linux/arch/powerpc
Scott Wood 15f8c604a7 [POWERPC] cpm: Describe multi-user ram in its own device node.
The way the current CPM binding describes available multi-user (a.k.a.
dual-ported) RAM doesn't work well when there are multiple free regions,
and it doesn't work at all if the region doesn't begin at the start of
the muram area (as the hardware needs to be programmed with offsets into
this area).  The latter situation can happen with SMC UARTs on CPM2, as its
parameter RAM is relocatable, u-boot puts it at zero, and the kernel doesn't
support moving it.

It is now described with a muram node, similar to QE.  The current CPM
binding is sufficiently recent (i.e. never appeared in an official release)
that compatibility with existing device trees is not an issue.

The code supporting the new binding is shared between cpm1 and cpm2, rather
than remain separated.  QE should be able to use this code as well, once
minor fixes are made to its device trees.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2007-10-04 15:47:05 -05:00
..
boot [POWERPC] cpm: Describe multi-user ram in its own device node. 2007-10-04 15:47:05 -05:00
configs [POWERPC] mpc82xx: Add pq2fads board support. 2007-10-04 11:02:47 -05:00
kernel [POWERPC] Cleaned up whitespace in head_fsl_booke.S 2007-10-04 11:03:06 -05:00
lib [POWERPC] Limit range of __init_ref_ok somewhat 2007-10-03 11:48:44 +10:00
math-emu [POWERPC] ppc math-emu needs -fno-builtin-fabs for math.c and fabs.c 2006-09-26 15:24:35 +10:00
mm [POWERPC] 8xx: Set initial memory limit. 2007-10-03 20:36:36 -05:00
oprofile Remove fs.h from mm.h 2007-07-29 17:09:29 -07:00
platforms [POWERPC] bootwrapper: adds cuboot for MPC7448HPC2 platform 2007-10-04 11:02:50 -05:00
sysdev [POWERPC] cpm: Describe multi-user ram in its own device node. 2007-10-04 15:47:05 -05:00
xmon [POWERPC] fix showing xmon help 2007-07-22 21:30:58 +10:00
.gitignore [POWERPC] Add files build to .gitignore 2006-12-04 20:41:29 +11:00
Kconfig [POWERPC] 8xx: Move softemu8xx.c from arch/ppc 2007-10-04 11:02:54 -05:00
Kconfig.debug [POWERPC] cpm: Describe multi-user ram in its own device node. 2007-10-04 15:47:05 -05:00
Makefile [POWERPC] Select proper defconfig for crosscompiles 2007-10-03 12:02:44 +10:00