i.MX ProcessorsのトピックIMX8 SDMA

IMX8 SDMA

HankChang989 — Wed, 26 Apr 2023 08:07:06 GMT

Can I use SDMA as PWM on IMX8?

Re: IMX8 SDMA

Sanket_Parekh — Thu, 27 Apr 2023 04:00:32 GMT

Hello @HankChang989 ,

I hope you are doing well.

Q)Can I use SDMA as PWM on IMX8?
->I have mentioned the list of the drivers that use SDMA and the number of SDMA physical channels used by each driver.

->A driver can specify the SDMA channel number that it wishes to use, static channel allocation, or can have the SDMA driver provide a free SDMA channel for the driver to use, dynamic channel allocation.
->Official NXP BSPs do not support sdma->pwm.

Please refer to the i.MX Reference Manual for more details.
https://www.nxp.com/docs/en/reference-manual/i.MX_Reference_Manual_Linux.pdf

Thanks & Regards,

Sanket Parekh

Re: IMX8 SDMA

ceggers — Thu, 27 Apr 2023 06:50:45 GMT

At least for i.MX6 and i.MX7, the table "SDMA event mapping" in the reference manual doesn't list the PWM units (I haven't any i.MX8 reference manual ready to hand). That means that the PWM controllers cannot signal any events to the SDMA.

Can you please provide some information about your intended application?

regards,
Christian

Re: IMX8 SDMA

Sanket_Parekh — Fri, 28 Apr 2023 04:59:06 GMT

Hello @ceggers ,

I hope you are doing well.

This issue is solved, Hnece for further any other queries Kindly raise another thread.
I'll Be happy to help you!

Thanks & Regards,

Sanket Parekh