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Currently by running the following test:
=> setenv bootcmd reset
=> save
=> reset
, we observe a hang after approximately 20-30 minutes of stress reboot test.
Investigation of this issue revealed that when a single DDR chip select is used,
the hang does not happen. It only happens when the two chip selects are active.
MX53 reference manual states at "28.6.2 Memory ZQ calibration sequence":
"The controller must keep the memory lines quiet (except for CK) for the ZQ
calibration time as defined in the Jedec (512 cycles for ZQCL after reset, 256
for other ZQCL and 64 for ZQCS)."
According to the SDE_0 and SDE_1 bit descriptions from register ESDCTL_ESDCTL:
"Writing 1 to SDE0 or SDE1 will initiate power up delays as JEDEC defines.
Power up delays are a function of the configured memory type (DDR2/DDR3/LPDDR2)"
So make sure to activate one chip select at time (CS0 first and then CS1 later),
so that the required JEDEC delay is respected for each chip select.
With this change applied the board has gone through three days of reboot stress
test without any hang.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Stefano Babic <sbabic@denx.de>
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Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
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Many boot image configuration files refer to the
appropriate documentation file, but these references
contain typos in the directory and file name. Fix
them. Also fix reference to doc/README.SPL file.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Cc: Prafulla Wadaskar <prafulla@marvell.com>
Cc: Stefano Babic <sbabic@denx.de>
Acked-by: Stefano Babic <sbabic@denx.de>
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The '#' used as comments in the files cause the preprocessor
trouble, so change to /* */.
The mkimage command which uses this preprocessor output
was moved to arch/arm/imx-common/Makefile
.gitignore was updated to ignore .cfgtmp files.
Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
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Currently, board files are setting this field to 0x01
which the manual says is a reserved value. Change to
use the default of 0x02 - 128 cycles.
Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Fabio Estevam <fabio.estevam@freescale.com>
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Updated mx53 ddr3 script in order to align with the latest Freescale version from July 8, 2011:
-change ESDREF[REF_SEL]=01 (for 32KHz), from incorrect setting of 00 (64KHz)
-change DDR3 MR0 write to "setmem /32 0x63fd901c = 0x052080b0" from
"0x092080b0". This changes write recovery from 8 clocks to 6 clocks
(in line with ESDCFG1[tWR])
Signed-off-by: Lily Zhang <r58066@freescale.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
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This patch add initial support for freescale MX53LOCO board.
Network(FEC),SD/MMC,UART have been supported by this patch
Signed-off-by: Jason Liu <jason.hui@linaro.org>
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