ASoC: Improve hi6210-i2s DT bindings
This patch improves the previously submitted hi6210-i2s DT
binding, adding extra details to how the multi-dai index
value maps to the potential interfaces.
(Currently just index 0 -> the S2 interface, as there is
only one supported, but in the future other interfaces may
be enabled.)
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/Documentation/devicetree/bindings/sound/hisilicon,hi6210-i2s.txt b/Documentation/devicetree/bindings/sound/hisilicon,hi6210-i2s.txt
index 680bb035..7a29678 100644
--- a/Documentation/devicetree/bindings/sound/hisilicon,hi6210-i2s.txt
+++ b/Documentation/devicetree/bindings/sound/hisilicon,hi6210-i2s.txt
@@ -17,6 +17,10 @@
- dma-names: should be "tx" and "rx"
- hisilicon,sysctrl-syscon: phandle to sysctrl syscon
- #sound-dai-cells: Should be set to 1 (for multi-dai)
+ - The dai cell indexes reference the following interfaces:
+ 0: S2 interface
+ (Currently that is the only one available, but more may be
+ supported in the future)
Example for the hi6210 i2s controller:
@@ -32,3 +36,7 @@
hisilicon,sysctrl-syscon = <&sys_ctrl>;
#sound-dai-cells = <1>;
};
+
+Then when referencing the i2s controller:
+ sound-dai = <&i2s0 0>; /* index 0 => S2 interface */
+
