On Wed, Jun 01, 2016 at 07:54:27PM +0200, Maxime Ripard wrote:
Introduce the device tree binding for the I2S controller found in the Allwinner A10 and later SoCs.
Signed-off-by: Maxime Ripard maxime.ripard@free-electrons.com
.../devicetree/bindings/sound/sun4i-i2s.txt | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/sun4i-i2s.txt
diff --git a/Documentation/devicetree/bindings/sound/sun4i-i2s.txt b/Documentation/devicetree/bindings/sound/sun4i-i2s.txt new file mode 100644 index 000000000000..365ca4eede5f --- /dev/null +++ b/Documentation/devicetree/bindings/sound/sun4i-i2s.txt @@ -0,0 +1,33 @@ +* 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
+Example:
+i2s0: i2s@01c22400 {
- #sound-dai-cells = <0>;
This is missing from the property list.
- 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";
+};
2.8.3