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-rw-r--r--src/mainboard/google/volteer/variants/baseboard/devicetree.cb15
1 files changed, 15 insertions, 0 deletions
diff --git a/src/mainboard/google/volteer/variants/baseboard/devicetree.cb b/src/mainboard/google/volteer/variants/baseboard/devicetree.cb
index a65e5f1be8..84d121f2b1 100644
--- a/src/mainboard/google/volteer/variants/baseboard/devicetree.cb
+++ b/src/mainboard/google/volteer/variants/baseboard/devicetree.cb
@@ -110,6 +110,21 @@ chip soc/intel/tigerlake
[PchSerialIoIndexUART2] = PchSerialIoDisabled,
}"
+ # HD Audio
+ register "PchHdaDspEnable" = "1"
+ register "PchHdaAudioLinkHdaEnable" = "0"
+ register "PchHdaAudioLinkDmicEnable[0]" = "1"
+ register "PchHdaAudioLinkDmicEnable[1]" = "1"
+ register "PchHdaAudioLinkSspEnable[0]" = "1"
+ register "PchHdaAudioLinkSspEnable[1]" = "1"
+ # iDisp-Link T-Mode 0: 2T, 2: 4T, 3: 8T, 4: 16T
+ register "PchHdaIDispLinkTmode" = "2"
+ # iDisp-Link Freq 4: 96MHz, 3: 48MHz.
+ register "PchHdaIDispLinkFrequency" = "4"
+ # Not disconnected/enumerable
+ register "PchHdaIDispCodecDisconnect" = "0"
+
+
# TCSS USB3
register "TcssXhciEn" = "1"