The table of DREQ signals (pages 61 & 62) contains two errors that have stemmed from incorrect information from Broadcom. SPI1 should not be used with DMA, and the DREQs labelled SPI1 TX and SPI1 RX should be labelled SPI3 TX and SPI3 RX. The discovery was made by forum user abqjln (https://forums.raspberrypi.com/viewtopic.php?t=357788), and has been confirmed by Broadcom.