61 lines
1.7 KiB
Plaintext
61 lines
1.7 KiB
Plaintext
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* Freescale MXS DMA
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Required properties:
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- compatible : Should be "fsl,<chip>-dma-apbh" or "fsl,<chip>-dma-apbx"
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- reg : Should contain registers location and length
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- interrupts : Should contain the interrupt numbers of DMA channels.
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If a channel is empty/reserved, 0 should be filled in place.
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- #dma-cells : Must be <1>. The number cell specifies the channel ID.
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- dma-channels : Number of channels supported by the DMA controller
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Optional properties:
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- interrupt-names : Name of DMA channel interrupts
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Supported chips:
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imx23, imx28.
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Examples:
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dma_apbh: dma-apbh@80004000 {
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compatible = "fsl,imx28-dma-apbh";
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reg = <0x80004000 0x2000>;
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interrupts = <82 83 84 85
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88 88 88 88
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88 88 88 88
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87 86 0 0>;
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interrupt-names = "ssp0", "ssp1", "ssp2", "ssp3",
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"gpmi0", "gmpi1", "gpmi2", "gmpi3",
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"gpmi4", "gmpi5", "gpmi6", "gmpi7",
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"hsadc", "lcdif", "empty", "empty";
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#dma-cells = <1>;
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dma-channels = <16>;
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};
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dma_apbx: dma-apbx@80024000 {
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compatible = "fsl,imx28-dma-apbx";
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reg = <0x80024000 0x2000>;
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interrupts = <78 79 66 0
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80 81 68 69
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70 71 72 73
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74 75 76 77>;
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interrupt-names = "auart4-rx", "auart4-tx", "spdif-tx", "empty",
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"saif0", "saif1", "i2c0", "i2c1",
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"auart0-rx", "auart0-tx", "auart1-rx", "auart1-tx",
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"auart2-rx", "auart2-tx", "auart3-rx", "auart3-tx";
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#dma-cells = <1>;
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dma-channels = <16>;
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};
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DMA clients connected to the MXS DMA controller must use the format
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described in the dma.txt file.
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Examples:
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auart0: serial@8006a000 {
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compatible = "fsl,imx28-auart", "fsl,imx23-auart";
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reg = <0x8006a000 0x2000>;
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interrupts = <112>;
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dmas = <&dma_apbx 8>, <&dma_apbx 9>;
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dma-names = "rx", "tx";
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};
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