i.MX Processors中的主题 Re: LPDDR Testing

LPDDR Testing

Embedded-world — Wed, 22 Jan 2025 15:24:47 GMT

Dear Experts,

I am working with the Maaxboard OSM93 (Avnet) and testing the LPDDR scenarios. While testing the LPDDR, the operational test results for the following scenarios have failed:

BIST - 1 write - 1 read turnaround
BIST - 2 write - 2 read turnaround
BIST - 4 write - 4 read turnaround

How can I debug these scenarios? What configurations do I need to change? Please suggest the steps to pass all the test scenarios.

Configuration:
Operational TestingDevice Configuration

Thanks & Regards,

Ravikumar

Re: LPDDR Testing

JorgeCas — Wed, 22 Jan 2025 18:12:05 GMT

Hello,

Please try again selecting the exact i.MX part number and DDR technology, according to the board web page, it has a LPDDR4, and you are running the test for a LPDDR4X.

Best regards.

Re: LPDDR Testing

Embedded-world — Thu, 23 Jan 2025 09:29:17 GMT

Hi @JorgeCas ,

I used the same LPDDR4 Configuration w.r.t specific maaxboard osm93 board but still in the DDR Tool (v24.12). As I mentioned before, all three test scenarios are failed to pass. So, whether all turnaround cases are mandatory to pass ? Or What does the configuration do I need to follow for that to pass? Or By default, those test scenarios are are failed ? or Only Read-write compare. Walking Zeros, Walking Ones works/get pass because in the User guide of the DDR Tool mentioned these three, so Please clarify the doubts.

Thanks & Regards
Ravikumar

Re: LPDDR Testing

JorgeCas — Thu, 23 Jan 2025 16:08:28 GMT

Hello,

Yes, it is mandatory to pass all the tests in DDR stress. It seems that it is not passing Write-Read-Compare test.

Please check that you are entering the corresponding DDR features, PMIC and UART settings.

Could you please share the board characteristics, .mex file and log?

Best regards.

Re: LPDDR Testing

Embedded-world — Fri, 24 Jan 2025 02:44:24 GMT

Hi @JorgeCas,

As per the Avnet board, 100% the test is passing with Read - Write compare scenario.

But it's not passing the all other turnaround test case.

Thanks & Regards
Ravikumar