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

[Heiko Stübner]

Hi Levin,

Am Dienstag, 29. Juni 2021, 11:15:59 CEST schrieb Levin:
> Hi all, is it possible to turn on some codec mixer switch in the device 
> tree?

I don't think that is appropriate and/or/ possible in the devicetree.

Instead I think you want an Alsa UCM profile for it, see:
https://github.com/alsa-project/alsa-ucm-conf/tree/master/ucm2/Rockchip


Heiko

> 
> 
> 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>;
> > +		};
> > +	};
> > +
> >
>