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AM3352 Board Bring up issue

Hi,

We need help in debugging our AM3352 custom board.
The board powers up properly but we are not able to debug the board.

We have modified the Starterkit GEL file to our DDR3 device.
Whenever we try to run the GEL script CCS gives below error.

CortxA8: Trouble Writing Memory Block at 0x4c0000e4 on Page 0 of Length 0x4:
(Error -1065 @ 0x4C0000E4) Unable to access device memory.

It seems the GEL script is struck at writing the register "EMIF_DDR_PHY_CTRL_1_REG".

Searching through several E2E posts we have tried some procedures like
Run->Reset->CPU Reset(HW) and then run the script or disabling the MMU, data cache etc.
But nothing seems to be working.

In the GEL script tried to Comment out the "EMIF_DDR_PHY_CTRL_1_REG" register write
and tried to access the 0x4C0000E4 memory, but it says Target failed to read

> > 4c0000e0:   Target failed to read 0x4C0000E0 [code=0x1]
> > 4c0000e4:   Target failed to read 0x4C0000E4 [code=0x1]

Could you please let us know what could be the reason that GEL file is
not able to execute EMIF_DDR_PHY_CTRL_1_REG write?

Best Regards
Kummi

  • In reply to Biser Gatchev-XID:

    Please note that you cannot submit schematics for review on this forum. There is an official review request procedure, which must be done through your local TI representative/FAE. Schematic reviews are done by a different team.

    However from what I saw you have a signal named VRTC connected to RTC_KALDO_EN and the PMIC power rail is named PMIC_VRTC. As the schematic is not in text-searchable PDF format I cannot find if these two rails are the same. I think you should search in this direction.

     

    Best Regards
    Biser
  • In reply to Biser Gatchev-XID:

    Hi Biser,

    Thank you so much for the information.
    I am sorry for the schematics review. As the production time
    is nearby your suggestions are very helpful.

    I shall check on this connection.
    These two rails are same.

    Actually the RTC_KALDO_EN pin is connected to VPMIC_VRTC
    this VPMIC_VRTC comes from the PMIC(TPS65910) VRTC pin.
    And VPMIC_VRTC is also connected to VDDS_RTC.

    With regards to "CAP_VDD_RTC", is it OK to connect it
    directly to VDD_CORE(1.1V) when the RTC feature disabled?

    Best Regards
    Kummi
  • In reply to Kummi:

    "With regards to "CAP_VDD_RTC", is it OK to connect it directly to VDD_CORE(1.1V) when the RTC feature disabled?"

    Yes, this is the correct connection.

     

    Best Regards
    Biser

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