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| author | Tom Rini | 2024-04-14 15:58:31 -0600 |
|---|---|---|
| committer | Tom Rini | 2024-04-14 15:58:31 -0600 |
| commit | b03b49046af5dfca599d2ce8f0aafed89b97aa91 (patch) | |
| tree | 36f06c2f124f8181549bc57a59777976ed1eaee1 /doc | |
| parent | 57cb92de7a9d01be1ce72af003651efc80ac67e2 (diff) | |
| parent | 63f6a449bffe46beca89580d3efa48e5d041025c (diff) | |
Merge https://source.denx.de/u-boot/custodians/u-boot-usb
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/usage/environment.rst | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/doc/usage/environment.rst b/doc/usage/environment.rst index ebf75fa948a..7d4b448cb30 100644 --- a/doc/usage/environment.rst +++ b/doc/usage/environment.rst @@ -366,6 +366,19 @@ tftpwindowsize This means the count of blocks we can receive before sending ack to server. +usb_ignorelist + Ignore USB devices to prevent binding them to an USB device driver. This can + be used to ignore devices are for some reason undesirable or causes crashes + u-boot's USB stack. + An example for undesired behavior is the keyboard emulation of security keys + like Yubikeys. U-boot currently supports only a single USB keyboard device + so try to probe an useful keyboard device. The default environment blocks + Yubico devices as common devices emulating keyboards. + Devices are matched by idVendor and idProduct. The variable contains a comma + separated list of idVendor:idProduct pairs as hexadecimal numbers joined + by a colon. '*' functions as a wildcard for idProduct to block all devices + with the specified idVendor. + vlan When set to a value < 4095 the traffic over Ethernet is encapsulated/received over 802.1q |