[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>
This commit is contained in:
Roy Zang 2007-06-19 15:19:18 +08:00 committed by Kumar Gala
parent 8d038e0433
commit 3b824f8519

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@ -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