diff --git a/src/mainboard/google/reef/variants/pyro/devicetree.cb b/src/mainboard/google/reef/variants/pyro/devicetree.cb
index d5745b4..4f17f98 100644
--- a/src/mainboard/google/reef/variants/pyro/devicetree.cb
+++ b/src/mainboard/google/reef/variants/pyro/devicetree.cb
@@ -202,16 +202,16 @@
 				device i2c 15 on end
 			end
 		end # - I2C 4
-		device pci 17.1 on  end	# - I2C 5
-		device pci 17.2 on  end	# - I2C 6
-		device pci 17.3 on  end	# - I2C 7
+		device pci 17.1 off end	# - I2C 5
+		device pci 17.2 off end	# - I2C 6
+		device pci 17.3 off end	# - I2C 7
 		device pci 18.0 on  end	# - UART 0
 		device pci 18.1 on  end	# - UART 1
 		device pci 18.2 on  end	# - UART 2
-		device pci 18.3 on  end	# - UART 3
+		device pci 18.3 off end	# - UART 3
 		device pci 19.0 on  end	# - SPI 0
-		device pci 19.1 on  end	# - SPI 1
-		device pci 19.2 on  end	# - SPI 2
+		device pci 19.1 off end	# - SPI 1
+		device pci 19.2 off end	# - SPI 2
 		device pci 1a.0 on  end	# - PWM
 		device pci 1b.0 on  end	# - SDCARD
 		device pci 1c.0 on  end	# - eMMC