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question about memory for linux kernel in DM8168

1330hayacool7102
Guru 10655 points

question:
1. why TI provide different memory map (128MB and 256MB) for linux kernel? and why the performance like CPU loading will be different? Basically, the utilized resource should be the same.
2. why the operating frequency for DDR3 in EVM is 800MHz instead of 1600MHz? why the ARM is 1000MHz instead of 1200MHz. it seems current setting mis-match the spec TI declared.

  • 0
    Guru 10655 points

    Any one know that?

  • 0
    TI__Mastermind 18260 points

    Medwin Tsai said:
    1. why TI provide different memory map (128MB and 256MB) for linux kernel? and why the performance like CPU loading will be different? Basically, the utilized resource should be the same.

    What memory map are you referring to?

    What difference in CPU loading do you observe?

    Medwin Tsai said:
    2. why the operating frequency for DDR3 in EVM is 800MHz instead of 1600MHz? why the ARM is 1000MHz instead of 1200MHz. it seems current setting mis-match the spec TI declared.

    This question doesn't belong in the Linux forum.  You would probably get better support from a hardware-oriented forum.

    Regards,

    - Rob