[POWERPC] Document the global utilities node define and example

[linux-2.6] / Documentation / powerpc / booting-without-of.txt

diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index c169299716b1bb148aa3d3c537bc1ea4cf637a51..06141cb200fa0734df549ebed4f6536aeba4409f 100644 (file)
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -51,6 +51,7 @@ Table of Contents
       h) Board Control and Status (BCSR)
       i) Freescale QUICC Engine module (QE)
       g) Flash chip nodes
       h) Board Control and Status (BCSR)
       i) Freescale QUICC Engine module (QE)
       g) Flash chip nodes

+      k) Global Utilities Block

 
   VII - Specifying interrupt information for devices
     1) interrupts property
 
   VII - Specifying interrupt information for devices
     1) interrupts property


@@ -1790,6 +1791,33 @@ platforms are moved over to use the flattened-device-tree model.
                partition-names = "fs\0firmware";
        };
 
                partition-names = "fs\0firmware";
        };
 

+   k) Global Utilities Block
+
+   The global utilities block controls power management, I/O device
+   enabling, power-on-reset configuration monitoring, general-purpose
+   I/O signal configuration, alternate function selection for multiplexed
+   signals, and clock control.
+
+   Required properties:
+
+    - compatible : Should define the compatible device type for
+      global-utilities.
+    - reg : Offset and length of the register set for the device.
+
+  Recommended properties:
+
+    - fsl,has-rstcr : Indicates that the global utilities register set
+      contains a functioning "reset control register" (i.e. the board
+      is wired to reset upon setting the HRESET_REQ bit in this register).
+
+    Example:
+
+       global-utilities@e0000 {        /* global utilities block */
+               compatible = "fsl,mpc8548-guts";
+               reg = <e0000 1000>;
+               fsl,has-rstcr;
+       };
+

    More devices will be defined as this spec matures.
 
 VII - Specifying interrupt information for devices
    More devices will be defined as this spec matures.
 
 VII - Specifying interrupt information for devices