And that's fixed it - you're a star :) That param/struct isn't present in 4.4.7, so I went poking through the driver code and hacked it in manually for the moment. However, adjusting it to 16 bits (with large DMA buffers in place) seems to have resolved the problem I was having. Got to go learn how ...

I'm building a firmware for the ESP32 (specifically ESP32-WROOM-32D) to drive WS2812 LEDs (and similar). I have a board on which the ESP32 is hooked up to a LAN8720 via RMII (external 50Mhz clock on GPIO0), and generally, all is well. ESP-IDF version is v4.4.7 at the moment. The board receives pixel...