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+ADI AXI-I2S controller
+
+Required properties:
+ - compatible : Must be "adi,axi-i2s-1.00.a"
+ - reg : Must contain I2S registers location and length
+ - clocks : Clock specifier providing a handle to the controller's clocks. The
+ controller expects two clocks, the clock used for the AXI interface and the
+ clock used as thei sampling rate reference clock sample.
+ - clock-names : "axi" for the clock to the AXI interface, "ref" for the sample
+ rate reference clock.
+ - dma : Specifiers for the DMA channels that are used by the core.
+ - 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@0x77600000 {
+ 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";
+ };
This patch adds the devicetree documentation for the ADI AXI-SPDIF audio controller. The controller has: * One set of memory mapped register * Two clocks, one for the memory mapped register interface, one used as the audio reference clock * One DMA interface each for the transmit and receive data Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: devicetree@vger.kernel.org --- .../devicetree/bindings/sound/adi,axi-i2s.txt | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/adi,axi-i2s.txt