mb/google/eve: rt5514: Add 16ms delay on dmic init
Add a 16ms delay to DMIC init by the kernel driver in order to
prevent an audible 'pop' noise when starting to record.
BUG=b:63413023
TEST=manual testing to ensure this device property is present in SSDT:
Name (_DSD, Package () {
ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301")
Package () {
Package () {
"realtek,dmic-init-delay",
0x10
}
}
})
Change-Id: If9160ce6992153ba49719029de336595bbf4ae72
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: https://review.coreboot.org/21271
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/mainboard/google/eve/devicetree.cb b/src/mainboard/google/eve/devicetree.cb
index 2e017f8..37e3b1e 100644
--- a/src/mainboard/google/eve/devicetree.cb
+++ b/src/mainboard/google/eve/devicetree.cb
@@ -300,6 +300,11 @@
register "hid" = ""10EC5514""
register "name" = ""RT54""
register "desc" = ""Realtek RT5514""
+ register "property_count" = "1"
+ # Set the DMIC initial delay to 16ms to avoid pop noise
+ register "property_list[0].type" = "ACPI_DP_TYPE_INTEGER"
+ register "property_list[0].name" = ""realtek,dmic-init-delay""
+ register "property_list[0].integer" = "16"
device i2c 57 on end
end
end # I2C #4