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>
This commit is contained in:
John Stultz 2017-04-10 12:35:11 -07:00 committed by Mark Brown
parent 0bf750f4cb
commit 86666c083a

View file

@ -17,6 +17,10 @@ Required properties:
- 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 @@ i2s0: i2s@f7118000{
hisilicon,sysctrl-syscon = <&sys_ctrl>;
#sound-dai-cells = <1>;
};
Then when referencing the i2s controller:
sound-dai = <&i2s0 0>; /* index 0 => S2 interface */