Marcel Moolenaar wrote: > On Mar 14, 2011, at 8:09 AM, Aleksandr Rybalko wrote: > >> Hi, all. >> >> proposed patch add support of NOR flash arrays to cfi driver >> http://my.ddteam.net/files/2011-03-11_cfi_flash_array_support.patch > > Hi Aleksandr, > > The patch is interesting, but combines a whole bunch of different > changes. Some of the changes are similar to the fixes we have at > Juniper ourselves, so getting the driver sync'd up is a good idea. > Not to mention that we have added support for the SPI interface. > > Just a quick question: is an array different from 2 independent > CFI devices on the same bus? I mean: can we support an array by > having 2 driver instances? > > Thanks,
Arrays can be horizontal or vertical. A vertical array is just two chips, 0->XXXXX and XXXXX+1->YYYYYY. This would work with 2 driver instances. Horizontal (interleaved) is two chips that share a single address space and provide alternating bits/bytes/words. This would not work with two instances. -- Andrew Duane Juniper Networks 978-589-0551 10 Technology Park Dr adu...@juniper.net Westford, MA 01886-3418 _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
