Jon Hunter | f4cb295 | 2016-05-12 18:02:22 +0100 | [diff] [blame^] | 1 | * NVIDIA Tegra Audio DMA (ADMA) controller |
| 2 | |
| 3 | The Tegra Audio DMA controller that is used for transferring data |
| 4 | between system memory and the Audio Processing Engine (APE). |
| 5 | |
| 6 | Required properties: |
| 7 | - compatible: Must be "nvidia,tegra210-adma". |
| 8 | - reg: Should contain DMA registers location and length. This should be |
| 9 | a single entry that includes all of the per-channel registers in one |
| 10 | contiguous bank. |
| 11 | - interrupt-parent: Phandle to the interrupt parent controller. |
| 12 | - interrupts: Should contain all of the per-channel DMA interrupts in |
| 13 | ascending order with respect to the DMA channel index. |
| 14 | - clocks: Must contain one entry for the ADMA module clock |
| 15 | (TEGRA210_CLK_D_AUDIO). |
| 16 | - clock-names: Must contain the name "d_audio" for the corresponding |
| 17 | 'clocks' entry. |
| 18 | - #dma-cells : Must be 1. The first cell denotes the receive/transmit |
| 19 | request number and should be between 1 and the maximum number of |
| 20 | requests supported. This value corresponds to the RX/TX_REQUEST_SELECT |
| 21 | fields in the ADMA_CHn_CTRL register. |
| 22 | |
| 23 | |
| 24 | Example: |
| 25 | |
| 26 | adma: dma@702e2000 { |
| 27 | compatible = "nvidia,tegra210-adma"; |
| 28 | reg = <0x0 0x702e2000 0x0 0x2000>; |
| 29 | interrupt-parent = <&tegra_agic>; |
| 30 | interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>, |
| 31 | <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>, |
| 32 | <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>, |
| 33 | <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>, |
| 34 | <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>, |
| 35 | <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>, |
| 36 | <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>, |
| 37 | <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>, |
| 38 | <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>, |
| 39 | <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>, |
| 40 | <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>, |
| 41 | <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>, |
| 42 | <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>, |
| 43 | <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>, |
| 44 | <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>, |
| 45 | <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>, |
| 46 | <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>, |
| 47 | <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>, |
| 48 | <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>, |
| 49 | <GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH>, |
| 50 | <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>, |
| 51 | <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>; |
| 52 | clocks = <&tegra_car TEGRA210_CLK_D_AUDIO>; |
| 53 | clock-names = "d_audio"; |
| 54 | #dma-cells = <1>; |
| 55 | }; |