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Support configuration and use of bulk endpoints in the so-called EBC mode described in the DBC_usb31 databook (appendix E) Added a bit fifo_mode to usb_ep to indicate to the UDC driver that a specific endpoint is to operate in the EBC (or equivalent) mode when enabled Added macros for bits 15 and 14 of DEPCFG parameter 1 to indicate EBC mode and write back behaviour. These bits will be set to 1 when configuring an EBC endpoint as described in the programming guide Signed-off-by: Manan Aurora <maurora@google.com> Link: https://lore.kernel.org/r/20231031034641.660606-1-maurora@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>