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Commit f3e27a80 authored by Baolin Wang's avatar Baolin Wang Committed by Jonathan Corbet
Browse files

Documentation: mmc: Add the introduction for mmc-utils 



This patch introduces one mmc test tools called mmc-utils, which is convenient
if someone wants to exercise and test MMC/SD devices from userspace.

Signed-off-by: default avatarBaolin Wang <baolin.wang@linaro.org>
Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent f7ca20de

Documentation/mmc/00-INDEX

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Original line number Diff line number Diff line
@@ -6,3 +6,5 @@ mmc-dev-parts.txt 
        - info on SD and MMC device partitions

mmc-async-req.txt

        - info on mmc asynchronous requests

mmc-tools.txt

	- info on mmc-utils tools

Documentation/mmc/mmc-tools.txt

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+34 −0
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MMC tools introduction

======================



There is one MMC test tools called mmc-utils, which is maintained by Chris Ball,

you can find it at the below public git repository:

http://git.kernel.org/cgit/linux/kernel/git/cjb/mmc-utils.git/



Functions

=========



The mmc-utils tools can do the following:

 - Print and parse extcsd data.

 - Determine the eMMC writeprotect status.

 - Set the eMMC writeprotect status.

 - Set the eMMC data sector size to 4KB by disabling emulation.

 - Create general purpose partition.

 - Enable the enhanced user area.

 - Enable write reliability per partition.

 - Print the response to STATUS_SEND (CMD13).

 - Enable the boot partition.

 - Set Boot Bus Conditions.

 - Enable the eMMC BKOPS feature.

 - Permanently enable the eMMC H/W Reset feature.

 - Permanently disable the eMMC H/W Reset feature.

 - Send Sanitize command.

 - Program authentication key for the device.

 - Counter value for the rpmb device will be read to stdout.

 - Read from rpmb device to output.

 - Write to rpmb device from data file.

 - Enable the eMMC cache feature.

 - Disable the eMMC cache feature.

 - Print and parse CID data.

 - Print and parse CSD data.

 - Print and parse SCR data.