linux/Documentation/devicetree/bindings/sound/rockchip,rk3399-gru-sound.txt
Wonjoon Lee 3a6f9dce61 ASoC: rk3399_gru_sound: fix recording pop at first attempt
Pop happens when mclk applied but dmic's own boot-time
Specify dmic delay times in dt to make sure
clocks are ready earlier than dmic working

Signed-off-by: Wonjoon Lee <woojoo.lee@samsung.com>
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-09-24 19:11:04 +01:00

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ROCKCHIP with MAX98357A/RT5514/DA7219 codecs on GRU boards
Required properties:
- compatible: "rockchip,rk3399-gru-sound"
- rockchip,cpu: The phandle of the Rockchip I2S controller that's
connected to the codecs
- rockchip,codec: The phandle of the MAX98357A/RT5514/DA7219 codecs
Optional properties:
- dmic-wakeup-delay-ms : specify delay time (ms) for DMIC ready.
If this option is specified, which means it's required dmic need
delay for DMIC to ready so that rt5514 can avoid recording before
DMIC send valid data
Example:
sound {
compatible = "rockchip,rk3399-gru-sound";
rockchip,cpu = <&i2s0>;
rockchip,codec = <&max98357a &rt5514 &da7219>;
dmic-wakeup-delay-ms = <20>;
};