+ linux-mtd list On Friday 10 May 2013 04:39 PM, Sourav Poddar wrote: > Hi, > > I am trying to work out a way to write a QSPI serial flash interface > driver > for my IP. The idea is to have an execute in place usecase. > > We have a configuration port from which the spi core can be configured > and a > memory mapped port from which the data can be read/write from/to serial > flash device. > > As far as I can understand, I dont think it will be correct/possible > to write this > driver making use of the generice spi framework(drivers/spi/spi.c) as > that > framework is more suited for generic spi use case, where in you can load > your Image from external SPI devices into DDR and then execute. ? > > But for cases, where qspi is connected to serial flash device (XIP is > needed) what > we might need is some framework which just passes the buffers and its > length to > our driver which in turn will configure the qspi to initiate the > transfer. > > What can be the best framework to use for the above use case? > > I saw a device(m25p80) using mtd framework for some similar usecase. > Is it the mtd which should be used? OR will it be a > good idea to go for a generic qspi framework(drivers/qspi) which can be > used by qspi flash devices having a memory mapped interface. ? > > Thanks, > Sourav
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