ASoC: atmel: update atmel SSC with DMA binding
As atmel-ssc can be used with DMA, the documentation should be updated. Also, a configuration DMA example is given. Signed-off-by: Richard Genoud <richard.genoud@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
parent
fdbcb3cba5
commit
f813175aa5
|
@ -7,9 +7,30 @@ Required properties:
|
|||
- reg: Should contain SSC registers location and length
|
||||
- interrupts: Should contain SSC interrupt
|
||||
|
||||
Example:
|
||||
|
||||
Required properties for devices compatible with "atmel,at91sam9g45-ssc":
|
||||
- dmas: DMA specifier, consisting of a phandle to DMA controller node,
|
||||
the memory interface and SSC DMA channel ID (for tx and rx).
|
||||
See Documentation/devicetree/bindings/dma/atmel-dma.txt for details.
|
||||
- dma-names: Must be "tx", "rx".
|
||||
|
||||
Examples:
|
||||
- PDC transfer:
|
||||
ssc0: ssc@fffbc000 {
|
||||
compatible = "atmel,at91rm9200-ssc";
|
||||
reg = <0xfffbc000 0x4000>;
|
||||
interrupts = <14 4 5>;
|
||||
};
|
||||
|
||||
- DMA transfer:
|
||||
ssc0: ssc@f0010000 {
|
||||
compatible = "atmel,at91sam9g45-ssc";
|
||||
reg = <0xf0010000 0x4000>;
|
||||
interrupts = <28 4 5>;
|
||||
dmas = <&dma0 1 13>,
|
||||
<&dma0 1 14>;
|
||||
dma-names = "tx", "rx";
|
||||
pinctrl-names = "default";
|
||||
pinctrl-0 = <&pinctrl_ssc0_tx &pinctrl_ssc0_rx>;
|
||||
status = "disabled";
|
||||
};
|
||||
|
|
Loading…
Reference in a new issue