On May 25, 2010, at 10:38 AM, Richard A. Smith wrote: > On 05/24/2010 11:03 PM, Mitch Bradley wrote: >> Another protocol idea is at >> http://wiki.laptop.org/go/Talk:XO_1.75_HOST_to_EC_Protocol > > The SPI interface on the CPU is shared with the SPI boot flash. So on > boot the CPU has to be master and then switch over to slave when the > boot it finished. To use this setup we will also have to negotiate a > master slave switch when the CPU wants to change mfg data or when it > wants to update the firmware.
Not quite true, as there are additional SPI interfaces available through the SSP ports. wad _______________________________________________ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel