summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/sound/adi,axi-spdif-tx.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/sound/adi,axi-spdif-tx.txt')
-rw-r--r--Documentation/devicetree/bindings/sound/adi,axi-spdif-tx.txt30
1 files changed, 30 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/adi,axi-spdif-tx.txt b/Documentation/devicetree/bindings/sound/adi,axi-spdif-tx.txt
new file mode 100644
index 00000000000..46f34496531
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/adi,axi-spdif-tx.txt
@@ -0,0 +1,30 @@
+ADI AXI-SPDIF controller
+
+Required properties:
+ - compatible : Must be "adi,axi-spdif-1.00.a"
+ - reg : Must contain SPDIF 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 channel that is used by
+ the core. The core expects one dma channel for transmit.
+ - dma-names : Must be "tx"
+
+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:
+
+ spdif: spdif@0x77400000 {
+ compatible = "adi,axi-spdif-tx-1.00.a";
+ reg = <0x77600000 0x1000>;
+ clocks = <&clk 15>, <&audio_clock>;
+ clock-names = "axi", "ref";
+ dmas = <&ps7_dma 0>;
+ dma-names = "tx";
+ };