New Contributor
New ContributorHI AWu6,
thanks for the replay.
The slow boot, and generally the low performance of the processor was caused by a wrong definition of clocks/PLL/oscillators section in the devices tree. I update that device tree section with one found in linux-socfpga, (4.14.x) and everything goes well. Slow boot and generally low performance disappeared.
That devices tree works well with 3.10.x kernel but with 4.14.x no.
With the old device tree seems that the 4.14.x kernel started using a clock frequency lower than 800MHz. No one log or indication was present at startup in boot logs.
Have a good day,
Simone
New ContributorHi @SimoneBo,
I'm facing the same issue on DE10-nano platform and kernel 4.14 or later.
I tried to add some changes to device tree referring .dts file created by sopc2dts and put the updated dtb file to my system, but I was not able to solve this issue. I still see 200.00 BogoMIPS.
Could you kindly tell me what changes you applied to dts file ?
Best Regards,
minmax
New ContributorHi @minmax ,
I still see "200.00 BogoMIPS" but I can see that the overall performances was heavily improved.
I updated, in .dts file, the clocks/pll section as reported in 4.14.x of linux-socfpga git repo.
Regards,
Simone
New ContributorHello,
I am still facing the same issue with Linux kernel 5.19 + u-boot v2022.10. What exactly did you update in the device tree section to make the MPU clock frequency 800MHz?
Thanks in advance.
Vojtěch
