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linux/drivers/mmc/core
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Marek Szyprowski 726b6324e3 mmc: pwrseq: add driver for emmc hardware reset 
This patch provides a simple mmc-pwrseq-emmc driver, which controls
single gpio line. It perform standard eMMC hw reset procedure, as
descibed by Jedec 4.4 specification. This procedure is performed just
after MMC core enabled power to the given mmc host (to fix possible
issues if bootloader has left eMMC card in initialized or unknown
state), and before performing complete system reboot (also in case of
emergency reboot call). The latter is needed on boards, which doesn't
have hardware reset logic connected to emmc card and (limited or broken)
ROM bootloaders are unable to read second stage from the emmc card if
the card is left in unknown or already initialized state.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2015-02-04 09:45:09 +01:00
..
bus.c mmc: Add SDIO function devicetree subnode parsing 2015-01-19 09:56:26 +01:00
bus.h mmc: rename dev_to_mmc_card() to mmc_dev_to_card() 2010-10-23 21:11:12 +08:00
core.c mmc: core: Invoke mmc_pwrseq_post_power_on() prior MMC_POWER_ON state 2015-02-03 20:56:58 +01:00
core.h mmc: core: Simplify by adding mmc_execute_tuning() 2015-01-19 09:56:30 +01:00
debugfs.c mmc: core: Use mmc_get_ext_csd() instead of mmc_send_ext_csd() 2014-11-10 12:40:44 +01:00
host.c mmc: core: Initial support for MMC power sequences 2015-01-28 12:31:12 +01:00
host.h mmc: start removing enable / disable API 2012-03-27 12:20:03 -04:00
Kconfig mmc: core: Use MMC_UNSAFE_RESUME as default behavior 2014-02-13 22:58:15 -05:00
Makefile mmc: pwrseq: add driver for emmc hardware reset 2015-02-04 09:45:09 +01:00
mmc_ops.c mmc: core: Make tuning block patterns static 2015-01-19 09:56:24 +01:00
mmc_ops.h mmc: core: Add helper function for EXT_CSD support 2014-11-10 12:40:41 +01:00
mmc.c mmc: Resolve BKOPS compatability issue 2015-01-29 11:15:12 +01:00
pwrseq_emmc.c mmc: pwrseq: add driver for emmc hardware reset 2015-02-04 09:45:09 +01:00
pwrseq_simple.c mmc: pwrseq_simple: Add optional reference clock support 2015-01-30 12:10:23 +01:00
pwrseq.c mmc: pwrseq: add driver for emmc hardware reset 2015-02-04 09:45:09 +01:00
pwrseq.h mmc: pwrseq: add driver for emmc hardware reset 2015-02-04 09:45:09 +01:00
quirks.c mmc: quirks: Fixup debug message 2014-07-09 11:26:03 +02:00
sd_ops.c mmc: sd: warn if card stays busy during init 2014-07-09 11:26:07 +02:00
sd_ops.h mmc: add erase, secure erase, trim and secure trim operations 2010-08-12 08:43:30 -07:00
sd.c mmc: core: Simplify by adding mmc_execute_tuning() 2015-01-19 09:56:30 +01:00
sd.h mmc: drop the speed mode of card's state 2014-05-12 18:05:53 -04:00
sdio_bus.c mmc: Add SDIO function devicetree subnode parsing 2015-01-19 09:56:26 +01:00
sdio_bus.h
sdio_cis.c mmc: sdio: Change pr_warning to pr_warn_ratelimited 2012-07-22 15:25:48 -04:00
sdio_cis.h
sdio_io.c mmc: sdio: Use multiple scatter/gather list 2012-12-06 13:54:43 -05:00
sdio_irq.c mmc: Convert pr_warning to pr_warn 2014-09-24 10:13:09 +02:00
sdio_ops.c mmc: sdio: Use multiple scatter/gather list 2012-12-06 13:54:43 -05:00
sdio_ops.h sdio: recognize io card without powercycle 2010-03-12 15:52:28 -08:00
sdio.c mmc: core: Simplify by adding mmc_execute_tuning() 2015-01-19 09:56:30 +01:00
slot-gpio.c mmc: slot-gpio: Allow host driver to provide isr for card-detect interrupts 2015-01-19 09:56:29 +01:00
slot-gpio.h mmc: slot-gpio: Make mmc_gpio_alloc() available for MMC core 2015-01-19 09:56:17 +01:00