This page introduces the usage of SPDIF bus on 40-Pin Header.
| PIN | GPIO Name | GPIO Number | |
|---|---|---|---|
| VIM3/3L | 13 | PIN.AO10 | 422 |
| VIM4 | 13 | SPDIFOUT | 420 |
| VIM1S | 13 | SPDIFOUT | 470 |
In order to use the SPDIF, you need to enable the SPDIF function via Device Tree Overlay.
For VIM3, edit /boot/dtb/amlogic/kvim3.dtb.overlay.env to add spdifout node to fdt_overlays node if it doesn't exist.
For VIM3L, edit /boot/dtb/amlogic/kvim3l.dtb.overlay.env to add spdifout node to fdt_overlays node if it doesn't exist.
e.g. To enable SPDIF, you need to add spdifout to node fdt_overlays if it doesn't exist.
fdt_overlays=spdifout
After reboot, you can connect your spdif device to corresponding pins.
In order to use the SPDIF, you need to enable the SPDIF function via Device Tree Overlay.
Edit /boot/dtb/amlogic/kvim4.dtb.overlay.env to add spdifout node to fdt_overlays node if it doesn't exist.
e.g. To enable SPDIF, you need to add spdifout to node fdt_overlays if it doesn't exist.
fdt_overlays=spdifout
After reboot, you can connect your spdif device to corresponding pins.
In order to use the SPDIF, you need to enable the SPDIF function via Device Tree Overlay.
Edit /boot/dtb/amlogic/kvim1s.dtb.overlay.env to add spdifout node to fdt_overlays node if it doesn't exist.
e.g. To enable SPDIF, you need to add spdifout to node fdt_overlays if it doesn't exist.
fdt_overlays=spdifout
After reboot, you can connect your spdif device to corresponding pins.
After connecting your device.
$ aplay -l # find your spdif card and play audio using it $ aplay -D hw:0,1 <audio_file>.wav # replace 0,0 with spdif interface (card,device)