Am Dienstag, 29. Juni 2021, 11:30:10 CEST schrieb Heiko Stübner:

Hi Levin,

Am Dienstag, 29. Juni 2021, 11:15:59 CEST schrieb Levin:

quoted

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

quoted

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@t-chip.com.cn wrote:

quoted

+
+	es8388-sound {
+		compatible = "simple-audio-card";
+		pinctrl-names = "default";
+		pinctrl-0 = <&hp_det_pin>;
+		simple-audio-card,name = "rockchip,es8388-codec";

and I guess you'd want a more specific name as that config likely is board-specific
not for all boards using the es8388-codec?


Heiko

quoted

quoted

+		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>;
+		};
+	};
+