FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/dma/nvidia,tegra210-adma.txt

     * NVIDIA Tegra Audio DMA (ADMA) controller
     
     The Tegra Audio DMA controller that is used for transferring data
     between system memory and the Audio Processing Engine (APE).
     
     Required properties:
     - compatible: Should contain one of the following:
       - "nvidia,tegra210-adma": for Tegra210
       - "nvidia,tegra186-adma": for Tegra186 and Tegra194
    - reg: Should contain DMA registers location and length. This should be
      a single entry that includes all of the per-channel registers in one
      contiguous bank.
    - interrupts: Should contain all of the per-channel DMA interrupts in
      ascending order with respect to the DMA channel index.
    - clocks: Must contain one entry for the ADMA module clock
      (TEGRA210_CLK_D_AUDIO).
    - clock-names: Must contain the name "d_audio" for the corresponding
      'clocks' entry.
    - #dma-cells : Must be 1. The first cell denotes the receive/transmit
      request number and should be between 1 and the maximum number of
      requests supported. This value corresponds to the RX/TX_REQUEST_SELECT
      fields in the ADMA_CHn_CTRL register.
    
    
    Example:
    
    adma: dma@702e2000 {
            compatible = "nvidia,tegra210-adma";
            reg = <0x0 0x702e2000 0x0 0x2000>;
            interrupt-parent = <&tegra_agic>;
            interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>,
                         <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
            clocks = <&tegra_car TEGRA210_CLK_D_AUDIO>;
            clock-names = "d_audio";
            #dma-cells = <1>;
    };

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