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usb: net: update README.usb to list all USB ethernet options

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- extend the discussion of USB network related config options such that
  all available adapter drivers are listed, and that the 'usb' command
  for the interactive prompt and scripting becomes available
- suggest to *not* put individual IP configuration parameters into the
  exectuable, but instead to put them into external environment or fetch
  them from network

Signed-off-by: Gerhard Sittig <gsi@denx.de>
Acked-by: Simon Glass <sjg@chromium.org>
Acked-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Gerhard Sittig 2014-03-08 19:46:18 +01:00 committed by Tom Rini
parent 9a6a109f07
commit dd11acaa74
1 changed files with 11 additions and 2 deletions
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13
doc/README.usb
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@ -127,8 +127,14 @@ To enable USB Host Ethernet in U-Boot, your platform must of course
support USB with CONFIG_CMD_USB enabled and working. You will need to
add some config settings to your board header file:
#define CONFIG_CMD_USB /* the 'usb' interactive command */
#define CONFIG_USB_HOST_ETHER /* Enable USB Ethernet adapters */
#define CONFIG_USB_ETHER_ASIX /* Asix, or whatever driver(s) you want */
and one or more of the following for individual adapter hardware:
#define CONFIG_USB_ETHER_ASIX
#define CONFIG_USB_ETHER_MCS7830
#define CONFIG_USB_ETHER_SMSC95XX
As with built-in networking, you will also want to enable some network
commands, for example:
@ -148,7 +154,10 @@ settings should start you off:
You can also set the default IP address of your board and the server
as well as the default file to load when a 'bootp' command is issued.
All of these can be obtained from the bootp server if not set.
However note that encoding these individual network settings into a
common exectuable is discouraged, as it leads to potential conflicts,
and all the parameters can either get stored in the board's external
environment, or get obtained from the bootp server if not set.
#define CONFIG_IPADDR 10.0.0.2 (replace with your value)
#define CONFIG_SERVERIP 10.0.0.1 (replace with your value)