u-boot.git/drivers/mmc, branch v2015.07

mmc: sdhci.c: Add config option to use a fixed buffer for transfers

2015-07-10T12:54:05+00:00

While implementing SDIO/MMC SPL booting for the Marvell Armada 38x, the
following problem occured. The SPL runs in internal SRAM which is
the L2 cache locked to memory. When the MMC buffers now are located
on the stack (or bss), the SDIO controller (SDHCI) can't write into
this L2 cache memory.

This patch introduces a method to use a fixed buffer that will be
used for all transfers by defining CONFIG_FIXED_SDHCI_ALIGNED_BUFFER.
This way, the board can use this buffer address located in SDRAM
for all transfers. This solves this SPL problem on the A38x and
should only be used in the SPL U-Boot version.

Tested for SPL booting on Marvell Armada 38x DB-88F6820-GP board.

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

mmc: sdhci: Use timer based timeout detection in sdhci_send_command()

2015-07-10T12:54:00+00:00

The loop counter based timeout detection does not work on the Armada
38x based board (DB-88F6820-GP). At least with dcache enabled a
timeout is detected. Without dcache enabled, the timeout does not
occur. Increasing the loop counter solves this issue. But a better
solution is to use a timer based timeout detection instead. This
patch now implements this timer based detection.

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

mmc: bcm2835_sdhci: Restore original delay behavior

2015-06-25T21:04:37+00:00

Patch 33fe2fb8df01647f97a7bce96a1c7781a7f6d253 titled
"mmc: bcm283x: Remove get_timer_us() from mmc driver"
incorrectly replaced ad-hoc get_timer_us() function
with a plain get_timer(). The get_timer() operates in
mSec units instead of uSec though, which caused very
slow operation of the driver.

Restore the original behavior of the driver, but avoid
get_timer_us() and use timer_get_us() instead. The later
is part of the standard API.

Signed-off-by: Marek Vasut 
Cc: Jakub Kiciński 
Cc: Stephen Warren 
Tested-by: Jakub Kicinski

mmc_write.c: Make mmc_berase do 32bit safe 64bit math

2015-06-18T20:11:41+00:00

We want to see if the requested start or total block count are
unaligned.  We discard the whole numbers and only care about the
remainder.  Update the code to use div_u64_rem here and add a comment.

Cc: Hans de Goede 
Cc: Pantelis Antoniou 
Cc: Bernhard Nortmann 
Reported-by: Simon Glass 
Signed-off-by: Tom Rini 
Tested-by: Bernhard Nortmann 
Reviewed-by: Hans de Goede

sunxi: mmc: Enable pull-up on card-detect gpio pin

2015-06-04T12:08:28+00:00

On some boards we need to enable the internal pull-up te reliable detect
that no card is inserted.

Signed-off-by: Hans de Goede

Merge git://git.denx.de/u-boot-mpc85xx

2015-05-05T18:57:23+00:00

Merge branch 'master' of git://git.denx.de/u-boot-mmc

2015-05-05T11:00:38+00:00

ARM: mmc: bcm283x: Remove get_timer_us() from mmc driver

2015-05-05T09:29:42+00:00

The get_timer_us() function is something which is no longer
existing in case we use generic timer framework, so replace
it with get_timer().

Signed-off-by: Marek Vasut 
Cc: Stephen Warren 
Cc: Tyler Baker

tegra: mmc: Set the removable flag correctly

2015-05-05T09:29:42+00:00

If the mmc device is non-removable (as indicated by the device tree), set
the flag so that users of the device know.

Signed-off-by: Simon Glass 
Reviewed-by: Joe Hershberger

mmc: bcm2835_sdhci: Use calloc to allocate bcm2835_sdhci_host

2015-05-05T09:29:42+00:00

We need to clear the allocated memory explicitly as the included
struct sdhci_host has function pointers. Those are compared to NULL to
test if this (optional) feature is supported. Leaving them undefined let
u-boot jump to arbitrary memory.

Signed-off-by: Alexander Stein