T1042 high resolution timer support

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T1042 high resolution timer support

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dshtaingus
Contributor I

Hi All,

Our customer asking if a T1042 is supporting high resolution timer in Linux.

He wants to set it to 1000 Hz.

I didn't found any information regarding this issue.

I can configure option " CONFIG_HIGH_RES_TIMERS" in kernel, but according to help text:

" This option enables high resolution timer support. If your hardware is not capable then this option only increases the size of the kernel image."

Someone can help with this issue?

Thanks in advace

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yipingwang
NXP TechSupport
NXP TechSupport

Please configure 

HZ_1000=y

CONFIG_HIGH_RES_TIMERS=y

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1,318 Views
dshtaingus
Contributor I

Good day,

Thanks for the answer.

But I would like to know if there is a HW support?

To configure two fields in .config it's cool, but according to the comment, there must to be a HW support.

So my question is still remained: "Does T1042 has HW support in high resolution timer?"

Regards

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1,318 Views
yipingwang
NXP TechSupport
NXP TechSupport

 "CONFIG_HIGH_RES_TIMERS=y" was enabled for for PowerPC RT kernels in SDK release.

You may go ahead and try the config option.

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1,318 Views
dshtaingus
Contributor I

Good day,

Is there any news regarding my question?

Regards

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1,318 Views
dshtaingus
Contributor I

Hey,

As I mentioned before, my task was to ensure our customer, that T1042 is supporting high resolution timer in Linux.

I don't need to compile nothing for now.

I just need to find some kind of official documentation, in which there would be clearly explained that issue.

The modification and compilation of kernel are future task.

Meanwhile we are in "go / no go" situation.

Can you point me or provide the information I'm looking for?

I tried to look for that info, but without success so far.

Regards

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