Today I was working on my 3 raspberries when I had to reboot one of them. After rebooting, my boot was stucked with the message below after the bootloader:
spi-bcm3825 fe204000.spi: could not get clk: -517 _ (blinking)
After restarting all my rpi4, I noticed that they were all blocked with the same behavior
My problem seems similar to this thread:
I would like to overcome this without reflashing the SD card but more important: understand why it happened?
I checked my power supply to see if it the voltage and the quality is ok and unfortunately I discovered that power was reaching peaks at 5,30v which is above 5,25v (Overvoltage). See the topic below:
I then used a lab power supply calibrated to 5v to be sure signal is fine and started the rpi4. Problem is still there.
I did long configuration work on these platform and would like to get the system back up and running without re-flashing the SD card. Would it be possible?
What could have gone wrong here since I did not worked on the two other tablets?
I also tried to use the keyboard to interrupt the auto boot but seems that no key is detected at that moment of boot…
I would really appreciate any help, thank you in advance
O.S: Ubuntu x64 20.04 LTS
Board: Raspberry pi 4 b
ZYMKEY4 without battery in developer mode.