On some Freescale SoC Internal DMA of eSDHC controller has bug.
So PIO Mode has been introduced to do data transfer using CPU.
Signed-off-by: Dipen Dudhat <dipen.dudhat@freescale.com>
When we set the read or write watermark in WML we should maintain the
rest of the register as is, rather than using some hard coded value.
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Acked-by: Stefano Babic <sbabic@denx.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
To support multiple block read command we must set abort or use auto
CMD12. If we booted from eSDHC controller neither of these are used
and thus we need to reset the controller to allow multiple block read
to function.
Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Acked-by: Stefano Babic <sbabic@denx.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
We need to stop the clocks on 83xx/85xx as well as imx. No need to make
this code conditional to just imx.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Stefano Babic <sbabic@denx.de>
Some registers of the mxcmmc driver were accessed using
16 bit accessor functions, because only the LSB is
significant. This is not needed and generates
warnings.
Signed-off-by: Stefano Babic <sbabic@denx.de>
There is be a path through mmc_read in drivers/mmc/mmc.c where
malloc'd memory is not freed before exiting mmc_read: it occurs if
mmc_set_blocklen() returns a non-zero value.
Reported-by: Quentin Armitage <Quentin@Armitage.org.uk>
Signed-off-by: Wolfgang Denk <wd@denx.de>
The esdhc controller in the mx51 processor is quite
the same as the one in some powerpc processors
(MPC83xx, MPC85xx). This patches adapts the driver
to support the arm mx51.
Signed-off-by: Stefano Babic <sbabic@denx.de>
Most controllers can check if there is a card in the slot.
However, they require pins that could be not available because
required by other functions and the detection of a card must
be performed in another way. This patch adds a weak function
that a board can implement to add its internal custom way
to check the presence of a MMC/SD card.
Signed-off-by: Stefano Babic <sbabic@denx.de>
Most cards do not answer if some reserved bits
in the ocr are set. However, some controllers
can set bit 7 (reserved for low voltages), but
how to manage low voltages SD card is not yet
specified.
Signed-off-by: Stefano Babic <sbabic@denx.de>
This is a port of Linux driver for SDHC host controller hardware
found on Freescale's MX2 and MX3 processors. Uses new generic MMC
framework (CONFIG_GENERIC_MMC) and it looks like there are some
problems with a framework (at least on LE cpus). Some of these
problems are addressed in the following patches.
Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Because twl4030 now has its own device files, move and rename
twl4030_mmc_config.
twl4030_mmc_config initializes the twl4030 power setting to
the mmc device. Because it is in the twl4030 power domain, move
it out of drivers/mmc/omap3_mmc.c and into drivers/power/twl4030.c.
The function was renamed to twl4030_power_mmc_init because all
the functions in this file are to have the format
twl4030_power_<device>_<action>
In this case the suffix is mmc_init so
device : mmc
action : init
Signed-off-by: Tom Rix <Tom.Rix@windriver.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Heiko Schocher <hs@denx.de>
We need to switch back to 1-bit before initialization or SD 2.0 cards
will fail to send SCR if we've switched to 4-bit already.
Signed-off-by: Ilya Yanok <yanok@emcraft.com>
This patch implements fdt_fixup_esdhc() function that is used to fixup
the device tree.
The function adds status = "disabled" propery if esdhc pins muxed away,
otherwise it fixups clock-frequency for esdhc nodes.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Return value of mmc_send_if_cond() can be safely ignored (as it is
done in Linux). This makes older cards work with MXC MCI controller.
Signed-off-by: Ilya Yanok <yanok@emcraft.com>
SCR & switch data are read from card as big-endian words and should be
converted to CPU byte order.
Signed-off-by: Yauhen Kharuzhy <jekhor@gmail.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Cards which are not compatible with SD 2.0 standard, may return response
for CMD8 command, but it will be invalid in terms of SD 2.0. We should
accept this case as admissible, just like Linux does.
Signed-off-by: Yauhen Kharuzhy <jekhor@gmail.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
The mmc code defines the response as an array of chars. However, it
access the response bytes both as (i) an array of four uints (with
casts) and (ii) as individual chars. The former case is used more
often, including by the driver when it assigns the response.
The char-wise accesses are broken on little endian systems because they
assume that the bytes in the uints are in big endian byte order.
This patch fixes this by changing the response to be an array of four
uints and replacing the char-wise accesses with equivalent uint-wise
accesses.
Signed-off-by: Rabin Vincent <rabin@rab.in>
The generic MMC core uses direct long long divisions, which do not build
with ARM EABI toolchains. Use lldiv() instead, which works everywhere.
Signed-off-by: Rabin Vincent <rabin@rab.in>
find_mmc_device returns NULL if an invalid device number is specified.
Check for this to avoid dereferencing NULL pointers.
Signed-off-by: Rabin Vincent <rabin@rab.in>
__attribute__ follows gcc's documented syntax and is generally more
common than __attribute. This change is only asthetic and should not
affect functionality.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
The Blackfin SDH controller is still using the legacy framework, so update
the driver to use the renamed functions.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
These names are being taken over by the new MMC framework. Hopefuly
the PXA can be easily ported, and these functions will go away entirely.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
omap3_mmc.c was changed to define mmc_legacy_init.
Remove unused functions.
Compile tested on all arm
Runtime tested on Zoom1.
Signed-off-by: Tom Rix <Tom.Rix@windriver.com>
Here's a new framework (based roughly off the linux one) for managing
MMC controllers. It handles all of the standard SD/MMC transactions,
leaving the host drivers to implement only what is necessary to
deal with their specific hardware.
This also hooks the infrastructure into the PowerPC board code
(similar to how the ethernet infrastructure now hooks in)
Some of this code was contributed by Dave Liu <daveliu@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
This is a port of the Linux Blackfin on-chip SDH driver to U-Boot.
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This makes it easier to use the driver on other platforms.
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Acked-by: Jean-Chritophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
In order to consolidate more of the various MMC drivers around the
tree, we must first have a common place to put them.
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Acked-by: Jean-Chritophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Dipen Dudhat
Roy Zang
Jerry Huang
Kumar Gala
Stefano Babic
Wolfgang Denk
Cliff Cai
Vaibhav Hiremath
Dirk Behme
Ilya Yanok
Tom Rix
Anton Vorontsov
Yauhen Kharuzhy
Rabin Vincent
Peter Tyser
Mike Frysinger
Andy Fleming
Jean-Christophe PLAGNIOL-VILLARD
Stefan Roese
Haavard Skinnemoen