mirror of
https://github.com/torvalds/linux.git
synced 2024-12-22 10:56:40 +00:00
d307e01e41
rockchip,capture-channels: max capture channels, 2 channels default. Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com> Signed-off-by: Mark Brown <broonie@kernel.org>
36 lines
1.3 KiB
Plaintext
36 lines
1.3 KiB
Plaintext
* Rockchip 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
|
|
- "rockchip,rk3066-i2s": for rk3066
|
|
- "rockchip,rk3188-i2s", "rockchip,rk3066-i2s": for rk3188
|
|
- "rockchip,rk3288-i2s", "rockchip,rk3066-i2s": for rk3288
|
|
- 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:
|
|
- "i2s_hclk": clock for I2S BUS
|
|
- "i2s_clk" : clock for I2S controller
|
|
- rockchip,capture-channels: max capture channels, if not set, 2 channels default.
|
|
|
|
Example for rk3288 I2S controller:
|
|
|
|
i2s@ff890000 {
|
|
compatible = "rockchip,rk3288-i2s", "rockchip,rk3066-i2s";
|
|
reg = <0xff890000 0x10000>;
|
|
interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
|
|
dmas = <&pdma1 0>, <&pdma1 1>;
|
|
dma-names = "tx", "rx";
|
|
clock-names = "i2s_hclk", "i2s_clk";
|
|
clocks = <&cru HCLK_I2S0>, <&cru SCLK_I2S0>;
|
|
rockchip,capture-channels = <2>;
|
|
};
|