Shutter closes and opens w/ Pi 4 about pylepton HOT 2 CLOSED

I don't know about your FFC issues, but regarding differences between older raspbian releases and those that support pi4, there was some frequency scaling features added that can affect SPI transfer rates. To stop the frequency scaling, you can try the following:

sudo sh -c "echo performance > /sys/devices/system/cpu/cpufreq/policy0/scaling_governor"

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Hi,

Thank you for that suggestion and I did make that change.

1. I installed cpufrequtils and I changed GOVERNOR = performance as a default option. Now the frequency has been changed from 700Mhz to 1.5Ghz. I believe there is no issue on that.
2. Also, I have increased the SPI buffer size to 65536.
3. I changed SPI_MESSAGE_LIMIT = 59 for better spi reading. I hope that does not create issues too.

What's your feedback on three changes I made as stated above?

Thanks,
Akshay

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