powerpc: Refactor device tree binding

Split device tree binding out of booting-without-of.txt and put them
into their own files per binding.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/Documentation/powerpc/dts-bindings/phy.txt b/Documentation/powerpc/dts-bindings/phy.txt
new file mode 100644
index 000000000000..bb8c742eb8c5
--- /dev/null
+++ b/Documentation/powerpc/dts-bindings/phy.txt
@@ -0,0 +1,25 @@
+PHY nodes
+
+Required properties:
+
+ - device_type : Should be "ethernet-phy"
+ - interrupts : <a b> where a is the interrupt number and b is a
+   field that represents an encoding of the sense and level
+   information for the interrupt.  This should be encoded based on
+   the information in section 2) depending on the type of interrupt
+   controller you have.
+ - interrupt-parent : the phandle for the interrupt controller that
+   services interrupts for this device.
+ - reg : The ID number for the phy, usually a small integer
+ - linux,phandle :  phandle for this node; likely referenced by an
+   ethernet controller node.
+
+Example:
+
+ethernet-phy@0 {
+        linux,phandle = <2452000>
+        interrupt-parent = <40000>;
+        interrupts = <35 1>;
+        reg = <0>;
+        device_type = "ethernet-phy";
+};