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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel…
…/git/cjb/mmc * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (75 commits) mmc: core: eMMC bus width may not work on all platforms mmc: sdhci: Auto-CMD23 fixes. mmc: sdhci: Auto-CMD23 support. mmc: core: Block CMD23 support for UHS104/SDXC cards. mmc: sdhci: Implement MMC_CAP_CMD23 for SDHCI. mmc: core: Use CMD23 for multiblock transfers when we can. mmc: quirks: Add/remove quirks conditional support. mmc: Add new VUB300 USB-to-SD/SDIO/MMC driver mmc: sdhci-pxa: Add quirks for DMA/ADMA to match h/w mmc: core: duplicated trial with same freq in mmc_rescan_try_freq() mmc: core: add support for eMMC Dual Data Rate mmc: core: eMMC signal voltage does not use CMD11 mmc: sdhci-pxa: add platform code for UHS signaling mmc: sdhci: add hooks for setting UHS in platform specific code mmc: core: clear MMC_PM_KEEP_POWER flag on resume mmc: dw_mmc: fixed wrong regulator_enable in suspend/resume mmc: sdhi: allow powering down controller with no card inserted mmc: tmio: runtime suspend the controller, where possible mmc: sdhi: support up to 3 interrupt sources mmc: sdhi: print physical base address and clock rate ...
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,27 @@ | ||
SD and MMC Device Partitions | ||
============================ | ||
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Device partitions are additional logical block devices present on the | ||
SD/MMC device. | ||
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As of this writing, MMC boot partitions as supported and exposed as | ||
/dev/mmcblkXboot0 and /dev/mmcblkXboot1, where X is the index of the | ||
parent /dev/mmcblkX. | ||
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MMC Boot Partitions | ||
=================== | ||
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Read and write access is provided to the two MMC boot partitions. Due to | ||
the sensitive nature of the boot partition contents, which often store | ||
a bootloader or bootloader configuration tables crucial to booting the | ||
platform, write access is disabled by default to reduce the chance of | ||
accidental bricking. | ||
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To enable write access to /dev/mmcblkXbootY, disable the forced read-only | ||
access with: | ||
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echo 0 > /sys/block/mmcblkXbootY/force_ro | ||
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To re-enable read-only access: | ||
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echo 1 > /sys/block/mmcblkXbootY/force_ro |
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Original file line number | Diff line number | Diff line change |
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@@ -24,6 +24,7 @@ struct tegra_sdhci_platform_data { | |
int wp_gpio; | ||
int power_gpio; | ||
int is_8bit; | ||
int pm_flags; | ||
}; | ||
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#endif |
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