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authorRoy Zang <tie-fei.zang@freescale.com>2007-06-19 15:19:18 +0800
committerKumar Gala <galak@kernel.crashing.org>2007-07-03 02:01:49 -0500
commit3b824f85191c9ccc2614474543118e88543d5ba2 (patch)
tree4156f2ef785de7ded079cf418508c42815684de6 /Documentation/powerpc/booting-without-of.txt
parent8d038e0433e3164e460c2daeca1ec6947a08f81a (diff)
[POWERPC] Document the global utilities node define and example
Document the global utilities node define and example. Signed-off-by: Roy Zang <tie-fei.zang@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'Documentation/powerpc/booting-without-of.txt')
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diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index c169299716b..06141cb200f 100644
--- 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
+ k) Global Utilities Block
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";
};
+ 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