The internal mic boost on the T480 is too high. Fix this by applying the
ALC269_FIXUP_LIMIT_INT_MIC_BOOST fixup to the machine to limit the gain.

Signed-off-by: Benjamin Berg <bb...@redhat.com>
Tested-by: Benjamin Berg <bb...@redhat.com>
---
 sound/pci/hda/patch_realtek.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index ce28f7ce64e6..8467ce3db767 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -6510,6 +6510,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[] = {
        SND_PCI_QUIRK(0x17aa, 0x224b, "Thinkpad", ALC298_FIXUP_TPT470_DOCK),
        SND_PCI_QUIRK(0x17aa, 0x224c, "Thinkpad", ALC298_FIXUP_TPT470_DOCK),
        SND_PCI_QUIRK(0x17aa, 0x224d, "Thinkpad", ALC298_FIXUP_TPT470_DOCK),
+       SND_PCI_QUIRK(0x17aa, 0x225d, "Thinkpad T480", 
ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
        SND_PCI_QUIRK(0x17aa, 0x30bb, "ThinkCentre AIO", 
ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY),
        SND_PCI_QUIRK(0x17aa, 0x30e2, "ThinkCentre AIO", 
ALC233_FIXUP_LENOVO_LINE2_MIC_HOTKEY),
        SND_PCI_QUIRK(0x17aa, 0x310c, "ThinkCentre Station", 
ALC294_FIXUP_LENOVO_MIC_LOCATION),
-- 
2.14.3

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