After the OTG repeatedly switches the host and slave states, the HOST is no longer recognized

I think I have encountered some difficult problems. I hope the engineer of ST can help me.I configured SPI+DMA to CM4 and then created two rPMSGs. RPMSg0 transmitted the data to CA7 in real time and RPMSg1 transmitted the heartbeat signal.When CA7 re...

I have a new problem about serial communication. When UART sends and receives data quickly, there will be FIFO error.This is my code 

hi； ​How to configure the Mclk device tree for I2S.

I designed a board based on the schematic of dk1, but I2C failed on HDMI output