| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | * Freescale MPC512x and MPC8308 DMA Controller |
| 2 | |
| 3 | The DMA controller in Freescale MPC512x and MPC8308 SoCs can move |
| 4 | blocks of memory contents between memory and peripherals or |
| 5 | from memory to memory. |
| 6 | |
| 7 | Refer to "Generic DMA Controller and DMA request bindings" in |
| 8 | the dma/dma.txt file for a more detailed description of binding. |
| 9 | |
| 10 | Required properties: |
| 11 | - compatible: should be "fsl,mpc5121-dma" or "fsl,mpc8308-dma"; |
| 12 | - reg: should contain the DMA controller registers location and length; |
| 13 | - interrupt for the DMA controller: syntax of interrupt client node |
| 14 | is described in interrupt-controller/interrupts.txt file. |
| 15 | - #dma-cells: the length of the DMA specifier, must be <1>. |
| 16 | Each channel of this DMA controller has a peripheral request line, |
| 17 | the assignment is fixed in hardware. This one cell |
| 18 | in dmas property of a client device represents the channel number. |
| 19 | |
| 20 | Example: |
| 21 | |
| 22 | dma0: dma@14000 { |
| 23 | compatible = "fsl,mpc5121-dma"; |
| 24 | reg = <0x14000 0x1800>; |
| 25 | interrupts = <65 0x8>; |
| 26 | #dma-cells = <1>; |
| 27 | }; |
| 28 | |
| 29 | DMA clients must use the format described in dma/dma.txt file. |