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question about workaround for P2010 DDR errata A-004508

Question asked by Zuo Yun on Nov 6, 2017
Latest reply on Nov 9, 2017 by Zuo Yun

Hi folks,

 

I'm working on a vxWorks bsp based on P2010, and I'm try to implement the workaround for errata A-004508 of DDR controller. The workaround for errata A-004508 described in P2020CE_RevCC.pdf as the following:

Workaround: When the DDR controller is initialized below a junction temperature of 0°C and then operated
above a junction temperature of 65°C without a reset, then software should set bit 22 at the
CCSR register offset 0x0_2F08 before the DDR controller is enabled. This ensures the DDR
controller operates across the full, supported industrial temperature range.

 

My question is:

   Since it's hard for the software to judge both the initialized temperature and the operation temperature of DDR controller, can the software implement the workaround without judge the temperature condition? In other word, can I implement the workaround unconditionally?

 

Thanks and Regards

Yun

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