diff --git a/src/mainboard/google/reef/variants/snappy/devicetree.cb b/src/mainboard/google/reef/variants/snappy/devicetree.cb
index b4c53ea70e..f393019737 100644
--- a/src/mainboard/google/reef/variants/snappy/devicetree.cb
+++ b/src/mainboard/google/reef/variants/snappy/devicetree.cb
@@ -90,6 +90,7 @@ chip soc/intel/apollolake
 		device pci 0e.0 on	# - Audio
 			chip drivers/generic/max98357a
 				register "sdmode_gpio" =  "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_76)"
+				register "sdmode_delay" = "5"
 				device generic 0 on end
 			end
 		end