HDMI以及CVBS的sound card调试记录
查看sound card驱动注册是否成功
- 切换到root用户
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$ su
Password:
root@root#
- 查看是否注册成功
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root@root# cat /proc/asound/cards
0 [AMLAUGESOUND ]: AML-AUGESOUND - AML-AUGESOUND
AML-AUGESOUN
正常会打印出注册成功的声卡
- 删除错误节点
注册失败,删除dts里面未使用的声卡节点.
测试HDMI以及CVBS声卡设备
- 打印出声卡下的可用设备
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$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: AMLAUGESOUND [AML-AUGESOUND], device 0: TDM-B-dummy-alsaPORT-i2s multicodec-0 []
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: AMLAUGESOUND [AML-AUGESOUND], device 1: SPDIF-dummy-alsaPORT-spdif dummy-1 []
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: AMLAUGESOUND [AML-AUGESOUND], device 2: TDM-C-dummy dummy-2 []
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: AMLAUGESOUND [AML-AUGESOUND], device 3: SPDIF-B-dummy-alsaPORT-spdifb dummy-3 []
Subdevices: 1/1
Subdevice #0: subdevice #0
- 使用
aplay调试声卡设备
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$ aplay -Dhw:0,0 test.wav #CVBS是声卡0下的设备0
$ aplay -Dhw:0,1 test.wav #HDMI是声卡0下设备1
这里CVBS是TDM-B-dummy-alsaPORT-i2s,HDMI是SPDIF-dummy-alsaPORT-spdif.
调整dts
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只使用
HDMI,将HDMI相应的设备节点设置成@0. -
使用
cvbs和HDMI,CVBS节点为@0,HDMI节点为@1.
issues
如果有疑惑或错误,请提issues –> Issues