[PATCH 1/4 v2] powerpc: document max-speed and interface-type properties

[Kim Phillips]

Since ucc_geth is being migrated to use the phylib, the existing
(undocumented) 'interface' property is being deprecated in favour
of unconjoined variations 'max-speed' and 'interface-type'.

interface-type is now maintained one-to-one with definitions
in include/linux/phy.h.  If not specified, "mii" is assumed.

max-speed is available for users to override the interface-derived
speed, e.g. rgmii at 100Mbit/s.

Signed-off-by: Kim Phillips <kim.phillips at freescale.com>
---
moved to recommended section (from required), removed sgmii, added rgmii-id.

please consider for 2.6.22

 Documentation/powerpc/booting-without-of.txt |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index 88cdb59..cb8c6fb 100644
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -1562,6 +1562,10 @@ platforms are moved over to use the flattened-device-tree model.
      network device.  This is used by the bootwrapper to interpret
      MAC addresses passed by the firmware when no information other
      than indices is available to associate an address with a device.
+   - interface-type : a string naming the controller/PHY interface type,
+     i.e., "mii" (default), "rmii", "gmii", "rgmii", "rgmii-id", "tbi", or "rtbi".
+   - max-speed : The maximum speed supported by the controller (in Mbit/s)
+     this is used if the user wants to override the interface-derived speed.
 
    Example:
 	ucc at 2000 {
@@ -1573,6 +1577,7 @@ platforms are moved over to use the flattened-device-tree model.
 		interrupts = <a0 0>;
 		interrupt-parent = <700>;
 		mac-address = [ 00 04 9f 00 23 23 ];
+		interface-type = "rgmii";
 		rx-clock = "none";
 		tx-clock = "clk9";
 		phy-handle = <212000>;
-- 
1.5.0.1