projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| dc772a4c JN |
1 | ZTE ZX296702 I2S controller |
| 2 | ||
| 3 | Required properties: | |
| 4 | - compatible : Must be "zte,zx296702-i2s" | |
| 5 | - reg : Must contain I2S core's registers location and length | |
| 6 | - clocks : Pairs of phandle and specifier referencing the controller's clocks. | |
| 7 | - clock-names: "tx" for the clock to the I2S interface. | |
| 8 | - dmas: Pairs of phandle and specifier for the DMA channel that is used by | |
| 9 | the core. The core expects two dma channels for transmit. | |
| 10 | - dma-names : Must be "tx" and "rx" | |
| 11 | ||
| 12 | For more details on the 'dma', 'dma-names', 'clock' and 'clock-names' properties | |
| 13 | please check: | |
| 14 | * resource-names.txt | |
| 15 | * clock/clock-bindings.txt | |
| 16 | * dma/dma.txt | |
| 17 | ||
| 18 | Example: | |
| 19 | i2s0: i2s0@0b005000 { | |
| 20 | #sound-dai-cells = <0>; | |
| 21 | compatible = "zte,zx296702-i2s"; | |
| 22 | reg = <0x0b005000 0x1000>; | |
| 23 | clocks = <&lsp0clk ZX296702_I2S0_DIV>; | |
| 24 | clock-names = "tx"; | |
| 25 | interrupts = <GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>; | |
| 26 | dmas = <&dma 5>, <&dma 6>; | |
| 27 | dma-names = "tx", "rx"; | |
| 28 | status = "okay"; | |
| 29 | }; | |
| 30 | ||
| 31 | sound { | |
| 32 | compatible = "simple-audio-card"; | |
| 33 | simple-audio-card,name = "zx296702_snd"; | |
| 34 | simple-audio-card,format = "left_j"; | |
| 35 | simple-audio-card,bitclock-master = <&sndcodec>; | |
| 36 | simple-audio-card,frame-master = <&sndcodec>; | |
| 37 | sndcpu: simple-audio-card,cpu { | |
| 38 | sound-dai = <&i2s0>; | |
| 39 | }; | |
| 40 | ||
| 41 | sndcodec: simple-audio-card,codec { | |
| 42 | sound-dai = <&acodec>; | |
| 43 | }; | |
| 44 | }; |