47 lines
1.9 KiB
Plaintext
47 lines
1.9 KiB
Plaintext
|
* Atmel I2S controller
|
||
|
|
|
||
|
|
Required properties:
|
||
|
|
- compatible: Should be "atmel,sama5d2-i2s".
|
||
|
|
- reg: Should be the physical base address of the controller and the
|
||
|
|
length of memory mapped region.
|
||
|
|
- interrupts: Should contain the interrupt for the controller.
|
||
|
|
- dmas: Should be one per channel name listed in the dma-names property,
|
||
|
|
as described in atmel-dma.txt and dma.txt files.
|
||
|
|
- dma-names: Two dmas have to be defined, "tx" and "rx".
|
||
|
|
This IP also supports one shared channel for both rx and tx;
|
||
|
|
if this mode is used, one "rx-tx" name must be used.
|
||
|
|
- clocks: Must contain an entry for each entry in clock-names.
|
||
|
|
Please refer to clock-bindings.txt.
|
||
|
|
- clock-names: Should be one of each entry matching the clocks phandles list:
|
||
|
|
- "pclk" (peripheral clock) Required.
|
||
|
|
- "gclk" (generated clock) Optional (1).
|
||
|
|
- "muxclk" (I2S mux clock) Optional (1).
|
||
|
|
|
||
|
|
Optional properties:
|
||
|
|
- pinctrl-0: Should specify pin control groups used for this controller.
|
||
|
|
- princtrl-names: Should contain only one value - "default".
|
||
|
|
|
||
|
|
|
||
|
|
(1) : Only the peripheral clock is required. The generated clock and the I2S
|
||
|
|
mux clock are optional and should only be set together, when Master Mode
|
||
|
|
is required.
|
||
|
|
|
||
|
|
Example:
|
||
|
|
|
||
|
|
i2s@f8050000 {
|
||
|
|
compatible = "atmel,sama5d2-i2s";
|
||
|
|
reg = <0xf8050000 0x300>;
|
||
|
|
interrupts = <54 IRQ_TYPE_LEVEL_HIGH 7>;
|
||
|
|
dmas = <&dma0
|
||
|
|
(AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
|
||
|
|
AT91_XDMAC_DT_PERID(31))>,
|
||
|
|
<&dma0
|
||
|
|
(AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
|
||
|
|
AT91_XDMAC_DT_PERID(32))>;
|
||
|
|
dma-names = "tx", "rx";
|
||
|
|
clocks = <&i2s0_clk>, <&i2s0_gclk>, <&i2s0muxck>;
|
||
|
|
clock-names = "pclk", "gclk", "muxclk";
|
||
|
|
pinctrl-names = "default";
|
||
|
|
pinctrl-0 = <&pinctrl_i2s0_default>;
|
||
|
|
};
|