On 30-03-22, 12:36, Amelie Delaunay wrote: > STM32_MDMA_CCR bit[8] is used to enable Secure Mode (SM). If this bit is > set, it means that all the channel registers are write-protected. So the > channel is not available for Linux use. > > Add stm32_mdma_filter_fn() callback filter and give it to > __dma_request_chan (instead of dma_get_any_slave_channel()), to exclude the > channel if it is marked Secure. Applied, thanks -- ~Vinod
