On 12/11/2017 06:57 AM, Prabhakar Kushwaha wrote: > SPI-NOR framework currently supports- > - (1-1-1, 1-1-2, 1-1-4) read protocols > - read latency(dummy bytes) are hardcoded with the assumption > that the flash would support it. > - No support of mode bits. > - No support of flash size above 128Mib > > This patch set add support of 1-2-2, 1-4-4 read protocols. > It ports Linux commits "mtd: spi-nor: add a stateless method to support > memory size above 128Mib" and "mtd: spi-nor: parse Serial Flash > Discoverable Parameters (SFDP) tables". It enables 4byte address opcode > and run time flash parameters discovery including dummy cycle and mode > cycle. > > Finally it update fsl-quadspi driver to store(set_mode) spi bus mode and > provision for run-time LUTs creation. > > Note: This patch-set is only **compliation** tested. Sending RFC to get > early feed-back on the approach. > > Prabhakar Kushwaha (5): > sf: Add support of 1-2-2, 1-4-4 IO READ protocols > sf: add method to support memory size above 128Mib > sf: parse Serial Flash Discoverable Parameters (SFDP) tables > sf: fsl_qspi: Add support of fsl_qspi_set_mode > sf: fsl_quadspi: Configue LUT based on padding information > > drivers/mtd/spi/sf_internal.h | 230 +++++++++++++++- > drivers/mtd/spi/spi_flash.c | 574 > +++++++++++++++++++++++++++++++++++++++- > drivers/spi/fsl_qspi.c | 85 +++++- > include/spi_flash.h | 2 + > 5 files changed, 875 insertions(+), 18 deletions(-) >
Could you rather port the entire SPI NOR framework from Linux 4.14 ? That'd make more sense than porting bits and pieces on top of the current crappy code IMO. -- Best regards, Marek Vasut _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
