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Best SPI speed for flashrom on PI Zero W ?

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fugee ohu

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May 8, 2019, 11:02:08 AM5/8/19
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newest flashrom requires spi speed to be provided as an argument, what value can I use with a pi zero w?

Gordon Henderson

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May 8, 2019, 11:07:44 AM5/8/19
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In article <1971c57a-9e61-4e16...@googlegroups.com>,
fugee ohu <fuge...@gmail.com> wrote:
>newest flashrom requires spi speed to be provided as an argument, what value can I use with a pi zero w?

Whatever your target device needs. Start with 1000000 (ie 1Mhz)

-Gordon

fugee ohu

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May 8, 2019, 11:24:45 AM5/8/19
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On Wednesday, May 8, 2019 at 11:07:44 AM UTC-4, Gordon Henderson wrote:
> In article <1971c57a-9e61-4e16...@googlegroups.com>,
> fugee ohu wrote:
> >newest flashrom requires spi speed to be provided as an argument, what value can I use with a pi zero w?
>
> Whatever your target device needs. Start with 1000000 (ie 1Mhz)
>
> -Gordon

I've been getting a message ending in Read is not working on this chip

mm0fmf

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May 8, 2019, 6:18:06 PM5/8/19
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Well we're all bleedin' psychic here so you don't have to write that
error message out for us. We'll all just concentrate very hard and read
your mind.

fugee ohu

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May 8, 2019, 10:21:11 PM5/8/19
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pi@raspberrypi:~ $ sudo flashrom -p linux_spi:dev=/dev/spidev0.0 -r bad_flash.rom
flashrom v0.9.9-r1954 on Linux 4.14.98+ (armv6l)
flashrom is free software, get the source code at https://flashrom.org

Calibrating delay loop... OK.
Found Generic flash chip "unknown SPI chip (RDID)" (0 kB, SPI) on linux_spi.
===
This flash part has status NOT WORKING for operations: PROBE READ ERASE WRITE
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 flas...@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!
Read is not working on this chip. Aborting.

fugee ohu

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May 8, 2019, 10:29:54 PM5/8/19
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Just realized the error I just posted occurs when the clip isn't even connected to the chip
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