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Original question:

TDA4VM: How to decrease LPDDR4 frequency of TDA4?

TDA4VM: LPDDR4 training issue

felix xu
Intellectual 500 points

Part Number: TDA4VM

Dear experts:

As I stated in previous E2E ticket, (  https://e2e.ti.com/support/processors/f/791/t/899955after we decrease LPDDR4 to 3200MT/s, everything works well.

And we did some parameter tuning in AM752x_DRA82x_TDA4x_DDRSS_RegConfigTool.xlsm to test 3733MT/s, but we got no luck, none of them works, U-Boot still hangs when jumping from SRAM to DDR RAM, and DDRSS driver in U-Boot reports no error.

Please give me some help about how to debug this issue and how to adjust parameters in AM752x_DRA82x_TDA4x_DDRSS_RegConfigTool.xlsm to match our PCB.

Thanks.