[Translated by Google] Q:
I am developing the algorithm through the NE10 project on imx8. The strange thing is
that the same algorithm is not changing when the main frequency is 1G and 1.5G.
echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
Will raise the frequency to 1.5G, and pass
It is reasonable to say that the calculation speed of neon should be proportional to the
main frequency of ARM. Is the CPU not really rising to 1.5G, or the reason of NEON engine?
A: seems 1.5G operating point is not enabled in linux bsp, please check dts file
linux/arch/arm64/boot/dts/freescale/fsl-imx8mq.dtsi
fsl-imx8mq.dtsi\freescale\dts\boot\arm64\arch - linux-imx - i.MX Linux kernel
&A53_0 {
operating-points = <
/* kHz uV */
1000000 900000
800000 900000
..}
Best regards
igor
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