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-* Atmel Extensible Direct Memory Access Controller (XDMAC)
-
-* XDMA Controller
-Required properties:
-- compatible: Should be "atmel,sama5d4-dma", "microchip,sam9x60-dma" or
- "microchip,sama7g5-dma" or
- "microchip,sam9x7-dma", "atmel,sama5d4-dma".
-- reg: Should contain DMA registers location and length.
-- interrupts: Should contain DMA interrupt.
-- #dma-cells: Must be <1>, used to represent the number of integer cells in
-the dmas property of client devices.
- - The 1st cell specifies the channel configuration register:
- - bit 13: SIF, source interface identifier, used to get the memory
- interface identifier,
- - bit 14: DIF, destination interface identifier, used to get the peripheral
- interface identifier,
- - bit 30-24: PERID, peripheral identifier.
-
-Example:
-
-dma1: dma-controller@f0004000 {
- compatible = "atmel,sama5d4-dma";
- reg = <0xf0004000 0x200>;
- interrupts = <50 4 0>;
- #dma-cells = <1>;
-};
-
-
-* DMA clients
-DMA clients connected to the Atmel XDMA controller must use the format
-described in the dma.txt file, using a one-cell specifier for each channel.
-The two cells in order are:
-1. A phandle pointing to the DMA controller.
-2. Channel configuration register. Configurable fields are:
- - bit 13: SIF, source interface identifier, used to get the memory
- interface identifier,
- - bit 14: DIF, destination interface identifier, used to get the peripheral
- interface identifier,
- - bit 30-24: PERID, peripheral identifier.
-
-Example:
-
-i2c2: i2c@f8024000 {
- compatible = "atmel,at91sam9x5-i2c";
- reg = <0xf8024000 0x4000>;
- interrupts = <34 4 6>;
- dmas = <&dma1
- (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
- | AT91_XDMAC_DT_PERID(6))>,
- <&dma1
- (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
- | AT91_XDMAC_DT_PERID(7))>;
- dma-names = "tx", "rx";
-};