Commit | Line | Data |
---|---|---|
f4cb295b JH |
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 | }; |