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ab71188ce8
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Markus Niebel ab71188ce8 mmc: add setdsr support 
The eMMC and the SD-Card specifications describe the optional SET_DSR command.
During measurements at our lab we found that some cards implementing this feature
having really strong driver strengts per default. This can lead to voltage peaks
above the specification of the host on signal edges for data sent from a card to
the host.

Since availability of a given card type may be shorter than the time a certain
hardware will be produced it is useful to have support for this command (Alternative
would be changing termination resistors and adapting the driver strength of the
host to the used card.)

Following proposal for an implementation:

- new field that reflects CSD field DSR_IMP in struct mmc
- new field for design specific DSR value in struct mmc
- board code can set DSR value in mmc struct just after registering an controller
- mmc_startup sends the the stored DSR value before selecting a card, if DSR_IMP is set

Additionally the mmc command is extended to make is possible to play around with different
DSR values.

The concept was tested on a i.MX53 based platform using a Micron eMMC card where the default
DSR is 0x0400 (12mA) but in our design 0x0100 (0x0100) were enough. To use this feature for
instance on a mx53loco one have to add a call to mmc_set_dsr() in board_mmc_init() after
calling fsl_esdhc_initialize() for the eMMC.

Signed-off-by: Markus Niebel <Markus.Niebel@tqs.de>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
2014-01-09 11:47:51 +02:00
..
spl common: convert makefiles to Kbuild style 2013-10-31 13:26:44 -04:00
bedbug.c Consolidate bool type 2013-04-01 16:33:52 -04:00
board_f.c board_f: explicitly disable console on early boot 2013-12-13 09:17:32 -05:00
board_r.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
bootstage.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
bouncebuf.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_ambapp.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_bdinfo.c ppc4xx: Remove support for PPC405CR CPUs 2013-08-20 11:35:24 -04:00
cmd_bedbug.c Consolidate bool type 2013-04-01 16:33:52 -04:00
cmd_bmp.c Coding Style cleanup: replace leading SPACEs by TABs 2013-10-14 16:06:54 -04:00
cmd_boot.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_bootldr.c Blackfin: bootldr: use common defines 2011-04-08 00:44:27 -04:00
cmd_bootm.c common/cmd_bootm: extend do_bootm_vxworks to support the new VxWorks boot interface. 2013-12-16 08:59:05 -05:00
cmd_bootmenu.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_bootstage.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_cache.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_cbfs.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_console.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_cplbinfo.c various cmd_* files: fixed layout a little bit 2010-08-09 01:07:37 +02:00
cmd_cramfs.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_dataflash_mmc_mux.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_date.c Merge branch 'master' of git://git.denx.de/u-boot-i2c 2013-07-24 09:50:24 -04:00
cmd_dcr.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_dfu.c usb: new board-specific USB init interface 2013-10-20 23:42:40 +02:00
cmd_diag.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_disk.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_display.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_dtt.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_echo.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_eeprom.c cmd_eeprom: bug fix for i2c read/write 2013-12-05 12:25:01 +01:00
cmd_elf.c Correct vxWorks elf boot to load at correct address 2013-12-13 09:17:32 -05:00
cmd_exit.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_ext2.c Fix number base handling of "load" command 2013-10-07 15:54:18 -04:00
cmd_ext4.c Fix number base handling of "load" command 2013-10-07 15:54:18 -04:00
cmd_fat.c Fix number base handling of "load" command 2013-10-07 15:54:18 -04:00
cmd_fdc.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_fdos.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_fdt.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_fitupd.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_flash.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_fpga.c fpga: Add support for gzip images with bitstreams 2013-11-06 09:15:12 +01:00
cmd_fpgad.c powerpc/ppc4xx: Convert new gdsys files to SPDX license tags 2013-07-26 15:32:59 -04:00
cmd_fs.c Fix number base handling of "load" command 2013-10-07 15:54:18 -04:00
cmd_fuse.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_gettime.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_gpio.c Convert cmd_usage() calls in common to use a return value 2012-03-06 21:09:46 +01:00
cmd_gpt.c cmd/gpt: Support gpt command for all devices 2013-11-08 15:25:12 -05:00
cmd_hash.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_help.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_i2c.c i2c: fix i2c dev command for not using new framework 2013-08-27 05:49:52 +02:00
cmd_ide.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_immap.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_ini.c SPDX-License-Identifier: convert BSD-3-Clause files 2013-08-19 15:45:35 -04:00
cmd_io.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_irq.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_itest.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_jffs2.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_ldrinfo.c Blackfin: ldrinfo: new command 2011-04-08 00:44:27 -04:00
cmd_led.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_license.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_load.c Enable xmodem support 2013-08-16 13:45:15 -04:00
cmd_log.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_mac.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_md5sum.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_mdio.c net: add support for extended registers to mdio command 2013-11-22 16:50:52 -06:00
cmd_mem.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_mfsl.c common: fsl: Fix broken SPDX-License-Identifier change 2013-10-16 09:24:38 -04:00
cmd_mii.c net: trivial: Fix typos in mii field descriptions 2013-11-22 16:50:04 -06:00
cmd_misc.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_mmc_spi.c Convert cmd_usage() calls in common to use a return value 2012-03-06 21:09:46 +01:00
cmd_mmc.c mmc: add setdsr support 2014-01-09 11:47:51 +02:00
cmd_mp.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_mtdparts.c cmd_mtdparts: use 64 bits for flash size, partition size & offset 2013-10-09 12:52:16 -05:00
cmd_nand.c cmd_nand: Do not show usage when scrub is aborted 2013-08-22 17:25:03 -05:00
cmd_net.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_nvedit.c env: fix the env export varname 2013-11-08 15:25:14 -05:00
cmd_onenand.c mtd: resync with Linux-3.7.1 2013-05-31 17:12:03 -05:00
cmd_otp.c Convert cmd_usage() calls in common to use a return value 2012-03-06 21:09:46 +01:00
cmd_part.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_pci.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_pcmcia.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_portio.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_pxe.c pxe: fix handling of absolute paths 2013-11-04 11:24:22 -05:00
cmd_read.c Add a command to read raw blocks from a partition 2012-12-11 13:17:33 -07:00
cmd_reginfo.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_reiser.c cmd_reiser: normalize 'file not found' errors 2013-11-08 15:25:13 -05:00
cmd_sandbox.c cmd_sandbox.c: Update for do_(load|save) not taking a number base 2013-10-14 16:49:20 -04:00
cmd_sata.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_scsi.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_setexpr.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_sf.c sf: Add GPL-2.0+ SPDX-License-Identifier for missing ones 2013-10-16 00:14:01 +05:30
cmd_sha1sum.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_softswitch.c blackfin: bf609: add softswitch config command 2013-05-13 16:26:12 +08:00
cmd_sound.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_source.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_spi.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_spibootldr.c various cmd_* files: fixed layout a little bit 2010-08-09 01:07:37 +02:00
cmd_spl.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_strings.c Convert cmd_usage() calls in common to use a return value 2012-03-06 21:09:46 +01:00
cmd_terminal.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_test.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_thordown.c cmd:thor: Support for TIZEN's download command (thordown) 2013-10-20 23:42:41 +02:00
cmd_time.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_tpm.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_trace.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_tsi148.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_ubi.c cmd_ubi: add write.part command, to write a volume in multiple parts 2013-10-09 12:52:22 -05:00
cmd_ubifs.c cmd_ubifs: normalize 'file not found' errors 2013-11-08 15:25:13 -05:00
cmd_universe.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
cmd_unzip.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_usb_mass_storage.c usb: ums: add ums exit feature by ctrl+c or by detach usb cable 2013-11-08 20:46:19 +01:00
cmd_usb.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_version.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cmd_ximg.c sandbox: Correct compiler warnings in cmd_bootm/cmd_ximg 2013-09-03 13:29:24 -06:00
cmd_yaffs2.c u-boot: Update yaffs2 file system 2012-08-09 23:39:18 +02:00
cmd_zfs.c cmd_zfs: normalize 'file not found' errors 2013-11-08 15:25:13 -05:00
cmd_zip.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
command.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
console.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
ddr_spd.c mpc8xxx: DDR2/DDR3: Clean up DIMM-type switch statements 2011-04-04 09:24:43 -05:00
dlmalloc.c Consolidate bool type 2013-04-01 16:33:52 -04:00
dlmalloc.src Consolidate bool type 2013-04-01 16:33:52 -04:00
edid.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
env_attr.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
env_callback.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
env_common.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_dataflash.c env: dataflash: fix env_init issue 2013-10-14 16:06:52 -04:00
env_eeprom.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_embedded.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_fat.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_flags.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
env_flash.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_mmc.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_nand.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_nowhere.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_nvram.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_onenand.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
env_remote.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
env_sf.c cmd_sf|env_sf: Fix code cleanup 2013-08-06 23:58:43 +05:30
env_ubi.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
exports.c Fix SPI build errors in exports.c 2011-12-07 08:41:22 +01:00
fdt_support.c common/fdt_support.c: avoid unintended return from fdt_fixup_memory_banks() 2013-12-16 08:59:42 -05:00
flash.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
hash.c hash.c: Correct non-hash subcommand crc32 addr-save support 2013-11-25 10:41:51 -05:00
hush.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
hwconfig.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
image-fdt.c FIT: delete unnecessary casts 2013-09-20 10:30:54 -04:00
image-fit.c FIT: delete unnecessary casts 2013-09-20 10:30:54 -04:00
image-sig.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
image.c FIT: delete unnecessary casts 2013-09-20 10:30:54 -04:00
iomux.c Coding Style cleanup: remove trailing white space 2013-10-14 16:06:53 -04:00
kallsyms.c Add support for Linux-like kallsysms 2009-06-12 20:45:48 +02:00
kgdb_stubs.c kgdb: add default generic stubs 2010-01-18 00:23:00 +01:00
kgdb.c Make sure that argv[] argument pointers are not modified. 2010-07-04 23:55:42 +02:00
lcd.c lcd: allow overriding lcd_get_size() 2013-11-12 09:35:17 +01:00
lynxkdi.c checkpatch whitespace cleanups 2011-10-22 01:13:35 +02:00
main.c autoboot: add an option to override keyed autoboot 2013-11-08 15:25:14 -05:00
Makefile Makefile: delete unnecessary CPPFLAGS settings 2013-12-13 09:18:45 -05:00
memsize.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
menu.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
miiphyutil.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
modem.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
s_record.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
splash.c video: consolidate splash screen alignment code 2013-07-08 20:21:24 +02:00
stdio.c serial: arm_dcc: Remove stdio structure support 2013-08-13 08:38:29 +02:00
system_map.c Add support for Linux-like kallsysms 2009-06-12 20:45:48 +02:00
update.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
usb_hub.c usb: Use well-known descriptor sizes when parsing configuration 2013-08-26 21:56:34 +02:00
usb_kbd.c console: usb: kbd: To fix slow TFTP booting 2013-08-26 21:56:35 +02:00
usb_storage.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
usb.c usb: add enum usb_init_type parameter to usb_lowlevel_init 2013-10-20 23:45:26 +02:00
xyzModem.c Add eCos-2.0 SPDX-License-Identifier to source files 2013-07-24 09:45:01 -04:00