I spent hours finding a bug in my GPIO kernel driver (blocking the system) until I found the reason:
While the system has to process a lot of data (interrupts), i.e. streaming of music, video, or handling signals from a GPIO. the kernel hangs showing an I2C controller timeout in the journal. This always happens when the CPU frequency is atomatically switched by the cpu governor. I am using this commands to disable frequency switching: cpufreq-set -c 0 -g performance cpufreq-set -d 1GHz cpufreq-set -u 1GHz to check if it worked: cpufreq-info this must print the line: current policy: frequency should be within 1000 MHz and 1000 MHz. If somebody knows a better way to disable thew cpu governor, please tell us. Is there any plan to solve the conflict between the cpu governor and the I2C causing I2C contoller timeouts ? Regards Harry -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
