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-rw-r--r--dts/Bindings/dma/zxdma.txt38
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diff --git a/dts/Bindings/dma/zxdma.txt b/dts/Bindings/dma/zxdma.txt
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-* 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@09c00000{
- 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@b004000 {
- #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";
- }