colin/nix-files
1
0
Fork 1
Code Issues Pull Requests Projects Releases Wiki Activity

pine64-alsa-ucm: hack in support for EFI/systemd-boot

Browse Source
This commit is contained in:
Colin
2025-09-03 23:46:44 +00:00
parent 8a90311ea6
commit b46a294e56
1 changed files with 10 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
pkgs/by-name/pine64-alsa-ucm/package.nix
View File

@@ -39,6 +39,16 @@ stdenvNoCC.mkDerivation {
ln -s ../../Rockchip/rk3399/PinePhonePro/PinePhonePro.conf $out/share/alsa/ucm2/conf.d/simple-card/PinePhonePro.conf
ln -s ../../Allwinner/A64/PinePhone/PinePhone.conf $out/share/alsa/ucm2/conf.d/simple-card/PinePhone.conf
# XXX(2025-09-03): if booted via systemd-boot, the card will be named differently but otherwise function equivalently.
# this is because, if DMI (via EFI) is available, the kernel uses Vendor + Product Name fields to assign the card a long_name,
# instead of the device-tree fields.
# there seems no easy way to change that on the kernel side, nor to configure ALSA UCM to prefer the card short name.
# TODO: consider other ways to configure the card *besides* UCM:
# - smarter in-kernel driver/configs?
# - pipewire / pulseaudio card profiles?
# - particularly, expose the card on the kernel side in such a way that the generic pipewire profiles can configure it.
ln -s PinePhonePro.conf $out/share/alsa/ucm2/conf.d/simple-card/pine64-Pine64PinePhonePro-.conf
runHook postInstall
'';