linux/arch
Dmitry Krivoschekov 86260f9873 [ARM] 4824/1: pxa: clear RDH bit after any reset
According to PXA300/310 and PXA320 Developer manuals,
the ASCR[RDH] "bit needs to be cleared as part of the software
initialization coming out of any reset and coming out of D3".
The latter requirement is addressed by commit
"c4d1fb627ff3072", as for the former (coming out of any reset),
the kernel relies on boot loaders and assumes that RDH bit
is cleared there. Though, not all bootloaders follow the rule
so we have to clear the bit in kernel.

We clear the RDH bit in pxa3xx_init() function since
it is always invoked after any reset. We also preserve D1S, D2S
and D3S bits from being cleared in case we invoke pxa3xx_init()
function not from normal hardware reset (e.g. kexec scenario),
so these bits can be properly referenced later.

Signed-off-by: Dmitry Krivoschekov <dmitry.krivoschekov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-09 22:43:14 +00:00
..
alpha Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
arm [ARM] 4824/1: pxa: clear RDH bit after any reset 2008-02-09 22:43:14 +00:00
avr32 Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
blackfin [Blackfin] arch: fix build fails only include header files when enabled 2008-02-09 01:49:23 +08:00
cris Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
frv Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
h8300 Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
ia64 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 2008-02-08 15:40:28 -08:00
m32r m32r: build fix of arch/m32r/kernel/smpboot.c 2008-02-07 08:42:32 -08:00
m68k m68k: correct setting of struct user.u_ar0 2008-02-07 14:15:55 -08:00
m68knommu Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
mips Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
mn10300 mn10300: add platform MTD support for the ASB2303 board 2008-02-08 09:22:30 -08:00
parisc Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
powerpc Fix compilation of powerpc asm-offsets.c with old gcc 2008-02-07 14:54:45 -08:00
ppc scheduled OSS driver removal 2008-02-06 10:41:02 -08:00
s390 Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
sh Use BOOTMEM_EXCLUSIVE for kdump 2008-02-07 08:42:25 -08:00
sparc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6 2008-02-07 10:21:26 -08:00
sparc64 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6 2008-02-07 10:21:26 -08:00
um uml: make mconsole_stack namespace-aware 2008-02-05 09:44:32 -08:00
v850 Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
x86 SLUB: Alternate fast paths using cmpxchg_local 2008-02-07 17:47:41 -08:00
xtensa calibrate_delay() must be __cpuinit 2008-02-06 10:41:08 -08:00
.gitignore arch: Ignore arch/i386 and arch/x86_64 2008-01-19 21:29:39 -08:00
Kconfig Move Kconfig.instrumentation to arch/Kconfig and init/Kconfig 2008-02-03 08:58:08 +01:00