AM6442: PRU ICSS PWM Linux Driver

Tony Tang

Mastermind 28112 points

Part Number: AM6442

Can Linux driver support PRU ICSSG PWM now?

Or how to control PRU ICSSG PWM from A53 Linux?

over 2 years ago

0 Nick Saulnier over 2 years ago

TI__Guru* 93405 points

Hello Tony,

We do not currently have a Linux driver for controlling the PWMs in the PRU subsystem on AM64x. I also do not see any Jira requirements for future development of such software.

We do currently have this example code for PRU controlling PWM instances:

ICSSG_PWM.zip

Regards,

Nick

0 cayden liu over 2 years ago in reply to Nick Saulnier

TI__Intellectual 1216 points

Hi Nick,

Thanks for your example code. However, there is an error after compile program as below.

Would you mind help with it?

0 Yang JiangHua over 2 years ago in reply to cayden liu

Prodigy 10 points

Manually writing registers, error prompted by CCS

0 Nick Saulnier over 2 years ago in reply to Yang JiangHua

TI__Guru* 93405 points

To confirm, did you fix the issue? Or does this still need attention?

REgards,

Nick

0 cayden liu over 2 years ago in reply to Nick Saulnier

TI__Intellectual 1216 points

They didn`t fix this issue so far.

0 Nick Saulnier over 2 years ago in reply to cayden liu

TI__Guru* 93405 points

Cayden, is Yang a member of your team? Or are they a different customer?

You are not going to be able to compile PRU code without a PRU compiler. The customer can find more information about installing the PRU compiler in the PRU Getting Started Labs: https://software-dl.ti.com/processor-sdk-linux/esd/AM64X/08_06_00_42/exports/docs/common/PRU-ICSS/PRU-Getting-Started-Labs_Lab1.html

Regards,

Nick

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AM6442: PRU ICSS PWM Linux Driver