Instabilities observed while resuming from IO Only plus DDR mode

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    • Type: Bug
    • Resolution: Fixed
    • Priority: High

      There were instabilities in the DDR data access after resuming from I/O Only plus DDR low power mode.
      This is fixed by adding the workaround patches in ti-u-boot repository.
      -log-
      U-Boot SPL 2024.04-00024-ge9f952cd85c-dirty (Nov 29 2024 - 13:56:15 +0530)
      SYSFW ABI: 4.0 (firmware rev 0x000a '10.1.8-v10.01.08-1-g04567+ (Fie')
      ti_sci system-controller@44043000: ti_sci_get_response: Message receive failed. ret = -110
      ti_sci system-controller@44043000: Message not acknowledged
      ti_sci system-controller@44043000: Failed restoring context -19
      Failed to restore context from DDR -19 a5a5a5a5
      Failed to restore context from 0xa5a5a5a5

      The DDR contents are not reflecting properly.
      Fix details:

      https://git.ti.com/cgit/ti-u-boot/ti-u-boot/commit/?h=ti-u-boot-2025.01-next&id=d451a5176fd74ef9862cc13fa720fbac31705310,
      https://git.ti.com/cgit/ti-u-boot/ti-u-boot/commit/?h=ti-u-boot-2025.01-next&id=1158366fed009c5b9ac04a9d98cbd0159eef7a5c,
      https://git.ti.com/cgit/ti-u-boot/ti-u-boot/commit/?h=ti-u-boot-2025.01-next&id=be35c0d8d6e850b39dc89c837a56abdf049ad00a

            Assignee:
            TI User
            Reporter:
            TI User
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              Created:
              Updated:
              Resolved:

                Connection: Intermediate to External PROD System
                EXTSYNC-5075 - Instabilities observed while resumi...
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