1* NVIDIA Tegra Audio DMA (ADMA) controller 2 3The Tegra Audio DMA controller that is used for transferring data 4between system memory and the Audio Processing Engine (APE). 5 6Required properties: 7- compatible: Should contain one of the following: 8 - "nvidia,tegra210-adma": for Tegra210 9 - "nvidia,tegra186-adma": for Tegra186 and Tegra194 10- reg: Should contain DMA registers location and length. This should be 11 a single entry that includes all of the per-channel registers in one 12 contiguous bank. 13- interrupts: Should contain all of the per-channel DMA interrupts in 14 ascending order with respect to the DMA channel index. 15- clocks: Must contain one entry for the ADMA module clock 16 (TEGRA210_CLK_D_AUDIO). 17- clock-names: Must contain the name "d_audio" for the corresponding 18 'clocks' entry. 19- #dma-cells : Must be 1. The first cell denotes the receive/transmit 20 request number and should be between 1 and the maximum number of 21 requests supported. This value corresponds to the RX/TX_REQUEST_SELECT 22 fields in the ADMA_CHn_CTRL register. 23 24 25Example: 26 27adma: dma@702e2000 { 28 compatible = "nvidia,tegra210-adma"; 29 reg = <0x0 0x702e2000 0x0 0x2000>; 30 interrupt-parent = <&tegra_agic>; 31 interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>, 32 <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>, 33 <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>, 34 <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>, 35 <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>, 36 <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>, 37 <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>, 38 <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>, 39 <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>, 40 <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>, 41 <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>, 42 <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>, 43 <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>, 44 <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>, 45 <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>, 46 <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>, 47 <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>, 48 <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>, 49 <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>, 50 <GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH>, 51 <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>, 52 <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>; 53 clocks = <&tegra_car TEGRA210_CLK_D_AUDIO>; 54 clock-names = "d_audio"; 55 #dma-cells = <1>; 56}; 57