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author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-10-20 00:10:27 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-10-20 00:10:27 -0300 |
commit | d0b2f91bede3bd5e3d24dd6803e56eee959c1797 (patch) | |
tree | 7fee4ab0509879c373c4f2cbd5b8a5be5b4041ee /Documentation/devicetree/bindings/sound/sun4i-i2s.txt | |
parent | e914f8eb445e8f74b00303c19c2ffceaedd16a05 (diff) |
Linux-libre 4.8.2-gnupck-4.8.2-gnu
Diffstat (limited to 'Documentation/devicetree/bindings/sound/sun4i-i2s.txt')
-rw-r--r-- | Documentation/devicetree/bindings/sound/sun4i-i2s.txt | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/sun4i-i2s.txt b/Documentation/devicetree/bindings/sound/sun4i-i2s.txt new file mode 100644 index 000000000..7b526ec64 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/sun4i-i2s.txt @@ -0,0 +1,34 @@ +* Allwinner A10 I2S controller + +The I2S bus (Inter-IC sound bus) is a serial link for digital +audio data transfer between devices in the system. + +Required properties: + +- compatible: should be one of the followings + - "allwinner,sun4i-a10-i2s" +- reg: physical base address of the controller and length of memory mapped + region. +- interrupts: should contain the I2S interrupt. +- dmas: DMA specifiers for tx and rx dma. See the DMA client binding, + Documentation/devicetree/bindings/dma/dma.txt +- dma-names: should include "tx" and "rx". +- clocks: a list of phandle + clock-specifer pairs, one for each entry in clock-names. +- clock-names: should contain followings: + - "apb" : clock for the I2S bus interface + - "mod" : module clock for the I2S controller +- #sound-dai-cells : Must be equal to 0 + +Example: + +i2s0: i2s@01c22400 { + #sound-dai-cells = <0>; + compatible = "allwinner,sun4i-a10-i2s"; + reg = <0x01c22400 0x400>; + interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&apb0_gates 3>, <&i2s0_clk>; + clock-names = "apb", "mod"; + dmas = <&dma SUN4I_DMA_NORMAL 3>, + <&dma SUN4I_DMA_NORMAL 3>; + dma-names = "rx", "tx"; +}; |