lib_qspi_fast_read is a library for interfacing with a QSPI flash device on an XMOS device to perform quad read operations.
Supports SCLK up to 133 MHz versus default lib_quadflash limit of 25 MHz
Allows support for multiple flash parts, one per IO context
Quad read 0xEB command only
Provides startup and shutdown, enabling ports to be reused in some situations
Supports raw reads and nibble swapped reads to support various flash storage layouts