RK3506 SAI 接口
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请问是否能出一个教学视频，以便用户在Luckfox Lyra上使用SAI接口连接任意I2S CODEC（无需I2C/SPI控制）？
您好，我们目前没有接触过无需I2C/SPI控制的I2S CODEC，也没有专门制作教学视频的人员。
硬件适配往往需要结合数据手册和驱动源码做调整，没有通用的方案可以适配任意Audio Codec，我们只能通过wiki做简单介绍。
硬件适配往往需要结合数据手册和驱动源码做调整，没有通用的方案可以适配任意Audio Codec，我们只能通过wiki做简单介绍。
无需具体的CODEC，只需要能让音频信号能以I2S格式从SAI0或SAI1输出，播放wave文件时能用示波器在SAI的引脚上检测到正确信号波形即可。
hello, you need to use "rockchip,dummy-codec", example from dts
Code: Select all
sai0-sound {
compatible = "rockchip,multicodecs-card";
rockchip,card-name = "sai0-tdm";
rockchip,format = "dsp_b";
rockchip,mclk-fs = <256>;
dai-tdm-slot-num = <8>;
dai-tdm-slot-width = <8>;
rockchip,cpu = <&sai0>;
rockchip,codec = <&dummy_codec0>;
};
dummy_codec0: dummy-codec0 {
compatible = "rockchip,dummy-codec";
clocks = <&mclkout_sai0>;
clock-names = "mclk";
assigned-clocks = <&mclkout_sai0>;
};
Thank you very much for your kind advice. I have now got the virtual sound card working properly. ：）pgridin wrote: ↑2025-06-08 12:01 hello, you need to use "rockchip,dummy-codec", example from dtsCode: Select all
sai0-sound { compatible = "rockchip,multicodecs-card"; rockchip,card-name = "sai0-tdm"; rockchip,format = "dsp_b"; rockchip,mclk-fs = <256>; dai-tdm-slot-num = <8>; dai-tdm-slot-width = <8>; rockchip,cpu = <&sai0>; rockchip,codec = <&dummy_codec0>; }; dummy_codec0: dummy-codec0 { compatible = "rockchip,dummy-codec"; clocks = <&mclkout_sai0>; clock-names = "mclk"; assigned-clocks = <&mclkout_sai0>; };