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Commit 5a928079 authored by Kumar Gala's avatar Kumar Gala
Browse files

powerpc/86xx: Add binding for LAWs and MCM 



The first 4k region of CCSR space is well defined for local access
windows, CCSRBAR, etc.  The second 4k region is well defined as
register for configuring and getting errors for the MPX coherency
module.

Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
parent e1a22897

Documentation/powerpc/dts-bindings/fsl/mcm.txt

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=====================================================================

MPX LAW & Coherency Module Device Tree Binding

Copyright (C) 2009 Freescale Semiconductor Inc.

=====================================================================



Local Access Window (LAW) Node



The LAW node represents the region of CCSR space where local access

windows are configured.  For MCM based devices this is the first 4k

of CCSR space that includes CCSRBAR, ALTCBAR, ALTCAR, BPTR, and some

number of local access windows as specified by fsl,num-laws.



PROPERTIES



  - compatible

      Usage: required

      Value type: <string>

      Definition: Must include "fsl,mcm-law"



  - reg

      Usage: required

      Value type: <prop-encoded-array>

      Definition: A standard property.  The value specifies the

          physical address offset and length of the CCSR space

          registers.



  - fsl,num-laws

      Usage: required

      Value type: <u32>

      Definition: The value specifies the number of local access

          windows for this device.



=====================================================================



MPX Coherency Module Node



The MPX LAW node represents the region of CCSR space where MCM config

and error reporting registers exist, this is the second 4k (0x1000)

of CCSR space.



PROPERTIES



  - compatible

      Usage: required

      Value type: <string>

      Definition: Must include "fsl,CHIP-mcm", "fsl,mcm" where

      CHIP is the processor (mpc8641, mpc8610, etc.)



  - reg

      Usage: required

      Value type: <prop-encoded-array>

      Definition: A standard property.  The value specifies the

          physical address offset and length of the CCSR space

          registers.



   - interrupts

      Usage: required

      Value type: <prop-encoded-array>



   - interrupt-parent

      Usage: required

      Value type: <phandle>



=====================================================================