DRA787: the receive-only mode of MCSPI can not work with DMA + FIFO.

Simon yang

Part Number: DRA787

Tool/software:

Hello

we want to use receive-only mode of MCSPI with DMA+FIFO mode, but it can not work. Transmit-only, transmit-and-receive modes woks fine.

below is register dump for receive-only mode of MCSPI .

0 Brijesh Jadav 7 months ago

Hi Simon Yang,

Does it work fine without DMA? wondering if this is issue with DMA configuration or McSPI.

Regards,

Brijesh

0 Simon yang 7 months ago in reply to Brijesh Jadav

it work fine without DMA. we have to use DMA because the CPU load is high.

0 Brijesh Jadav 2 months ago in reply to Simon yang

Hi Simon,

Are there any further updates on this issue?

Regards,

Brijesh

0 Simon yang 2 months ago in reply to Brijesh Jadav

hi Brijesh:

NO, I did not fix the issue. just a workaround. always used tx and rx mode when use only receive mode, tx buffer same with rx buffer.

0 Brijesh Jadav 11 days ago in reply to Simon yang

Unlocking this thread, Simon, are you still facing this issue?

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