

diff --git a/Documentation/devicetree/bindings/net/marvell,smi2usb.yaml b/Documentation/devicetree/bindings/net/marvell,smi2usb.yaml
new file mode 100644
index 000000000000..498a19bf7326
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/marvell,smi2usb.yaml
@@ -0,0 +1,65 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/marvell,smi2usb.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Marvell SMI2USB MDIO Controller
+
+maintainers:
+  - Tobias Waldekranz <tobias@...dekranz.com>
+
+description: |+
+  This controller is mounted on development boards for Marvell's Link Street
+  family of Ethernet switches. It allows you to configure the switch's registers
+  using the standard MDIO interface.
+
+  Since the device is connected over USB, there is no strict requirement of
+  having a device tree representation of the device. But in order to use it with
+  the mv88e6xxx driver, you need a device tree node in which to place the switch
+  definition.
+
+allOf:
+  - $ref: "mdio.yaml#"
+
+properties:
+  compatible:
+    const: usb1286,1fa4
+  reg:
+    maxItems: 1
+    description: The USB port number on the host controller
+
+required:
+  - compatible
+  - reg
+  - "#address-cells"
+  - "#size-cells"
+
+examples:
+  - |
+    /* USB host controller */
+    &usb1 {
+            smi2usb: mdio@1 {
+                    compatible = "usb1286,1fa4";
+                    reg = <1>;
+                    #address-cells = <1>;
+                    #size-cells = <0>;
+            };
+    };
+
+    /* MV88E6390X devboard */
+    &smi2usb {
+            switch@0 {
+                    compatible = "marvell,mv88e6190";
+                    status = "ok";
+                    reg = <0x0>;
+
+                    ports {
+                            /* Port definitions */
+                    };
+
+                    mdio {
+                            /* PHY definitions */
+                    };
+            };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 5dbee41045bc..83bb7ce3e23e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -10096,6 +10096,12 @@ S:	Maintained
 F:	drivers/mtd/nand/raw/marvell_nand.c
 F:	Documentation/devicetree/bindings/mtd/marvell-nand.txt
 
+MARVELL SMI2USB MDIO CONTROLLER DRIVER
+M:	Tobias Waldekranz <tobias@...dekranz.com>
+L:	netdev@...r.kernel.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/net/marvell,smi2usb.yaml
+
 MARVELL SOC MMC/SD/SDIO CONTROLLER DRIVER
 M:	Nicolas Pitre <nico@...xnic.net>
 S:	Odd Fixes
-- 
2.17.1