Lines Matching full:dma
1 # Xilinx AXI DMA configuration options
7 bool "Xilinx AXI DMA LogiCORE IP driver"
11 DMA driver for Xilinx AXI DMAs, usually found on FPGAs.
20 This allows the DMA to be used on architectures that do not provide
21 coherency for DMA accesses. If you are unsure whether you need this feature,
29 The Xilinx AXI DMA uses a ring of in-memory DMA descriptors which reference
39 The AXI DMA driver currently allocates a single DMA descriptor for each RX transfer,
58 Lock all interrupts of this DMA device when modifying channel data during dma_start.
60 once directly after initialization of the DMA).
63 bool "Lock IRQs of the DMA channel"
65 Only lock the interrupt of the DMA channel whose data are to be modified during dma_start.
72 int "Period of the timer used for polling the DMA in milliseconds"
76 On certain platforms (e.g., RISC-V), the DMA driver can sometimes miss interrupts.
77 This can cause the DMA driver to stop processing completed transactions.
78 In order to prevent this, the DMA driver periodically polls the DMA's registers and
101 This is useful in conjunction with DMA_XILINX_AXI_DMA_INTERRUPT_THRESHOLD - the DMA