| * ZTE ZX296702 DMA controller |
| |
| Required properties: |
| - compatible: Should be "zte,zx296702-dma" |
| - reg: Should contain DMA registers location and length. |
| - interrupts: Should contain one interrupt shared by all channel |
| - #dma-cells: see dma.txt, should be 1, para number |
| - dma-channels: physical channels supported |
| - dma-requests: virtual channels supported, each virtual channel |
| have specific request line |
| - clocks: clock required |
| |
| Example: |
| |
| Controller: |
| dma: dma-controller@0x09c00000{ |
| compatible = "zte,zx296702-dma"; |
| reg = <0x09c00000 0x1000>; |
| clocks = <&topclk ZX296702_DMA_ACLK>; |
| interrupts = <GIC_SPI 66 IRQ_TYPE_LEVEL_HIGH>; |
| #dma-cells = <1>; |
| dma-channels = <24>; |
| dma-requests = <24>; |
| }; |
| |
| Client: |
| Use specific request line passing from dmax |
| For example, spdif0 tx channel request line is 4 |
| spdif0: spdif0@0b004000 { |
| #sound-dai-cells = <0>; |
| compatible = "zte,zx296702-spdif"; |
| reg = <0x0b004000 0x1000>; |
| clocks = <&lsp0clk ZX296702_SPDIF0_DIV>; |
| clock-names = "tx"; |
| interrupts = <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>; |
| dmas = <&dma 4>; |
| dma-names = "tx"; |
| } |
