i.MX Processors中的主题 Re: DDR Register Programming Aid (RPA) for SCFW 1.7.0

DDR Register Programming Aid (RPA) for SCFW 1.7.0

philippe_schenk — Tue, 12 Jan 2021 15:19:23 GMT

I cant find the RPA spreadsheet versions that were used to generate RAM-timings for the i.MX 8QM and i.MX 8QXP Mek boards. The version I see in SCFW 1.7.0 are:

i.MX 8QM: Version 23
i.MX 8QXP: Version 16

However I can't find any references on the publishing pages for the RPA's:
https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/i-MX-8-8X-Family-DDR-Tools-Release/ta-p/1121519
https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/i-MX8QXP-DXP-DX-DDR-Register-Programming-Aid-RPA/ta-p/1166302
https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/i-MX8QM-DDR-Register-Programming-Aid-RPA/ta-p/1166307

I am concerned that I have to do the work twice once the new versions get released that they state to be a "have-to" for SCFW 1.7.0

My Questions:

1. Which versions of RPA spreadsheets are needed for i.MX8 QM and i.MX 8QXP/DXP on SCFW 1.7.0?
2. Are RPA spreadsheets version 15 (i.MX 8QXP/DXP) and version 22 (i.MX8 QM) compatible with SCFW v 1.7.0?
3. Is it possible to publish those RPA's?

Best Regards
Philippe Schenker

Re: DDR Register Programming Aid (RPA) for SCFW 1.7.0

philippe_schenk — Thu, 14 Jan 2021 16:33:48 GMT

In the meantime I tried v15 (the currently released RPA) on the i.MX8QXP MEK with SCFW 1.5.1, everything works.
Used RPA: MX8QXP_C0_B0_LPDDR4_RPA_1.2GHz_v15.xlsx

I then tried the exact same values from the v15 for SCFW 1.7.0 on the same MEK which resulted in the same error I see on our hardware.

We are blocked now by this issue could you please release the new RPA's needed for SCFW 1.7.0 asap?

Thanks

Re: DDR Register Programming Aid (RPA) for SCFW 1.7.0

nxf63675 — Fri, 15 Jan 2021 23:11:55 GMT

Hi Philippe,

For the moment the latest RPAs (aligned to SCFW 1.7.0) are not released publicly yet as the engineering teams are working with marketing on communication. I cannot speak to the timeline or ETA when the RPAs will be released.

In the meantime, FWIW, we re-pro'd the issue why SCFW 1.7.0 does not work with the previous RPA/DCD (QXP v15). This line is the culprit:

DATA 4 0xff190000 0x00000CC8 /* DRC0 bringup */

Sorry for any inconvenience that this may cause you.

Regards,

Israel H.

Re: DDR Register Programming Aid (RPA) for SCFW 1.7.0

philippe_schenk — Tue, 19 Jan 2021 13:54:10 GMT

Hi Israel,

Thanks for your information. I spent now (too much) time with that issue and I just wanted to mention for everyone else that steps by this issue, that also some other register changes not only

DATA 4 0xff190000 0x00000CC8 /* DRC0 bringup */

are needed. Just deleting that line alone is not helping (but it is necessary with some other bit-flips).

Best Regards,

Philippe