Hi,
the CPU clock setup for the T124 on the Jetson K1 board seems to have some
problems while booting:
The clock-frequency parameter in the default device-tree config is missing:
[ 0.080472] /cpus/cpu@0 missing clock-frequency property
[ 0.085605] /cpus/cpu@1 missing clock-frequency property
[ 0.090963] /cpus/cpu@2 missing clock-frequency property
[ 0.096350] /cpus/cpu@3 missing clock-frequency property
But when you add it, the warning disappears, but the clock still seems not to be
set up correctly:
cpus {
cpu@0 {
clock-frequency = <1938000000>;
};
cpu@1 {
clock-frequency = <1938000000>;
}
...
[ 7.035525] cpufreq: cpufreq_online: CPU0: Running at unlisted freq: 696000 KHz
[ 7.042895] cpufreq: cpufreq_online: CPU0: Unlisted initial frequency changed
to: 714000 KHz
For me this looks like it is using the frequency set up by the u-boot boot
loader. This might also explain why the kernel currently needs about 8 seconds
to boot which seems to be way too much for a Cortex-A15 device.
https://storage.kernelci.org/lsk/lsk-v3.18-16.07-133-ge8aab86f8308/arm-tegra_defconfig/lab-baylibre-seattle/boot-tegra124-jetson-tk1.html
Thanks,
Josef
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