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README: Document current DFU CONFIG options

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Add documentation for the current DFU config options.  DFU is a standard
USB device class so more information is available from usb.org

Signed-off-by: Tom Rini <trini@ti.com>
This commit is contained in:
Tom Rini 2013-03-14 05:32:47 +00:00 committed by Marek Vasut
parent 645b271a60
commit b3ba6e94b8
1 changed files with 13 additions and 0 deletions
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@ -1344,6 +1344,19 @@ The following options need to be configured:
CONFIG_SH_MMCIF_CLK
Define the clock frequency for MMCIF
- USB Device Firmware Update (DFU) class support:
CONFIG_DFU_FUNCTION
This enables the USB portion of the DFU USB class
CONFIG_CMD_DFU
This enables the command "dfu" which is used to have
U-Boot create a DFU class device via USB. This command
requires that the "dfu_alt_info" environment variable be
set and define the alt settings to expose to the host.
CONFIG_DFU_MMC
This enables support for exposing (e)MMC devices via DFU.
- Journaling Flash filesystem support:
CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE,
CONFIG_JFFS2_NAND_DEV