Fix spi engine offload

ahaslam2 commented 2 weeks ago

The bytes that are transfered on dma per sample depend on the DMA_DATA_WIDTH_SRC of the dma IP not on the data_width bytes sent by the spi_engine on the spi bus.

PR Type

[x] Bug fix (change that fixes an issue)
[ ] New feature (change that adds new functionality)
[ ] Breaking change (has dependencies in other repos or will cause CI to fail)

PR Checklist

[x] I have followed the Coding style guidelines
[x] I have performed a self-review of the changes
[ ] I have commented my code, at least hard-to-understand parts
[ ] I have build all projects affected by the changes in this PR
[x] I have tested in hardware affected projects, at the relevant boards
[x] I have signed off all commits from this PR
[ ] I have updated the documentation (wiki pages, ReadMe etc), if applies

ahaslam2 commented 2 weeks ago

Somebody with good insight of the axi_dma can confirm this is correct? i will have to go and see other users of offload_xfer if these changes make sense.

dbogdan commented 2 weeks ago

I think the change makes sense.

ahaslam2 commented 2 weeks ago

@dbogdan i need to check other parts using spi_engine_offload_transfer..

also, just realized that rx_transfer is using a "4" instead of dma size. will fix

analogdevicesinc / no-OS