Buildroot_5.10 rk809音频（实现耳机+喇叭切换）+ HDMI音频 + 视频播放测试指令（4K）

YY2065

已于 2023-01-07 15:13:56 修改

阅读量1.9k

点赞数 1

分类专栏： # EM3568 Buildroot_5.10 文章标签： linux

于 2023-01-05 18:44:54 首次发布

本文链接：https://blog.youkuaiyun.com/YY2065/article/details/128568411

版权

本文介绍了如何在Buildroot 5.10环境下，针对RK809芯片实现耳机与喇叭的音频切换功能，并详细讲解了HDMI音频的配置与测试，同时提供了4K视频播放的测试指令，帮助开发者进行嵌入式系统的多媒体功能验证。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

1. \EM3568_Buildroot\kernel\arch\arm64\boot\dts\rockchip\rk3568-evb.dtsi


hdmi音频

	hdmi_sound: hdmi-sound {
   
		compatible = "simple-audio-card";
		simple-audio-card,format = "i2s";
		simple-audio-card,mclk-fs = <128>;
		simple-audio-card,name = "rockchip,hdmi";
		status = "disabled";

		simple-audio-card,cpu {
   
				sound-dai = <&i2s0_8ch>;
		};
		simple-audio-card,codec {
   
				sound-dai = <&hdmi>;
		};
	}; 


&hdmi_sound {
   
	status = "okay";
};

&i2s0_8ch {
   
	status = "okay";
};

rk809音频

rk809_sound: rk809-sound {
   
		status = "okay";
		compatible = "rockchip,multicodecs-card"; 
		rockchip,card-name = "rockchip-rk809";
		hp-det-gpio = <&gpio4 RK_PC4 GPIO_ACTIVE_HIGH>;
		rockchip,format = "i2s";
		rockchip,mclk-fs = <256>;
		rockchip,cpu = <&i2s1_8ch>;
		rockchip,codec