We need to make sure the data written to the nand flash controller makes
it there before we start polling its status register. Otherwise, we may
get stale data and return before the controller is actually ready.
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Scott Wood <scottwood@freescale.com>
Blackfin SPI driver was not driving the SPI chip-select high before
putting the chip-select signals into tri-state mode. This is probably
something that slipped by unnoticed in most designs. If the signals are
put directly into a tri-state mode, then the board is relying on the
pull-up resistors to pull up the chip-select before the next transaction.
Most of the time this is fine, except when you have two transactions that
follow each other very closely, such as the flash erase and read status
register commands. In this case I was seeing a 500ns separation between
the transactions. In my setup, with a 10kOhm pull-up, it would meet
timing spec about half the time and resulted in intermittent errors. (A
stronger pull up would fix this, but our design is targeted for low power
consumption and a 3.3kOhm @ 3.3v is 3.3mW of needless power consumption.)
I modified the spi_cs_deactivate() function in bfin_spi.c to drive the
chip-selects high before putting them into tri-state. For me, this
resulted in a rise time of 5ns instead of the previous rise time of about
1us, and fully satisfied the timing spec of the chip.
Signed-off-by: Todor I Mollov <tmollov@ucsd.edu>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
A new Overo expansion board uses GPIO 14, 21, 22 and 23 for LED's and
switches. This patch changes the pinmux configuration for those pins.
They were previously set up for unused MMC3_DAT4-7.
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
imx31_phycore_eet is a variant of the imx31_phycore board with a few
extensions, which justifies a separate entry in the MAINTAINERS list,
whereas normally all entries sharing a single configuration file and a
board/ directory have only one entry in MAINTAINERS.
Reported-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
The previous code waited 1000us before checking i2c
status. Measurement shows i2c is usually ready in
under 50us. Change the polling interval to 15us,
loop 6,667 times to keep the polling timeout constant
at 100ms.
Fixes this compile error:
board.c: In function 'do_switch_ecc':
board.c:339: error: 'cmd_tbl_t' has no member named 'help'
make[1]: *** [board.o] Error 1
make[1]: Leaving directory `/db/psp_git/users/a0756819/u-boot/cpu/arm_cortexa8/omap3'
make: *** [cpu/arm_cortexa8/omap3/libomap3.a] Error 2
This is due to the fact that current command uses long
help for the usage print even if the CONFIG_SYS_LONGHELP
is not enabled. (Thanks Jean-Christophe for explanation).
Signed-off-by: Sanjeev Premi <premi@ti.com>
Move machine specific code to smdk6400.
Some board use OneNAND instead of NAND.
Some register MP0_CS_CFG[5:0] are controled by both h/w and s/w.
So it's better to use macro instead of hard-coded value.
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
In addition to the changes for CONFIG_ENV_IS_IN_FLASH as done in
commit afcbce07, we also need to do the same for
CONFIG_ENV_IS_IN_EEPROM and CONFIG_ENV_IS_IN_NVRAM.
Signed-off-by: Wolfgang Denk <wd@denx.de>
Without this, u-boot can crash or print garbage if the original link
address no longer points to a valid string.
Signed-off-by: Scott Wood <scottwood@freescale.com>
On platforms with multiple NOR chips, currently only the first one
can be selected using the "ubi part" command. This patch fixes this
problem by using different names for the NOR "mtd devices".
It also changes the name of the NOR MTD device from "cfi-mtd" to
"norX" (X indexing the device numer) to better match the mtdparts
defaults.
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Andreas Huber <andreas.huber@keymile.com>
Now UBIFS is supported by u-boot. If we ever decide to change the
media format, then people will have to upgrade their u-boots to
mount new format images. However, very often it is possible to
preserve R/O forward-compatibility, even though the write
forward-compatibility is not preserved.
This patch introduces a new super-block field which stores the
R/O compatibility version.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Acked-by: Adrian Hunter <Adrian.Hunter@nokia.com>
Signed-off-by: Stefan Roese <sr@denx.de>
On Thu, Mar 19, 2009 at 01:30:36PM +0100, Stefan Roese wrote:
> Currently the mtdparts commands are included in the jffs2 command support.
> This doesn't make sense anymore since other commands (e.g. UBI) use this
> infrastructure as well now. This patch separates the mtdparts commands from
> the jffs2 commands making it possible to only select mtdparts when no JFFS2
> support is needed.
... and to make it useful for NAND chips as well, we should also remove now
unrelated CONFIG_JFFS2_NAND. Note that struct part_info etc is in
jffs2/load_kernel.h which is a bit misleading filename for that purpose,
but that can be fixed later (tm).
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Rather than sticking Blackfin-specific stuff into the eeprom example, use
an indirect macro so that any board can override it with their own magic
sauce in their board config file.
Also fix some spurious semi-colons in defines while I'm at it ...
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
CC: Ben Warren <biggerbadderben@gmail.com>
Update the rm9200 reset sequence to try executing a board-specific reset
function and move specific board reset to board.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
introduce serial_exit for this purpose. Use it only when the rm9200
serial driver is active
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
The AT91RM9200-EK Evaluation Board supports the AT91RM9200
ARM9-based 32-bit RISC microcontroller and enables real-time code development
and evaluation.
Here is the chip page on Atmel website:
http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3507
with
- NOR (cfi driver)
- DataFlash
- USB OHCI
- Net
- I2C (hard)
Signed-off-by: Ulf Samuelsson <ulf@atmel.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
