How can I decrease DM-Timer interrupt latency on AM335x?

yuri exi

Intellectual 865 points

Hi all

I want to reduce the DM- timer interrupt response time of am335x.

I want to reduce as much as possible interrupt latency.

It does not matter even a little.

How can I do that?

thank you.

over 9 years ago

0 Biser Gatchev-XID over 9 years ago

TI__Guru**** 393215 points

Hi,

What software are you using?

0 yuri exi over 9 years ago in reply to Biser Gatchev-XID

Intellectual 865 points

I used to ti-sdk-am335x-evm-08.00.00.00
thank you reply

0 Biser Gatchev-XID over 9 years ago in reply to yuri exi

TI__Guru**** 393215 points

These latencies are inherent to classic Linux.

0 yuri exi over 9 years ago in reply to Biser Gatchev-XID

Intellectual 865 points

thank you your reply

I tested patch-3.14.28-rt25 for our kernel (SKD kernel version is 3.14.26)

but I had same problem...

if I modify to kernel, can I solve to this problem?

is there any solution for intrrupt lantecy?

It doesn't matter anymore solution or idea ...

thank you

0 Biser Gatchev-XID over 9 years ago in reply to yuri exi

TI__Guru**** 393215 points

At the moment there is no AM335X RT-Linux SDK released by TI. This forum supports only official TI releases.

0 yuri exi over 9 years ago in reply to Biser Gatchev-XID

Intellectual 865 points

ok, I get it

I have one question.

So what is the CPU model that supports RT-linux?

thank you your reply

0 Biser Gatchev-XID over 9 years ago in reply to yuri exi

TI__Guru**** 393215 points

At the moment the RT-Linux SDK is available for AM437X and AM57X.

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How can I decrease DM-Timer interrupt latency on AM335x?