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| -rw-r--r-- | Documentation/powerpc/booting-without-of.txt | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt index c169299716b1..06141cb200fa 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 |