Linux/AM4379: Interrupt can't be received by customized Linux

user5895520

Prodigy 30 points

Part Number: AM4379

Tool/software: Linux

Hi,

I built a custom Linux kernel and rootfs by buildroot.

but it can't correctly receive the PRU interrupt.

I did copy the Linux kernel to the SD image you provided in Processor-SDK, and it works normal.

I also copy the kernel module form the SDK to my own image, and load them, the remoteproc is working, and I can tell the PRU to load the firmware and run it.

so, I came here for you support if there is any thing I missing for the configuration.

Thanks

over 7 years ago

0 Biser Gatchev-XID over 7 years ago

TI__Guru**** 393215 points

Hi,

Please post which Linux version you use.

0 user5895520 over 7 years ago in reply to Biser Gatchev-XID

Prodigy 30 points

Linux am437x-evm 4.14.67-rt40 #1 PREEMPT RT Tue Dec 18 14:57:00 CST 2018 armv7l GNU/Linux

0 Nick Saulnier over 7 years ago in reply to user5895520

TI__Guru** 108210 points

Hello,

First, I want to set expectations: TI only supports Yocto. We do not support buildroot, or porting modules / functionality / etc from a platform that we support to a platform that we do not support. That means I probably will not be able to support you.

To verify your current setup: You are building a kernel and kernel modules in the Processor RT Linux 5.0. You are building your custom Linux kernel and rootfs by buildroot. When you copy kernel modules from the TI SDK build into your custom build, you can load those kernel modules and RemoteProc / PRU works as expected.

1) Is the above statement correct?

2) What modules are you copying over?

Regards,
Nick

0 user5895520 over 7 years ago

Prodigy 30 points

Hi,

We solve the issue, and we also thanks for the support

Thanks

0 Nick Saulnier over 7 years ago in reply to user5895520

TI__Guru** 108210 points

Glad it is working!

Nick

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Linux/AM4379: Interrupt can't be received by customized Linux