tree 1cb60f3310af75dcc24633626bfcde1e4091ab07
parent 98bdcb46de824e6671671ed83465cec3087f69ba
author Simon Buhrow <simon.buhrow@sieb-meyer.de> 1617972519 +0200
committer Nico Huber <nico.h@gmx.de> 1672935322 +0000

ft2232_spi.c: Implement spi_send_multicommand()

Every ftdi_write_data() call is quite time consuming as the ftdi-chips
seems to take always 2-3ms to respond. This leads to what the comment
already says: Minimize USB transfers by packing as many commands as
possible together. So I packed the WREN command together with the
following operation which can be program or erase operation.

This saves about 1 minute when programming a 128MBit Flash within a
virtualized setup.

Signed-off-by: Simon Buhrow <simon.buhrow@posteo.de>
Change-Id: Ie4a07499ec5ef0af23818593f45dc427285a9e8a
Original-Reviewed-on: https://review.coreboot.org/c/flashrom/+/40477
Original-Reviewed-by: Nico Huber <nico.h@gmx.de>
Original-Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/flashrom-stable/+/71390
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>