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Commit 3b824f85 authored by Roy Zang's avatar Roy Zang Committed by Kumar Gala
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[POWERPC] Document the global utilities node define and example 



Document the global utilities node define and example.

Signed-off-by: default avatarRoy Zang <tie-fei.zang@freescale.com>
Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
parent 8d038e04

Documentation/powerpc/booting-without-of.txt

+28 −0
Original line number Diff line number Diff line
@@ -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