AM625: Update the PLL driver in TIFS boot flow to follow correct sequence

Tony Tang

Mastermind 29172 points

Part Number: AM625

Tool/software:

In SDK10_00_07_04 release notes: SYSFW-7485: Update the PLL driver in TIFS boot flow to follow correct sequence

Before applying the fix methods, customer would like to know more details about item SYSFW-7485:

What condition will trigger this issue?
What is the fail rate?
What is the behavior?
How to verify if it is resolved after methods applied?

1 month ago

0 Hong Guan64 1 month ago

TI__Guru 69190 points

Hi Tony,
Here're some reference on PLL Programing Sequence Update
- AM62x Errata
i2424 — PLL: PLL Programming Sequence May Introduce PLL Instability
- Linux SDK
https://software-dl.ti.com/processor-sdk-linux/esd/AM62X/10_00_07_04/exports/docs/devices/AM62X/linux/Release_Specific_Migration_Guide.html#pll-programing-sequence-update-to-avoid-pll-instability
Best,
-Hong

0 Tony Tang 1 month ago in reply to Hong Guan64

TI__Mastermind 29172 points

Hong,

I knew this and knew how to do, customer wants to know more details to assess the risk. they shipped more than 100k units already, did not find one fail case. need a reason for the team to make decision. not just for one person.

0 Hong Guan64 29 days ago in reply to Tony Tang

TI__Guru 69190 points

Hi Tony,
I sent an email with i2424 Internal FAQ. Let's use email for follow-up discussions.
Best,
-Hong

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AM625: Update the PLL driver in TIFS boot flow to follow correct sequence