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mmc: add bkops-enable command

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Add new command that provides possibility to enable the
background operations handshake functionality
(BKOPS_EN, EXT_CSD byte [163]) on eMMC devices.

This is an optional feature of eMMCs, the setting is write-once.
The command must be explicitly taken into use with
CONFIG_CMD_BKOPS_ENABLE.

Signed-off-by: Tomas Melin <tomas.melin@vaisala.com>
This commit is contained in:
Tomas Melin
2016-11-25 11:01:03 +02:00
committed by Jaehoon Chung
parent f0ecfc5e7e
commit cd3d48807d
4 changed files with 81 additions and 0 deletions
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9
cmd/Kconfig
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@@ -572,6 +572,15 @@ config SYS_AMBAPP_PRINT_ON_STARTUP
help
Show AMBA Plug-n-Play information on startup.
config CMD_BKOPS_ENABLE
bool "mmc bkops enable"
depends on CMD_MMC
default n
help
Enable command for setting manual background operations handshake
on a eMMC device. The feature is optionally available on eMMC devices
conforming to standard >= 4.41.
config CMD_BLOCK_CACHE
bool "blkcache - control and stats for block cache"
depends on BLOCK_CACHE