u-boot.git/drivers/ddr, branch v2015.10

bitops: introduce BIT() definition

2015-09-11T21:15:32+00:00

introduce BIT() definition, used in at91_udc gadget
driver.

Signed-off-by: Heiko Schocher 
[remove all other occurrences of BIT(x) definition]
Signed-off-by: Andreas Bießmann 
Acked-by: Stefan Roese 
Acked-by: Anatolij Gustschin

ddr: altera: Repair uninited variable

2015-08-23T09:56:19+00:00

Fix the following problem:
drivers/ddr/altera/sequencer.c: In function 'sdram_calibration_full':
drivers/ddr/altera/sequencer.c:1943:25: warning: 'found_failing_read' may be used uninitialized in this function [-Wmaybe-uninitialized]
  if (found_passing_read && found_failing_read)
                         ^
drivers/ddr/altera/sequencer.c:1803:26: note: 'found_failing_read' was declared here
  u32 found_passing_read, found_failing_read, initial_failing_dtap;
                          ^

Signed-off-by: Marek Vasut

ddr: altera: Replace float multiplication with integer one

2015-08-23T09:56:19+00:00

This gem is really really rare, there was an actual float used in
the Altera DDR init code, which pulled in floating point ops from
the libgcc, just wow.

Since we don't support floating point operations the same way Linux
does not support them, replace this with an integer multiplication
and division combo. This removes some 2kiB of size from the SPL as
the floating point ops are no longer pulled in from libgcc.

This was detected by enabling CONFIG_USE_PRIVATE_LIBGCC=y , which
does not contain the floating point bits.

Signed-off-by: Marek Vasut

arm: mvebu: Add complete SDRAM ECC scrubbing

2015-08-17T16:49:33+00:00

This patch introduces the SDRAM scrubbing for ECC enabled board
to fill/initialize the ECC bytes. This is done via the XOR engine
to speed up the process. The scrubbing is a 2-stage process:

1) SPL scrubs the area 0 - 0x100.0000 (16MiB) for the main U-Boot
2) U-Boot scrubs the remaining SDRAM area(s)

Signed-off-by: Stefan Roese 
Cc: Luka Perkov

arm: mvebu: sdram: Enable ECC support on Armada XP

2015-08-17T16:41:33+00:00

This is tested on the DB-MV784MP-GP eval board. To really enable ECC
support on this board the I2C EEPROM needs to get changed. As it
saves the enabling of ECC support internally. For this the following
commands can be used to enable ECC support on this board:

Its recommended for first save (print) the value(s) in this EEPROM
address:

=> i2c md 4e 0.1 2
0000: 05 00    ..

To enable ECC support you need to set bit 1 in the 2nd byte:

Marvell>> i2c mw 4e 1.1 02
Marvell>> i2c md 4e 0.1 2
0000: 05 02    ..

To disable ECC support again, please use this command:

Marvell>> i2c mw 4e 1.1 00
Marvell>> i2c md 4e 0.1 2
0000: 05 00    ..

On other AXP boards, simply plugging an ECC DIMM should be enough to
enable ECC support.

Signed-off-by: Stefan Roese 
Cc: Luka Perkov

ddr: altera: sequencer: Clean checkpatch issues

2015-08-08T12:14:30+00:00

Fix most of the dangling checkpatch issues, no functional change.
There are still 7 warnings, 1 checks , but those are left in place
for the sake of readability of the code.

Signed-off-by: Marek Vasut 
Acked-by: Dinh Nguyen

ddr: altera: sequencer: Clean data types

2015-08-08T12:14:29+00:00

Replace uintNN_t with uNN. No functional change.

Signed-off-by: Marek Vasut 
Acked-by: Dinh Nguyen

ddr: altera: sequencer: Pluck out misc macros from code

2015-08-08T12:14:29+00:00

Actually convert the sequencer code to use socfpga_sdram_misc_config
instead of the various macros. This is just an sed exercise here, no
manual coding needed.

This patch actually removes the need to include any board-specific
files in sequencer.c , so sequencer.c namespace is now no longer
poluted by QTS-generated macros.

Signed-off-by: Marek Vasut 
Acked-by: Dinh Nguyen

ddr: altera: sequencer: Zap SEQ_T(INIT|RESET)_CNTR._VAL

2015-08-08T12:14:29+00:00

This is another macro used to obfuscate the real code. The
T(INIT|RESET)_CNTR._VAL is always defined, so this indirection
is unnecessary. Get rid of this.

Signed-off-by: Marek Vasut 
Acked-by: Dinh Nguyen

ddr: altera: sequencer: Zap VFIFO_SIZE

2015-08-08T12:14:29+00:00

Just use READ_VALID_FIFO_SIZE directly, no need for this macro obfuscation.

Signed-off-by: Marek Vasut 
Acked-by: Dinh Nguyen