u-boot/arch
York Sun c3678b0937 powerpc/mpc85xx: Add workaround for erratum A007212
Erratum A007212 for DDR is about a runaway condition for DDR PLL
oscilliator. Please refer to erratum document for detail.
For this workaround to work, DDR PLL needs to be disabled in RCW.
However, u-boot needs to know the expected PLL ratio. We put the
ratio in a reserved field RCW[18:23]. U-boot will skip this workaround
if DDR PLL ratio is set, or the reserved field is not set.

Workaround for erratum A007212 applies to selected versions of
B4/T4 SoCs. It is safe to apply the workaround to all versions. It
is helpful for upgrading SoC without changing u-boot. In case DDR
PLL is disabled by RCW (part of the erratum workaround), we need this
u-boot workround to bring up DDR clock.

Signed-off-by: York Sun <yorksun@freescale.com>
2014-04-22 17:58:48 -07:00
..
arc kbuild: delete redundant LDSCRIPT definition 2014-03-12 17:04:46 -04:00
arm ARM:tegra20: Remove aes debug prints 2014-04-18 16:14:17 -04:00
avr32 kbuild: fix CROSS_COMPILE settings in config.mk 2014-03-04 12:15:30 -05:00
blackfin blackfin: make name_to_gpio be a weak symbol 2014-04-18 10:42:29 -04:00
m68k kbuild: rename OBJTREE to objtree 2014-03-12 17:04:58 -04:00
microblaze kbuild: delete redundant LDSCRIPT definition 2014-03-12 17:04:46 -04:00
mips usb: create common header virtual root hub descriptors 2014-03-10 18:53:36 +01:00
nds32 kbuild: move asm-offsets.c from SoC directory to arch/$(ARCH)/lib 2014-03-28 15:06:29 -04:00
nios2 kbuild: fix CROSS_COMPILE settings in config.mk 2014-03-04 12:15:30 -05:00
openrisc kbuild: delete redundant LDSCRIPT definition 2014-03-12 17:04:46 -04:00
powerpc powerpc/mpc85xx: Add workaround for erratum A007212 2014-04-22 17:58:48 -07:00
sandbox sandbox: Add options to clean up temporary files 2014-03-17 20:05:49 -06:00
sh sh: fix PFC registers definition for SH772{2, 3, 4} 2014-03-14 14:49:54 +09:00
sparc sparc: consolidate CONFIG_{LEON, LEON2, LEON3} definition 2014-03-21 16:44:10 -04:00
x86 kbuild: move asm-offsets.c from SoC directory to arch/$(ARCH)/lib 2014-03-28 15:06:29 -04:00
.gitignore update include/asm/ gitignore after move 2010-05-07 00:17:30 +02:00