Commit graph

9 commits

Author SHA1 Message Date
Mike Frysinger
e1ffaee728 Blackfin: disable syscontrol code for now
Looks like the initcode updates fell out of order during my merges.  The
patch that really fixes up this code is part of power-on overhaul and so
is too large for merging at this point.  Instead, we can disable the code
as no currently in-tree board depends on it.  The next merge window will
fix things up properly.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-02-21 19:23:20 -05:00
Mike Frysinger
f790ef6ff1 Blackfin: dynamically update UART speed when initializing
Previously, booting over the UART required the baud rate to be known ahead
of time.  Using a bit of tricky simple math, we can calculate the new board
rate based on the old divisors.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
2009-02-05 21:25:35 -05:00
Mike Frysinger
97f265f14f Blackfin: add support for fast SPI reads with Boot ROM
Newer Blackfin boot roms support using the fast SPI read command rather than
just the slow one.  If the functionality is available, then use it.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-02-05 21:25:35 -05:00
Mike Frysinger
67619982bf Blackfin: check for reserved settings in DDR MMRs
Some bits of the DDR MMRs should not be set.  If they do, bad things may
happen (like random failures or hardware destruction).

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-02-05 21:25:35 -05:00
Mike Frysinger
622a8dc095 Blackfin: set default voltage levels for BF538/BF539 parts
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-02-05 21:25:34 -05:00
Mike Frysinger
09dc6b0bbd Blackfin: use on-chip syscontrol() rom function when available
Newer Blackfin's have an on-chip rom with a syscontrol() function that needs
to be used to properly program the memory and voltage settings as it will
include (possibly critical) factory tested bias values.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-02-05 21:25:28 -05:00
Mike Frysinger
ee1d2001ea Blackfin: dont check baud if it wont actually get used
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-02-02 12:24:31 -05:00
Mike Frysinger
4f6a313240 Blackfin: respect CONFIG_CLKIN_HALF
As pointed out by Ivan Koryakovskiy, the initialization code was not
actually respecting the CONFIG_CLKIN_HALF option when configuring the
PLL_CTL register.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-01-28 13:26:14 -05:00
Mike Frysinger
9171fc8172 Blackfin: unify cpu and boot modes
All of the duplicated code for Blackfin processors and boot modes have been
unified.  After all, the core is the same for all processors, just the
peripheral set differs (which gets handled in the drivers).

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2008-03-30 15:50:19 -04:00