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-rw-r--r--src/mainboard/google/zork/variants/vilboz/overridetree.cb18
1 files changed, 18 insertions, 0 deletions
diff --git a/src/mainboard/google/zork/variants/vilboz/overridetree.cb b/src/mainboard/google/zork/variants/vilboz/overridetree.cb
index bc1607e5a4..49d21d569a 100644
--- a/src/mainboard/google/zork/variants/vilboz/overridetree.cb
+++ b/src/mainboard/google/zork/variants/vilboz/overridetree.cb
@@ -36,6 +36,24 @@ chip soc/amd/picasso
# See AMD 55570-B1 Table 13: PCI Device ID Assignments.
device domain 0 on
subsystemid 0x1022 0x1510 inherit
+ device pci 8.1 on
+ device pci 0.5 on
+ chip drivers/amd/i2s_machine_dev
+ register "hid" = ""AMDI1015""
+ # DMIC select GPIO for ACP machine device
+ # This GPIO is used to select DMIC0 or DMIC1 by the
+ # kernel driver. It does not really have a polarity
+ # since low and high control the selection of DMIC and
+ # hence does not have an active polarity.
+ # Kernel driver does not use the polarity field and
+ # instead treats the GPIO selection as follows:
+ # Set low (0) = Select DMIC0
+ # Set high (1) = Select DMIC1
+ register "dmic_select_gpio" = "ACPI_GPIO_OUTPUT(GPIO_67)"
+ device generic 0.0 on end
+ end
+ end # Audio
+ end
device pci 14.3 on # - D14F3 bridge
chip ec/google/chromeec
device pnp 0c09.0 on