On 17-01-22, 10:19, Tomasz Moń wrote: > Under heavy load resulting in high interrupt latencies, it is possible > for imx UART requests to completely fill DMA buffer. When DMA channel > is triggered and no SDMA owned buffer is available, SDMA stops. Thanks > to the autoRTS feature, there is no data loss due to the SDMA stop if > the UART is using hardware flow control. > > According to DMA Engine API Guide, DMA cyclic operation is performed > until explicitly stopped. Restart the buffer after handling channel loop > if the channel was stopped by SDMA. Applied all, thanks -- ~Vinod
