Need complete documentation for 8148 PRCM registers

Joe Cossette

The latest 8148 TRM (SPRUGZ8A) documentation I've got is from 14 November 2011-Revised July 2012, and it is still incomplete in regards to the PRCM registers, with many registers missing that are defined and used in the EZSDK U-Boot source code. The PLLSS Peripheral Registers have a number of "holes" in the register map. We need this missing documentation to complete our design.

over 13 years ago

0 Viet Dinh over 13 years ago

TI__Genius 15310 points

Hi Joe,

Could you kindly give us the list of missing registers for us to investigate? Thanks.

BR,

Viet

0 Joe Cossette over 13 years ago in reply to Viet Dinh

Intellectual 780 points

For PLLSS all you need to do is look on page 507 Table 2-50 for the missing holes. For instance, there is nothing there between offset 0x10 thru 0x40. From what I can determine it looks like there is at least one register at offset 0x14 that is being used in U-Boot to change CPU operating speed. There may also be others...I haven't done an exhaustive search.

0 Joe Cossette over 13 years ago in reply to Joe Cossette

Intellectual 780 points

Viet...hadn't heard anything from you in a week on this issue...what's up?

0 Viet Dinh over 13 years ago in reply to Joe Cossette

TI__Genius 15310 points

Hi Joe,

Sorry for the delay. I checked the spec and those registers are not supposed to be in TRM for sure. It is in the PSP probably due to porting it from other device. I am checking with the SW team to confirm it but it is slow.

BR,

Viet

0 Joe Cossette over 13 years ago in reply to Viet Dinh

Intellectual 780 points

Ok...no problem...I understand...just thought I'd give a tickle on it to see if anythings going on.

0 Deepu Raj over 13 years ago in reply to Joe Cossette

TI__Intellectual 925 points

Hi Joe,

I am not able find out the reference to the register offset in the PSP u-boot code. May be you are confused with the similar offset for the M2 divider for the PLLS for each module.

Is this the one you are referring to "#define ADPLLJ_MN2DIV 0x14". This is the only reference i can find similar to the one you are talking about.

Please send the more details about the Release version and file you find the reference so that i can help you more in this issue.

Regards,

Deepu Raj

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Need complete documentation for 8148 PRCM registers