topic Clarification on LPSPI Usage in MIMX9352CVVXM Processor in i.MX Processors

Clarification on LPSPI Usage in MIMX9352CVVXM Processor

Embedded-world — Sat, 01 Mar 2025 10:08:45 GMT

Dear Experts,

Please clarify the following doubts:

1. What is the maximum number of LPSPI instances that can be used simultaneously on the MIMX9352CVVXM processor?

2. We attempted to assign all available LPSPI instances (8 in total), but LPSPI4 and LPSPI5 signals appear to have the same functionality, preventing us from using all 8 LPSPI instances at the same time. How can we enable all LPSPI instances using the Config Tool?

3. Please provide reference .dts file entries for enabling all LPSPI signals.

Best regards,
Ronad

Re: Clarification on LPSPI Usage in MIMX9352CVVXM Processor

Chavira — Mon, 03 Mar 2025 15:27:48 GMT

Hi @Embedded-world!

The iMX93 has the power to manage the 8 LPSPI at the same time, unfortunately the LPSPI4 and LPSPI5 share the same pins.

To solve the problem I can propose the next solutions:

1) Use GPIOS as a chip select to control 2 devices using one SPI BUS.

2) You can use the SC18IS606 to control a new SPI device (The SC18IS606 is a i2C to SPI converter)

What board are you using?

I can help you configuring the dts file directly in your actual dts, please share the file.

Best Regards!

Chavira