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标题: RK3399Pro安卓8.1系统接了HDMI的屏，可以显示和触摸，但是没... [打印本页]

作者: crystal 时间: 2022-2-22 16:40
标题: RK3399Pro安卓8.1系统接了HDMI的屏，可以显示和触摸，但是没...
按照《Rockchip 基于 DRM 框架的 HDMI 开发指南》打开音频，如下配置的

&hdmi_dp_sound {
status = "okay";
};

用cat /proc/asound/cards查看声卡有注册，但是没有声音

作者: crystal 时间: 2022-2-22 17:53
本帖最后由 crystal 于 2022-2-22 19:25 编辑

rk3399pro:/ $ cat /proc/asound/cards
0 [rkhdmidpsound  ]: rk-hdmi-dp-soun - rk-hdmi-dp-sound
                  rk-hdmi-dp-sound
1 [realtekrt5651co]: realtek_rt5651- - realtek,rt5651-codec
                  realtek,rt5651-codec

alsa_route: route_pcm_open() route 0
alsa_route: get_route_config() route 0
alsa_route: route_info->sound_card 0, route_info->devices 0
alsa_route: route_pcm_close() route 24
alsa_route: route_set_controls() set route 0
alsa_route: get_route_config() route 0
alsa_route: set_controls() ctls_count 1
alsa_route: set_controls() Can not get ctl : Playback Path
alsa_route: route_pcm_open exit

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