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Diffstat (limited to 'meta-raspberrypi/docs/extra-build-config.md')
| -rw-r--r-- | meta-raspberrypi/docs/extra-build-config.md | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/meta-raspberrypi/docs/extra-build-config.md b/meta-raspberrypi/docs/extra-build-config.md index 1caf904fd..ec3bd6ab8 100644 --- a/meta-raspberrypi/docs/extra-build-config.md +++ b/meta-raspberrypi/docs/extra-build-config.md @@ -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. |