During the boot process the following errors occur (dmesg):
[ 8.450327] apalis-tk1-k20 spi1.1: Error writing to the chip. [ 8.458947] apalis-tk1-k20 spi1.1: Problem flashing new firmware. [ 8.495075] apalis-tk1-k20: probe of spi1.1 failed with error -5
It seems the K20 chip cannot be flashed and because of that the additional GPIOs are not usable. What could be the reason for this? We flashed approx. 30 boards with our image before and all are working well. Could this be a hardware issue?