Does not work without spispeed= on RPi about flashrom

[dhendrix]

On my rpi3 it seems to work without the spispeed parameter but very slowly. The devicetree shows spi-max-frequency set to 500KHz.

A hardcoded default is not a good solution since RPi is not the only user of the linux_spi driver and poor quality connection to the chip can require slowing down the speed as well. It might be worth asking the Raspberry Pi foundation to increase spi-max-frequency, but I don't expect that to land since they probably have other use cases in mind.

At the very least perhaps we can make flashrom print a message to the user to adjust spispeed if the chip ID is not found.

[iomonad]

Same here. It work only if specified otherwise the chip become unknown.

[docpyro]

Your comment fixes the issue I was having for days. Thank You Very Much!!!!!!!

[probonopd]

Maybe try with sudo?

[probonopd]

Thanks for confirming @iomonad - I think this should be fixed by hardcoding a default value. It took me some time to find this out.

[kfowlks]

@iomonad I can confirm this as well. I had the same issue with a pi-zero running a 4.9.59 Linux kernel and the most recent stable release of flashrom built from git.

[wareck]

Hello
i've just tested this software.
For me on a RPI3 it's better to use sudo flashrom -p linux_spi:dev=/dev/spidev0.0,spispeed=20000
It's a good compromize to speed and less error

[jal2]

Same problem here with flashrom version p1.0-74-g2568357 on a RPi 1 model B. Kernel is 4.14.34+, distribution Raspbian GNU/Linux 9.

[rnamdos]

I was able to finally probe my Macronix chip once (and only once) by setting the speed to 20000... cant get it to work again. I'm using Pi zero

[saraazizi76]

sorry. i have a question.some commands are listed in man page (8) for reading, writing, ... .where this commands should be run? in terminal of ubuntu? how can i run flashrom software???

[docpyro]

yes terminal if you have flashrom downloaded and setup as discussed elsewhere

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On Sun, Jul 28, 2019 at 3:34 AM saraazizi76 ***@***.***> wrote: sorry. i have a question.some commands are listed in man page (8) for reading, writing, ... .where this commands should be run? in terminal of ubuntu? how can i run flashrom software??? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#29?email_source=notifications&email_token=AC6OOMPYKJ3SJD6LQF5FZSLQBVDZ3A5CNFSM4EJHQJV2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD26ZEOQ#issuecomment-515740218>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AC6OOMPLJE3PQBRJMFDDP3TQBVDZ3ANCNFSM4EJHQJVQ> .

[saraazizi76]

yes terminal if you have flashrom downloaded and setup as discussed elsewhere
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On Sun, Jul 28, 2019 at 3:34 AM saraazizi76 @.***> wrote: sorry. i have a question.some commands are listed in man page (8) for reading, writing, ... .where this commands should be run? in terminal of ubuntu? how can i run flashrom software??? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#29?email_source=notifications&email_token=AC6OOMPYKJ3SJD6LQF5FZSLQBVDZ3A5CNFSM4EJHQJV2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD26ZEOQ#issuecomment-515740218>, or mute the thread https://github.com/notifications/unsubscribe-auth/AC6OOMPLJE3PQBRJMFDDP3TQBVDZ3ANCNFSM4EJHQJVQ .

tnx
i have another problem now. i wanna use ft2232_spi programmer , but when i connect this programmer to my laptop and run this command "./flashrom -r ../output_EEPROM -p ft2232_spi" in the terminal i got this error"Unable to open FTDI device: -3 (device not found).
Error: Programmer initialization failed."
Do you know why?