new file mode 100644
@@ -0,0 +1,113 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/fsl,gianfar-mdio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale Gianfar (TSEC) MDIO Device
+
+description:
+ This binding describes the MDIO is a bus to which the PHY devices are
+ connected. For each device that exists on this bus, a child node should be
+ created.
+
+ As of this writing, every TSEC is associated with an internal Ten-Bit
+ Interface (TBI) PHY. This PHY is accessed through the local MDIO bus. These
+ buses are defined similarly to the mdio buses, except they are compatible
+ with "fsl,gianfar-tbi". The TBI PHYs underneath them are similar to normal
+ PHYs, but the reg property is considered instructive, rather than
+ descriptive. The reg property should be chosen so it doesn't interfere with
+ other PHYs on the bus.
+
+maintainers:
+ - J. Neuschäfer <j.ne@posteo.net>
+
+# This is needed to distinguish gianfar.yaml and gianfar-mdio.yaml, because
+# both use compatible = "gianfar" (with different device_type values)
+select:
+ oneOf:
+ - properties:
+ compatible:
+ contains:
+ const: gianfar
+ device_type:
+ const: mdio
+ required:
+ - device_type
+
+ - properties:
+ compatible:
+ contains:
+ enum:
+ - fsl,gianfar-tbi
+ - fsl,gianfar-mdio
+ - fsl,etsec2-tbi
+ - fsl,etsec2-mdio
+ - fsl,ucc-mdio
+ - ucc_geth_phy
+
+ required:
+ - compatible
+
+properties:
+ compatible:
+ enum:
+ - fsl,gianfar-tbi
+ - fsl,gianfar-mdio
+ - fsl,etsec2-tbi
+ - fsl,etsec2-mdio
+ - fsl,ucc-mdio
+ - gianfar
+ - ucc_geth_phy
+
+ reg:
+ minItems: 1
+ items:
+ - description:
+ Offset and length of the register set for the device
+
+ - description:
+ Optionally, the offset and length of the TBIPA register (TBI PHY
+ address register). If TBIPA register is not specified, the driver
+ will attempt to infer it from the register set specified (your
+ mileage may vary).
+
+ device_type:
+ const: mdio
+
+required:
+ - reg
+ - "#address-cells"
+ - "#size-cells"
+
+allOf:
+ - $ref: mdio.yaml#
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: ucc_geth_phy
+ then:
+ required:
+ - device_type
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ soc {
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ mdio@24520 {
+ reg = <0x24520 0x20>;
+ compatible = "fsl,gianfar-mdio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ethernet-phy@0 {
+ reg = <0>;
+ };
+ };
+ };
@@ -1,47 +1,10 @@
* MDIO IO device
-The MDIO is a bus to which the PHY devices are connected. For each
-device that exists on this bus, a child node should be created. See
-the definition of the PHY node in booting-without-of.txt for an example
-of how to define a PHY.
-
-Required properties:
- - reg : Offset and length of the register set for the device, and optionally
- the offset and length of the TBIPA register (TBI PHY address
- register). If TBIPA register is not specified, the driver will
- attempt to infer it from the register set specified (your mileage may
- vary).
- - compatible : Should define the compatible device type for the
- mdio. Currently supported strings/devices are:
- - "fsl,gianfar-tbi"
- - "fsl,gianfar-mdio"
- - "fsl,etsec2-tbi"
- - "fsl,etsec2-mdio"
- - "fsl,ucc-mdio"
- - "fsl,fman-mdio"
- When device_type is "mdio", the following strings are also considered:
- - "gianfar"
- - "ucc_geth_phy"
-
-Example:
-
- mdio@24520 {
- reg = <24520 20>;
- compatible = "fsl,gianfar-mdio";
-
- ethernet-phy@0 {
- ......
- };
- };
+Refer to Documentation/devicetree/bindings/net/fsl,gianfar-mdio.yaml
* TBI Internal MDIO bus
-As of this writing, every tsec is associated with an internal TBI PHY.
-This PHY is accessed through the local MDIO bus. These buses are defined
-similarly to the mdio buses, except they are compatible with "fsl,gianfar-tbi".
-The TBI PHYs underneath them are similar to normal PHYs, but the reg property
-is considered instructive, rather than descriptive. The reg property should
-be chosen so it doesn't interfere with other PHYs on the bus.
+Refer to Documentation/devicetree/bindings/net/fsl,gianfar-mdio.yaml
* Gianfar-compatible ethernet nodes