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/Documentation/arch/arm/stm32/
Dstm32-dma-mdma-chaining.rst4 STM32 DMA-MDMA chaining
11 This document describes the STM32 DMA-MDMA chaining feature. But before going
17 STM32MP1 SoCs embed both STM32 DMA and STM32 MDMA controllers. STM32 DMA
33 **STM32 MDMA**
35 STM32 MDMA (Master DMA) is mainly used to manage direct data transfers between
38 interfaces for AHB peripherals, while the STM32 MDMA acts as a second level
39 DMA with better performance. As a AXI/AHB master, STM32 MDMA can take control
46 STM32 DMA-MDMA chaining feature relies on the strengths of STM32 DMA and
47 STM32 MDMA controllers.
52 counter is automatically reloaded. This allows the SW or the STM32 MDMA to
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/Documentation/devicetree/bindings/dma/stm32/
Dst,stm32-mdma.yaml4 $id: http://devicetree.org/schemas/dma/stm32/st,stm32-mdma.yaml#
7 title: STMicroelectronics STM32 MDMA Controller
10 The STM32 MDMA is a general-purpose direct memory access controller capable of
12 DMA clients connected to the STM32 MDMA controller must use the format
14 a phandle to the MDMA controller plus the following five integer cells:
43 0x00: Each MDMA request triggers a buffer transfer (max 128 bytes)
44 0x1: Each MDMA request triggers a block transfer (max 64K bytes)
45 0x2: Each MDMA request triggers a repeated block transfer
46 0x3: Each MDMA request triggers a linked list transfer
48 if no HW ack signal is used by the MDMA client
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/Documentation/devicetree/bindings/dma/
Dingenic,dma.yaml24 - ingenic,jz4760-mdma
27 - ingenic,jz4760b-mdma
/Documentation/arch/arm/
Dindex.rst63 stm32/stm32-dma-mdma-chaining
/Documentation/devicetree/bindings/iommu/
Dti,omap-iommu.txt28 instance number should be 0 for DSP MDMA MMUs and 1 for