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Question about BOOT_CFGx in i.MX6DL

Question asked by ko-hey on Dec 13, 2017
Latest reply on Dec 25, 2017 by ko-hey

Hi all

 

I have some question about BOOT_CFGx registers in i.MX6DL.

I can't understand the purpose and how to select it.

So please tell me following questions.

 

Q1."SD Calibration Step inn P.335 Table5-5 BOOT_CFG2[7:6]"

 

What is the purpose of SD Calibration Step ?

I can't imagine the calibration for SD.

 

What kind of information do you choose based on ?

 

Q2. "DDR Memory Map default config in P.335 Table5-5 BOOT_CFG3[5:4]"

 

What is the purpose of the register ?

 

What kind of information do you choose based on ?

 

Q3."DLL Override in P.335 Table5-5 BOOT_CFG2[2]"

 

What is the Boot ROM default value ?

What kind of information do you choose based on ?

 

 

Ko-hey

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