tree 32f3b47e4a6876ee283138b171c78ce7f33d73c2
parent d79c4a7b1535787d4b002fc8b8a2412b7744da39
author Alex Van Damme <atv@google.com> 1757438117 -0700
committer Alex Van Damme <atv@google.com> 1757445971 -0700

feat(spi): Add packed write transaction support

This change introduces a "packed" write transaction to the SPI master,
allowing for a full TileLink write transaction to be sent in a single,
uninterrupted SPI burst. This significantly improves performance for
loading data to the device.

The following changes are included:

- A `packed_write_transaction` method has been added to the `SPIMaster`
  in `kelvin_test_utils/spi_master.py`.
- A new test case, `test_packed_write_transaction`, has been added to
  `tests/cocotb/tlul/test_spi_to_tlul.py` to validate the new
  functionality.
- The `poll_reg_for_value` method in `SPIMaster` has been refactored to
  correctly handle the pipelined nature of SPI reads, which was
  discovered during the development of the packed write feature.

Change-Id: I1703af4d083dc75781550a38c43ac726a40cfb43