summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/sound/amlogic,axg-fifo.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/sound/amlogic,axg-fifo.txt')
-rw-r--r--Documentation/devicetree/bindings/sound/amlogic,axg-fifo.txt34
1 files changed, 34 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/amlogic,axg-fifo.txt b/Documentation/devicetree/bindings/sound/amlogic,axg-fifo.txt
new file mode 100644
index 000000000..fa4545ed8
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/amlogic,axg-fifo.txt
@@ -0,0 +1,34 @@
+* Amlogic Audio FIFO controllers
+
+Required properties:
+- compatible: 'amlogic,axg-toddr' or
+ 'amlogic,axg-toddr' or
+ 'amlogic,g12a-frddr' or
+ 'amlogic,g12a-toddr' or
+ 'amlogic,sm1-frddr' or
+ 'amlogic,sm1-toddr'
+- reg: physical base address of the controller and length of memory
+ mapped region.
+- interrupts: interrupt specifier for the fifo.
+- clocks: phandle to the fifo peripheral clock provided by the audio
+ clock controller.
+- resets: list of reset phandle, one for each entry reset-names.
+- reset-names: should contain the following:
+ * "arb" : memory ARB line (required)
+ * "rst" : dedicated device reset line (optional)
+- #sound-dai-cells: must be 0.
+- amlogic,fifo-depth: The size of the controller's fifo in bytes. This
+ is useful for determining certain configuration such
+ as the flush threshold of the fifo
+
+Example of FRDDR A on the A113 SoC:
+
+frddr_a: audio-controller@1c0 {
+ compatible = "amlogic,axg-frddr";
+ reg = <0x0 0x1c0 0x0 0x1c>;
+ #sound-dai-cells = <0>;
+ interrupts = <GIC_SPI 88 IRQ_TYPE_EDGE_RISING>;
+ clocks = <&clkc_audio AUD_CLKID_FRDDR_A>;
+ resets = <&arb AXG_ARB_FRDDR_A>;
+ fifo-depth = <512>;
+};