V3: https://patchwork.kernel<email address hidden>/ V4 only available from https://github.com/CirrusLogic/product-support/blob/cs8409_hda/dell/hda/5.14/patch_cirrus_dolphin_v4.tar.gz
V3: https:/ /patchwork. kernel<email address hidden>/ /github. com/CirrusLogic /product- support/ blob/cs8409_ hda/dell/ hda/5.14/ patch_cirrus_ dolphin_ v4.tar. gz
V4 only available from https:/