It looks to me like your communication isn't working at all, since your log looks like you're reading all ones: "id1 0xff, id2 0xff, id1 parity violation" appears for every chip that it's probing for, and the "parity violation" part in particular looks like a communication error.
On Tue, Feb 18, 2025 at 12:28 AM Frans Peens via flashrom < flashrom@flashrom.org> wrote: > . > > Hi Flashrom, > > I have a Winbond W25Q16 that i can read and write ok on raspberry pi 2b > > I've now tried the same process using a pi-400 and since now flashrom > returns with unusual response(s) > - writing and reading seems to work though..? (identical contents on > rewrite) > - btw : i am using WiringPi sysfs from bash to control the spi pins using > a std 'bus pirate' ribbon to header cable > > here the flashrom response... > > > Programming the SPI-Flash... > > flashrom unknown on Linux 6.6.51+rpt-rpi-v8 (aarch64) > flashrom is free software, get the source code at https://flashrom.org > > Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns). > === > SFDP has autodetected a flash chip which is not natively supported by > flashrom yet. > All standard operations (read, verify, erase and write) should work, but > to support all possible features we need to add them manually. > You can help us by mailing us the output of the following command to > flashrom@flashrom.org: > 'flashrom -VV [plus the -p/--programmer parameter]' > Thanks for your help! > === > Found Unknown flash chip "SFDP-capable chip" (2048 kB, SPI) on linux_spi. > === > This flash part has status UNTESTED for operations: WP > The test status of this chip may have been updated in the latest > development > version of flashrom. If you are running the latest development version, > please email a report to flashrom@flashrom.org if any of the above > operations > work correctly for you with this flash chip. Please include the flashrom > log > file for all operations you tested (see the man page for details), and > mention > which mainboard or programmer you tested in the subject line. > Thanks for your help! > Reading old flash chip contents... done. > Erasing and writing flash chip... > Warning: Chip content is identical to the requested image. > Erase/write done. > > Programming the SPI-Flash done. > > > > i tried 1/4 speed but no change > > then i performed (as suggested) > > flashrom -VV --programmer dummy > > - please see the attached file > - and advise... > > Best Regards & Wishes > > frans > > ._______________________________________________ > flashrom mailing list -- flashrom@flashrom.org > To unsubscribe send an email to flashrom-le...@flashrom.org >
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