mirror of https://gitee.com/openkylin/linux.git
35 lines
1.2 KiB
Plaintext
35 lines
1.2 KiB
Plaintext
ADI AXI-I2S controller
|
|
|
|
The core can be generated with transmit (playback), only receive
|
|
(capture) or both directions enabled.
|
|
|
|
Required properties:
|
|
- compatible : Must be "adi,axi-i2s-1.00.a"
|
|
- reg : Must contain I2S core's registers location and length
|
|
- clocks : Pairs of phandle and specifier referencing the controller's clocks.
|
|
The controller expects two clocks, the clock used for the AXI interface and
|
|
the clock used as the sampling rate reference clock sample.
|
|
- clock-names : "axi" for the clock to the AXI interface, "ref" for the sample
|
|
rate reference clock.
|
|
- dmas: Pairs of phandle and specifier for the DMA channels that are used by
|
|
the core. The core expects two dma channels if both transmit and receive are
|
|
enabled, one channel otherwise.
|
|
- dma-names : "tx" for the transmit channel, "rx" for the receive channel.
|
|
|
|
For more details on the 'dma', 'dma-names', 'clock' and 'clock-names' properties
|
|
please check:
|
|
* resource-names.txt
|
|
* clock/clock-bindings.txt
|
|
* dma/dma.txt
|
|
|
|
Example:
|
|
|
|
i2s: i2s@77600000 {
|
|
compatible = "adi,axi-i2s-1.00.a";
|
|
reg = <0x77600000 0x1000>;
|
|
clocks = <&clk 15>, <&audio_clock>;
|
|
clock-names = "axi", "ref";
|
|
dmas = <&ps7_dma 0>, <&ps7_dma 1>;
|
|
dma-names = "tx", "rx";
|
|
};
|