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authorEmmanuel Vadot <manu@FreeBSD.org>2017-07-09 13:12:48 +0000
committerEmmanuel Vadot <manu@FreeBSD.org>2017-07-09 13:12:48 +0000
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+Common MDIO bus properties.
+
+These are generic properties that can apply to any MDIO bus.
+
+Optional properties:
+- reset-gpios: One GPIO that control the RESET lines of all PHYs on that MDIO
+ bus.
+- reset-delay-us: RESET pulse width in microseconds.
+
+A list of child nodes, one per device on the bus is expected. These
+should follow the generic phy.txt, or a device specific binding document.
+
+The 'reset-delay-us' indicates the RESET signal pulse width in microseconds and
+applies to all PHY devices. It must therefore be appropriately determined based
+on all PHY requirements (maximum value of all per-PHY RESET pulse widths).
+
+Example :
+This example shows these optional properties, plus other properties
+required for the TI Davinci MDIO driver.
+
+ davinci_mdio: ethernet@0x5c030000 {
+ compatible = "ti,davinci_mdio";
+ reg = <0x5c030000 0x1000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ reset-gpios = <&gpio2 5 GPIO_ACTIVE_LOW>;
+ reset-delay-us = <2>;
+
+ ethphy0: ethernet-phy@1 {
+ reg = <1>;
+ };
+
+ ethphy1: ethernet-phy@3 {
+ reg = <3>;
+ };
+ };