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Add WM8960 soundcard support

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Signed-off-by: Devendra Tewari <devendra.tewari@gmail.com>
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Devendra Tewari
2021-06-08 17:39:52 -03:00
committed by Andrei Gherzan
parent 7057d5dcbf
commit 246555aea7
5 changed files with 33 additions and 0 deletions
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docs/extra-build-config.md
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@@ -349,3 +349,24 @@ Also, this will enable adding Contiguous Memory Allocation value in the cmdline.
Ref.:
* <https://github.com/raspberrypi/documentation/blob/master/linux/software/libcamera/README.md>
* <https://www.raspberrypi.org/blog/an-open-source-camera-stack-for-raspberry-pi-using-libcamera/>
## WM8960 soundcard support
Support for WM8960 based sound cards such as the WM8960 Hi-Fi Sound Card HAT for Raspberry Pi from Waveshare, and ReSpeaker 2 / 4 / 6 Mics Pi HAT from Seeed Studio, can be enabled in `local.conf`
```conf
MACHINE_FEATURES += "wm8960"
```
You may need to adjust volume and toggle switches that are off by default
```bash
amixer -c1 sset 'Headphone',0 80%,80%
amixer -c1 sset 'Speaker',0 80%,80%
amixer -c1 sset 'Left Input Mixer Boost' toggle
amixer -c1 sset 'Left Output Mixer PCM' toggle
amixer -c1 sset 'Right Input Mixer Boost' toggle
amixer -c1 sset 'Right Output Mixer PCM' toggle
```
Audio capture on ReSpeaker 2 / 4 / 6 Mics Pi HAT from Seeed Studio is very noisy.