Re: [PATCH v0 2/2] arm64: dts: rockchip: add support for Firefly ROC-RK3399-PC-PLUS

[Levin]

Hi all, is it possible to turn on some codec mixer switch in the device 
tree?


Currently, to hear to sound, we need to run the following commands from 
the user space:

  # turn on mixer switch

  amixer -c 1 sset 'Left Mixer' on
  amixer -c 1 sset 'Right Mixer' on

  # raise volume

  amixer -c 1 sset 'Output 2' 36


If these settings can be embedded into device tree, and set by kernel as 
initial ALSA path settings,

user can hear the sound with zero ALSA config. That'll be great.


On 2021-06-28 11:54 AM, djw@xxxxxxxxxxxxx wrote:
> +
> +	es8388-sound {
> +		compatible = "simple-audio-card";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&hp_det_pin>;
> +		simple-audio-card,name = "rockchip,es8388-codec";
> +		simple-audio-card,format = "i2s";
> +		simple-audio-card,mclk-fs = <256>;
> +
> +		simple-audio-card,widgets =
> +			"Microphone", "Mic Jack",
> +			"Headphone", "Headphones";
> +		simple-audio-card,routing =
> +			"LINPUT1", "Mic Jack",
> +			"Headphone Amp INL", "LOUT2",
> +			"Headphone Amp INR", "ROUT2",
> +			"Headphones", "Headphone Amp OUTL",
> +			"Headphones", "Headphone Amp OUTR";
> +
> +		simple-audio-card,hp-det-gpio = <&gpio2 RK_PA6 GPIO_ACTIVE_HIGH>;
> +		simple-audio-card,aux-devs = <&headphones_amp>;
> +		simple-audio-card,pin-switches = "Headphones";
> +
> +		simple-audio-card,cpu {
> +			sound-dai = <&i2s1>;
> +		};
> +
> +		simple-audio-card,codec {
> +			sound-dai = <&es8388>;
> +		};
> +	};
> +
--
Best Regards!

Levin Du