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DS90UB948-Q1: DS90UB948 entering the Linux kernel to work after bootloader, the first byte read is correct, and the second byte read fails and reset.

Jon WANG
Intellectual 620 points
Part Number: DS90UB948-Q1

Tool/software:

Customers can read DS90UB948 during the bootloader phase, but when entering the Linux kernel to work after bootloader, the first byte read is correct, and the second byte read fails. Afterwards, DS90UB948 was reset to its default value.If DS90UB948 is reinitialized at this time, it can work normally, but reinitialization will result in a black screen display, which is not allowed.Could you pls help? Thanks.

  • 0
    TI__Mastermind 29815 points

    Hello Jon,

    I don't understand the issue? Is there a problem with the Ser or Des ? This seems to be related to how your Linux Kernel is handling I2C reads which is outside the scope of FPD-Link support. We don't use Linus, we use ALP software to communicate with our SERDES via I2C.

    Regards,
    Fadi A.