<p><span class="h-card" translate="no"><a href="https://mastodon.social/@whitequark" class="u-url mention">@<span>whitequark</span></a></span> I continue to be cranky that the STM32H735 AHB2 (which as far as I can see is only used by crypto IPs) is not reachable by any DMA that can access the DTCM.</p><p>So there's no way to do a cache coherent DMA of data from the TCM to crypto or back.</p><p>Even with cache, DTCM is faster than AXI RAM by enough of a margin that all of my firmware is keeping Ethernet frame data in it.</p><p>Long term I think I'm going to end up pushing more and more stuff to FPGA offload and having the MCU not actually handling a lot of datapath.</p><p>But as you can see here, it's not half bad at doing the datapath either.</p>
