projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 51e5084e SS |
1 | * Rockchip SPDIF transceiver |
| 2 | ||
| 3 | The S/PDIF audio block is a stereo transceiver that allows the | |
| 4 | processor to receive and transmit digital audio via an coaxial cable or | |
| 5 | a fibre cable. | |
| 6 | ||
| 7 | Required properties: | |
| 8 | ||
| 9 | - compatible: should be one of the following: | |
| ab877394 SZ |
10 | - "rockchip,rk3066-spdif" |
| 11 | - "rockchip,rk3188-spdif" | |
| 12 | - "rockchip,rk3288-spdif" | |
| 13 | - "rockchip,rk3366-spdif" | |
| 14 | - "rockchip,rk3368-spdif" | |
| 15 | - "rockchip,rk3399-spdif" | |
| 51e5084e SS |
16 | - reg: physical base address of the controller and length of memory mapped |
| 17 | region. | |
| 18 | - interrupts: should contain the SPDIF interrupt. | |
| 51e5084e SS |
19 | - dmas: DMA specifiers for tx dma. See the DMA client binding, |
| 20 | Documentation/devicetree/bindings/dma/dma.txt | |
| 21 | - dma-names: should be "tx" | |
| 22 | - clocks: a list of phandle + clock-specifier pairs, one for each entry | |
| 23 | in clock-names. | |
| 24 | - clock-names: should contain following: | |
| 25 | - "hclk": clock for SPDIF controller | |
| 26 | - "mclk" : clock for SPDIF bus | |
| 27 | ||
| 28 | Required properties on RK3288: | |
| 29 | - rockchip,grf: the phandle of the syscon node for the general register | |
| 30 | file (GRF) | |
| 31 | ||
| 32 | Example for the rk3188 SPDIF controller: | |
| 33 | ||
| 34 | spdif: spdif@0x1011e000 { | |
| 35 | compatible = "rockchip,rk3188-spdif", "rockchip,rk3066-spdif"; | |
| 36 | reg = <0x1011e000 0x2000>; | |
| 37 | interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>; | |
| 51e5084e SS |
38 | dmas = <&dmac1_s 8>; |
| 39 | dma-names = "tx"; | |
| 40 | clock-names = "hclk", "mclk"; | |
| 41 | clocks = <&cru HCLK_SPDIF>, <&cru SCLK_SPDIF>; | |
| 42 | status = "disabled"; | |
| 43 | #sound-dai-cells = <0>; | |
| 44 | }; |