Hi Stefan. I think there's no other device on the SPI bus. Is there a software way to verify that? On the baseboard i'm sure there's not (I have the schematics), but I don't know about the module itself. The design guide for COM Express (http://www.picmg.org/openstandards/com-express/) recommends using SPI only for BIOS. From page 118: "The SPI interface is defined in this specification to service as an off-module option for BIOS storage. [...] Many current chipsets only specify SPI for BIOS/Firmware storage usage, so the COM.0 specification is limited to that connectivity use-case to enable maximum compatibility across Modules and silicon platforms. Additional features, such as SPI-based Trusted Platform Module support might be added to a given carrier design, but compatibility is not guaranteed across Modules."
Ricardo Menzer [email protected] (32)8865-8805 On Wed, Aug 13, 2014 at 8:08 PM, Stefan Tauner <[email protected]> wrote: > On Wed, 13 Aug 2014 16:24:43 -0300 > Ricardo Menzer <[email protected]> wrote: > >> I have also found that if I probe the chip three times, it will work >> only once. I mean, if I probe for the chip and it is found, the next >> two probes will fail. The third will work, and the next two will fail >> again, and so on. >> I'm attaching the logs for three consecutive probes and also the >> output of lspci -vvxxxnn. > > Hi, the logs look really weird. Is it possible that the boot* SPI bus is > shared with something else? The block diagram in the datasheet does not > look very detailed. *IIRC that SoC has more than one SPI master. > > -- > Kind regards/Mit freundlichen Grüßen, Stefan Tauner _______________________________________________ flashrom mailing list [email protected] http://www.flashrom.org/mailman/listinfo/flashrom
