soc/intel/common/block: Add common chip config block

Adding common chip config structure which will be used to return data to
common code. When common code requires soc data, code used to fetch
entire soc config structure. With this change, common code will only get
the data/structure which is required by common code and not entire
config.

For now, adding i2c, gspi and lockdown configuration which will be used
by common code.

BUG=none
BRANCH=b:78109109
TEST=compile code for APL/SKL/CNL. Boot using SKL/APL/CNL and check
values are returned properly using common structure.

Change-Id: I7f1671e064782397d3ace066a08bf1333192b21a
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Reviewed-on: https://review.coreboot.org/26189
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Hannah Williams <hannah.williams@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

20 files changed, 727 insertions, 578 deletions

diff --git a/src/mainboard/google/chell/devicetree.cb b/src/mainboard/google/chell/devicetree.cb
index fa1fde4d94..4ad8036cfa 100644
--- a/src/mainboard/google/chell/devicetree.cb
+++ b/src/mainboard/google/chell/devicetree.cb
@@ -189,7 +189,9 @@ chip soc/intel/skylake
 	register "SendVrMbxCmd" = "1"
 
 	# Lock Down
-	register "chipset_lockdown" = "CHIPSET_LOCKDOWN_COREBOOT"
+	register "common_soc_config" = "{
+		.chipset_lockdown = CHIPSET_LOCKDOWN_COREBOOT
+	}"
 
 	device cpu_cluster 0 on
 		device lapic 0 on end
diff --git a/src/mainboard/google/eve/devicetree.cb b/src/mainboard/google/eve/devicetree.cb
index fa12d8b06d..a812c0814f 100644
--- a/src/mainboard/google/eve/devicetree.cb
+++ b/src/mainboard/google/eve/devicetree.cb
@@ -169,46 +169,60 @@ chip soc/intel/skylake
 	register "usb3_ports[2]" = "USB3_PORT_EMPTY"		# Empty
 	register "usb3_ports[3]" = "USB3_PORT_EMPTY"		# Empty
 
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| chipset_lockdown  | CHIPSET_LOCKDOWN_COREBOOT |
+	#| I2C0              | Touchscreen               |
+	#| I2C1              | Early TPM access          |
+	#| I2C2              | Touchpad                  |
+	#| I2C4              | Audio                     |
+	#+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.chipset_lockdown = CHIPSET_LOCKDOWN_COREBOOT,
+		.i2c[0] = {
+			.speed = I2C_SPEED_FAST_PLUS,
+			.rise_time_ns = 98,
+			.fall_time_ns = 38,
+		},
+		.i2c[1] = {
+			.early_init = 1,
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 112,
+			.fall_time_ns = 34,
+		},
+		.i2c[2] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 186,
+				.scl_hcnt = 93,
+				.sda_hold = 36,
+			}
+		},
+		.i2c[4] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 176,
+				.scl_hcnt = 95,
+				.sda_hold = 36,
+			}
+		},
+	}"
+
 	# Touchscreen
 	register "i2c_voltage[0]" = "I2C_VOLTAGE_3V3"
-	register "i2c[0]" = "{
-		.speed = I2C_SPEED_FAST_PLUS,
-		.rise_time_ns = 98,
-		.fall_time_ns = 38,
-	}"
 
 	# Enable I2C1 bus early for TPM access
 	register "i2c_voltage[1]" = "I2C_VOLTAGE_3V3"
-	register "i2c[1]" = "{
-		.early_init = 1,
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 112,
-		.fall_time_ns = 34,
-	}"
 
 	# Touchpad
 	register "i2c_voltage[2]" = "I2C_VOLTAGE_1V8"
-	register "i2c[2]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 186,
-			.scl_hcnt = 93,
-			.sda_hold = 36,
-		}
-	}"
 
 	# Audio
 	register "i2c_voltage[4]" = "I2C_VOLTAGE_1V8"
-	register "i2c[4]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 176,
-			.scl_hcnt = 95,
-			.sda_hold = 36,
-		}
-	}"
 
 	# Must leave UART0 enabled or SD/eMMC will not work as PCI
 	register "SerialIoDevMode" = "{
@@ -230,9 +244,6 @@ chip soc/intel/skylake
 	register "tdp_pl2_override" = "15"
 	register "tcc_offset" = "10"
 
-	# Lock Down
-	register "chipset_lockdown" = "CHIPSET_LOCKDOWN_COREBOOT"
-
 	device cpu_cluster 0 on
 		device lapic 0 on end
 	end
diff --git a/src/mainboard/google/fizz/devicetree.cb b/src/mainboard/google/fizz/devicetree.cb
index 6418c7ddc1..67828d1ffd 100644
--- a/src/mainboard/google/fizz/devicetree.cb
+++ b/src/mainboard/google/fizz/devicetree.cb
@@ -275,21 +275,32 @@ chip soc/intel/skylake
 	register "i2c_voltage[2]" = "I2C_VOLTAGE_3V3"		# Debug
 	register "i2c_voltage[5]" = "I2C_VOLTAGE_1V8"		# Audio
 
-	# Use GSPI0 for cr50 TPM. Early init is required to set up a BAR for TPM
-	# communication before memory is up.
-	register "gspi[0]" = "{
-		 .speed_mhz = 1,
-		 .early_init = 1,
-	}"
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| chipset_lockdown  | CHIPSET_LOCKDOWN_COREBOOT |
+	#| GSPI0             | cr50 TPM. Early init is   |
+	#|                   | required to set up a BAR  |
+	#|                   | for TPM communication     |
+	#|                   | before memory is up       |
+	#| I2C5              | Audio                     |
+	#+-------------------+---------------------------+
 
-	# audio
-	register "i2c[5]" = "{
-		 .speed = I2C_SPEED_FAST,
-		 .speed_config[0] = {
+	register "common_soc_config" = "{
+		.chipset_lockdown = CHIPSET_LOCKDOWN_COREBOOT,
+		.gspi[0] = {
+			.speed_mhz = 1,
+			.early_init = 1,
+		},
+		.i2c[5] = {
 			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 194,
-			.scl_hcnt = 100,
-			.sda_hold = 36,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 194,
+				.scl_hcnt = 100,
+				.sda_hold = 36,
+			},
 		},
 	}"
 
@@ -316,9 +327,6 @@ chip soc/intel/skylake
 	# Use default SD card detect GPIO configuration
 	register "sdcard_cd_gpio_default" = "GPP_A7"
 
-	# Lock Down
-	register "chipset_lockdown" = "CHIPSET_LOCKDOWN_COREBOOT"
-
 	device cpu_cluster 0 on
 		device lapic 0 on end
 	end
diff --git a/src/mainboard/google/glados/devicetree.cb b/src/mainboard/google/glados/devicetree.cb
index 19c9beb7f4..386e3dbb6d 100644
--- a/src/mainboard/google/glados/devicetree.cb
+++ b/src/mainboard/google/glados/devicetree.cb
@@ -187,7 +187,9 @@ chip soc/intel/skylake
 	register "SendVrMbxCmd" = "1"
 
 	# Lock Down
-	register "chipset_lockdown" = "CHIPSET_LOCKDOWN_COREBOOT"
+	register "common_soc_config" = "{
+		.chipset_lockdown = CHIPSET_LOCKDOWN_COREBOOT,
+	}"
 
 	device cpu_cluster 0 on
 		device lapic 0 on end
diff --git a/src/mainboard/google/lars/devicetree.cb b/src/mainboard/google/lars/devicetree.cb
index c860569c9b..6bb460ae3c 100644
--- a/src/mainboard/google/lars/devicetree.cb
+++ b/src/mainboard/google/lars/devicetree.cb
@@ -184,7 +184,9 @@ chip soc/intel/skylake
 	register "SendVrMbxCmd" = "2"
 
 	# Lock Down
-	register "chipset_lockdown" = "CHIPSET_LOCKDOWN_COREBOOT"
+	register "common_soc_config" = "{
+		.chipset_lockdown = CHIPSET_LOCKDOWN_COREBOOT,
+	}"
 
 	device cpu_cluster 0 on
 		device lapic 0 on end
diff --git a/src/mainboard/google/octopus/variants/baseboard/devicetree.cb b/src/mainboard/google/octopus/variants/baseboard/devicetree.cb
index 1411a7c13d..9bd51ca35c 100644
--- a/src/mainboard/google/octopus/variants/baseboard/devicetree.cb
+++ b/src/mainboard/google/octopus/variants/baseboard/devicetree.cb
@@ -54,40 +54,45 @@ chip soc/intel/apollolake
 	register "hdaudio_pwr_gate_enable" = "1"
 	register "hdaudio_bios_config_lockdown" = "1"
 
-	# digitizer at 400kHz
-	register "i2c[0]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 152,
-		.fall_time_ns = 30,
-	}"
-
-	# Enable I2C5 for audio codec at 400kHz
-	register "i2c[5]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 104,
-		.fall_time_ns = 52,
-	}"
-
-	# trackpad at 400kHz
-	register "i2c[6]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 114,
-		.fall_time_ns = 164,
-		.data_hold_time_ns = 350,
-	}"
-
-	# touchscreen at 400kHz
-	register "i2c[7]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 76,
-		.fall_time_ns = 164,
-	}"
-
-	# Use GSPI0 for cr50 TPM. Early init is required to set up a BAR for TPM
-	# communication before memory is up.
-	register "gspi[0]" = "{
-		.speed_mhz = 1,
-		.early_init = 1,
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| GSPI0             | cr50 TPM. Early init is   |
+	#|                   | required to set up a BAR  |
+	#|                   | for TPM communication     |
+	#|                   | before memory is up       |
+	#| I2C0              | Digitizer                 |
+	#| I2C5              | Audio                     |
+	#| I2C6              | Trackpad                  |
+	#| I2C7              | Touchscreen               |
+	#+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.gspi[0] = {
+			.speed_mhz = 1,
+			.early_init = 1,
+		},
+		.i2c[0] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 152,
+			.fall_time_ns = 30,
+		},
+		.i2c[5] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 104,
+			.fall_time_ns = 52,
+		},
+		.i2c[6] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 114,
+			.fall_time_ns = 164,
+			.data_hold_time_ns = 350,
+		},
+		.i2c[7] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 76,
+			.fall_time_ns = 164,
+		},
 	}"
 
 	register "pnp_settings" = "PNP_PERF_POWER"
diff --git a/src/mainboard/google/octopus/variants/bip/devicetree.cb b/src/mainboard/google/octopus/variants/bip/devicetree.cb
index 277cb764f0..339b5bfcb1 100644
--- a/src/mainboard/google/octopus/variants/bip/devicetree.cb
+++ b/src/mainboard/google/octopus/variants/bip/devicetree.cb
@@ -54,40 +54,45 @@ chip soc/intel/apollolake
 	register "hdaudio_pwr_gate_enable" = "1"
 	register "hdaudio_bios_config_lockdown" = "1"
 
-	# digitizer at 400kHz
-	register "i2c[0]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 152,
-		.fall_time_ns = 30,
-	}"
-
-	# Enable I2C5 for audio codec at 400kHz
-	register "i2c[5]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 104,
-		.fall_time_ns = 52,
-	}"
-
-	# trackpad at 400kHz
-	register "i2c[6]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 114,
-		.fall_time_ns = 164,
-		.data_hold_time_ns = 350,
-	}"
-
-	# touchscreen at 400kHz
-	register "i2c[7]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 76,
-		.fall_time_ns = 164,
-	}"
-
-	# Use GSPI0 for cr50 TPM. Early init is required to set up a BAR for TPM
-	# communication before memory is up.
-	register "gspi[0]" = "{
-		.speed_mhz = 1,
-		.early_init = 1,
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| GSPI0             | cr50 TPM. Early init is   |
+	#|                   | required to set up a BAR  |
+	#|                   | for TPM communication     |
+	#|                   | before memory is up       |
+	#| I2C0              | Digitizer                 |
+	#| I2C5              | Audio                     |
+	#| I2C6              | Trackpad                  |
+	#| I2C7              | Touchscreen               |
+	#+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.gspi[0] = {
+			.speed_mhz = 1,
+			.early_init = 1,
+		},
+		.i2c[0] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 152,
+			.fall_time_ns = 30,
+		},
+		.i2c[5] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 104,
+			.fall_time_ns = 52,
+		},
+		.i2c[6] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 114,
+			.fall_time_ns = 164,
+			.data_hold_time_ns = 350,
+		},
+		.i2c[7] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 76,
+			.fall_time_ns = 164,
+		},
 	}"
 
 	register "pnp_settings" = "PNP_PERF_POWER"
diff --git a/src/mainboard/google/poppy/variants/atlas/devicetree.cb b/src/mainboard/google/poppy/variants/atlas/devicetree.cb
index 64e7113adc..7742a83485 100644
--- a/src/mainboard/google/poppy/variants/atlas/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/atlas/devicetree.cb
@@ -66,7 +66,6 @@ chip soc/intel/skylake
 	register "psys_pmax" = "45"
 	register "tcc_offset" = "10"
 	register "pch_trip_temp" = "75"
-	register "chipset_lockdown" = "CHIPSET_LOCKDOWN_COREBOOT"
 
 	register "pirqa_routing" = "PCH_IRQ11"
 	register "pirqb_routing" = "PCH_IRQ10"
@@ -175,51 +174,66 @@ chip soc/intel/skylake
 	register "usb3_ports[2]" = "USB3_PORT_EMPTY"		# Empty
 	register "usb3_ports[3]" = "USB3_PORT_EMPTY"		# Empty
 
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| chipset_lockdown  | CHIPSET_LOCKDOWN_COREBOOT |
+	#| GSPI0             | cr50 TPM. Early init is   |
+	#|                   | required to set up a BAR  |
+	#|                   | for TPM communication     |
+	#|                   | before memory is up       |
+	#| I2C0              | Touchscreen               |
+	#| I2C2              | Trackpad                  |
+	#| I2C3              | Camera                    |
+	#| I2C4              | Audio                     |
+	#+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.chipset_lockdown = CHIPSET_LOCKDOWN_COREBOOT,
+		.i2c[0] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 98,
+			.fall_time_ns = 38,
+		},
+		.i2c[2] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 186,
+				.scl_hcnt = 93,
+				.sda_hold = 36,
+			},
+		},
+		.i2c[3] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 98,
+			.fall_time_ns = 38,
+		},
+		.i2c[4] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 176,
+				.scl_hcnt = 95,
+				.sda_hold = 36,
+			}
+		},
+		.gspi[0] = {
+			.speed_mhz = 1,
+			.early_init = 1,
+		},
+	}"
 	# Touchscreen
 	register "i2c_voltage[0]" = "I2C_VOLTAGE_3V3"
-	register "i2c[0]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 98,
-		.fall_time_ns = 38,
-	}"
 
 	# Trackpad
 	register "i2c_voltage[2]" = "I2C_VOLTAGE_1V8"
-	register "i2c[2]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 186,
-			.scl_hcnt = 93,
-			.sda_hold = 36,
-		},
-	}"
 
 	# Camera
 	register "i2c_voltage[3]" = "I2C_VOLTAGE_1V8"
-	register "i2c[3]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 98,
-		.fall_time_ns = 38,
-	}"
 
 	# Audio
 	register "i2c_voltage[4]" = "I2C_VOLTAGE_1V8"
-	register "i2c[4]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 176,
-			.scl_hcnt = 95,
-			.sda_hold = 36,
-		}
-	}"
-
-	# GSPI0 for cr50 TPM
-	register "gspi[0]" = "{
-		 .speed_mhz = 1,
-		 .early_init = 1,
-	}"
 
 	register "SerialIoDevMode" = "{
 		[PchSerialIoIndexI2C0]  = PchSerialIoPci,
diff --git a/src/mainboard/google/poppy/variants/baseboard/devicetree.cb b/src/mainboard/google/poppy/variants/baseboard/devicetree.cb
index 8ea5c2da2b..6fe949ffc2 100644
--- a/src/mainboard/google/poppy/variants/baseboard/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/baseboard/devicetree.cb
@@ -170,71 +170,85 @@ chip soc/intel/skylake
 	register "usb3_ports[2]" = "USB3_PORT_DEFAULT(OC_SKIP)"	# Type-A Port
 	register "usb3_ports[3]" = "USB3_PORT_EMPTY"		# Empty
 
-	# Touchscreen
-	register "i2c_voltage[0]" = "I2C_VOLTAGE_3V3"
-	register "i2c[0]" = "{
-		 .speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| chipset_lockdown  | CHIPSET_LOCKDOWN_COREBOOT |
+	#| I2C0              | Touchscreen               |
+	#| I2C1              | H1                        |
+	#| I2C2              | Camera                    |
+	#| I2C3              | Pen                       |
+	#| I2C4              | Camera                    |
+	#| I2C5              | Audio                     |
+	#+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.chipset_lockdown = CHIPSET_LOCKDOWN_COREBOOT,
+		.i2c[0] = {
 			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 185,
-			.scl_hcnt = 90,
-			.sda_hold = 36,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 185,
+				.scl_hcnt = 90,
+				.sda_hold = 36,
+			},
 		},
-	}"
-
-	# H1
-	register "i2c_voltage[1]" = "I2C_VOLTAGE_3V3"
-	register "i2c[1]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
+		.i2c[1] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 190,
+				.scl_hcnt = 100,
+				.sda_hold = 36,
+			},
+			.early_init = 1,
+		},
+		.i2c[2] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 190,
+				.scl_hcnt = 97,
+				.sda_hold = 36,
+			},
+		},
+		.i2c[4] = {
 			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 190,
-			.scl_hcnt = 100,
-			.sda_hold = 36,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 190,
+				.scl_hcnt = 97,
+				.sda_hold = 36,
+			},
+		},
+		.i2c[5] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 190,
+				.scl_hcnt = 98,
+				.sda_hold = 36,
+			},
 		},
-		.early_init = 1,
 	}"
 
+	# Touchscreen
+	register "i2c_voltage[0]" = "I2C_VOLTAGE_3V3"
+
+	# H1
+	register "i2c_voltage[1]" = "I2C_VOLTAGE_3V3"
 
 	# Camera
 	register "i2c_voltage[2]" = "I2C_VOLTAGE_1V8"
-	register "i2c[2]" = "{
-		 .speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 190,
-			.scl_hcnt = 97,
-			.sda_hold = 36,
-		},
-	}"
 
 	# Pen
 	register "i2c_voltage[3]" = "I2C_VOLTAGE_1V8"
 
 	# Camera
 	register "i2c_voltage[4]" = "I2C_VOLTAGE_1V8"
-	register "i2c[4]" = "{
-		 .speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 190,
-			.scl_hcnt = 97,
-			.sda_hold = 36,
-		},
-	}"
 
 	# Audio
 	register "i2c_voltage[5]" = "I2C_VOLTAGE_1V8"
-	register "i2c[5]" = "{
-		 .speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 190,
-			.scl_hcnt = 98,
-			.sda_hold = 36,
-		},
-	}"
-
 
 	# Must leave UART0 enabled or SD/eMMC will not work as PCI
 	register "SerialIoDevMode" = "{
@@ -260,9 +274,6 @@ chip soc/intel/skylake
 	# Use default SD card detect GPIO configuration
 	register "sdcard_cd_gpio_default" = "GPP_E15"
 
-	# Lock Down
-	register "chipset_lockdown" = "CHIPSET_LOCKDOWN_COREBOOT"
-
 	# PCH Trip Temperature in degree C
 	register "pch_trip_temp" = "75"
 
diff --git a/src/mainboard/google/poppy/variants/nami/devicetree.cb b/src/mainboard/google/poppy/variants/nami/devicetree.cb
index 0c4a8e8802..fdbe6ffc75 100644
--- a/src/mainboard/google/poppy/variants/nami/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/nami/devicetree.cb
@@ -196,58 +196,73 @@ chip soc/intel/skylake
 
 	# Touchscreen
 	register "i2c_voltage[0]" = "I2C_VOLTAGE_3V3"
-	register "i2c[0]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 185,
-			.scl_hcnt = 90,
-			.sda_hold = 36,
-		},
-	}"
 
 	# Trackpad
 	register "i2c_voltage[1]" = "I2C_VOLTAGE_3V3"
-	register "i2c[1]" = "{
-		.early_init = 1,
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 185,
-			.scl_hcnt = 90,
-			.sda_hold = 36,
-		},
-	}"
 
 	# Pen
 	register "i2c_voltage[2]" = "I2C_VOLTAGE_1V8"
-	register "i2c[2]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 185,
-			.scl_hcnt = 100,
-			.sda_hold = 36,
-		},
-	}"
 
 	# Audio
 	register "i2c_voltage[3]" = "I2C_VOLTAGE_1V8"
-	register "i2c[3]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
+
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| chipset_lockdown  | CHIPSET_LOCKDOWN_COREBOOT |
+	#| GSPI0             | cr50 TPM. Early init is   |
+	#|                   | required to set up a BAR  |
+	#|                   | for TPM communication     |
+	#|                   | before memory is up       |
+	#| I2C0              | Touchscreen               |
+	#| I2C1              | Trackpad                  |
+	#| I2C2              | Pen                       |
+	#| I2C3              | Audio                     |
+	#+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.chipset_lockdown = CHIPSET_LOCKDOWN_COREBOOT,
+		.gspi[0] = {
+			.speed_mhz = 1,
+			.early_init = 1,
+		},
+		.i2c[0] = {
 			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 195,
-			.scl_hcnt = 90,
-			.sda_hold = 36,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 185,
+				.scl_hcnt = 90,
+				.sda_hold = 36,
+			},
+		},
+		.i2c[1] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 185,
+				.scl_hcnt = 90,
+				.sda_hold = 36,
+			},
+			.early_init = 1,
+		},
+		.i2c[2] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 185,
+				.scl_hcnt = 100,
+				.sda_hold = 36,
+			},
+		},
+		.i2c[3] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 195,
+				.scl_hcnt = 90,
+				.sda_hold = 36,
+			},
 		},
-	}"
-
-	# Use GSPI0 for cr50 TPM. Early init is required to set up a BAR for TPM
-	# communication before memory is up.
-	register "gspi[0]" = "{
-		 .speed_mhz = 1,
-		 .early_init = 1,
 	}"
 
 	# Must leave UART0 enabled or SD/eMMC will not work as PCI
@@ -270,9 +285,6 @@ chip soc/intel/skylake
 	register "tcc_offset" = "10"     # TCC of 90C
 	register "psys_pmax" = "101"
 
-	# Lock Down
-	register "chipset_lockdown" = "CHIPSET_LOCKDOWN_COREBOOT"
-
 	# PCH Trip Temperature in degree C
 	register "pch_trip_temp" = "75"
 
diff --git a/src/mainboard/google/poppy/variants/nautilus/devicetree.cb b/src/mainboard/google/poppy/variants/nautilus/devicetree.cb
index 7cf764e755..39d7353f58 100644
--- a/src/mainboard/google/poppy/variants/nautilus/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/nautilus/devicetree.cb
@@ -179,80 +179,97 @@ chip soc/intel/skylake
 	register "usb3_ports[2]" = "USB3_PORT_DEFAULT(OC_SKIP)"	# Type-A Port
 	register "usb3_ports[3]" = "USB3_PORT_EMPTY"		# Empty
 
-	# Touchscreen
-	register "i2c_voltage[0]" = "I2C_VOLTAGE_3V3"
-	register "i2c[0]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| chipset_lockdown  | CHIPSET_LOCKDOWN_COREBOOT |
+	#| I2C0              | Touchscreen               |
+	#| I2C1              | cr50 TPM. Early init is   |
+	#|                   | required to set up a BAR  |
+	#|                   | for TPM communication     |
+	#|                   | before memory is up       |
+	#| I2C2              | Trackpad                  |
+	#| I2C3              | Pen                       |
+	#| I2C4              | Camera                    |
+	#| I2C5              | Audio                     |
+	#+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.chipset_lockdown = CHIPSET_LOCKDOWN_COREBOOT,
+		.i2c[0] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 180,
+				.scl_hcnt = 90,
+				.sda_hold = 36,
+			},
+		},
+		.i2c[1] = {
+			.early_init = 1,
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 185,
+				.scl_hcnt = 90,
+				.sda_hold = 36,
+			},
+		},
+		.i2c[2] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 190,
+				.scl_hcnt = 100,
+				.sda_hold = 36,
+			},
+		},
+		.i2c[3] = {
 			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 180,
-			.scl_hcnt = 90,
-			.sda_hold = 36,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 185,
+				.scl_hcnt = 90,
+				.sda_hold = 36,
+			},
+		},
+		.i2c[4] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 190,
+				.scl_hcnt = 100,
+				.sda_hold = 36,
+			},
+		},
+		.i2c[5] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 190,
+				.scl_hcnt = 100,
+				.sda_hold = 36,
+			},
 		},
 	}"
 
+	# Touch Screen
+	register "i2c_voltage[0]" = "I2C_VOLTAGE_3V3"
+
 	# H1
 	register "i2c_voltage[1]" = "I2C_VOLTAGE_3V3"
-	# Configure I2C1 for cr50 TPM. Early init is required to set up a BAR
-	# for TPM communication before memory is up.
-	register "i2c[1]" = "{
-		.early_init = 1,
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 185,
-			.scl_hcnt = 90,
-			.sda_hold = 36,
-		},
-	}"
 
 	# Trackpad
 	register "i2c_voltage[2]" = "I2C_VOLTAGE_1V8"
-	register "i2c[2]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 190,
-			.scl_hcnt = 100,
-			.sda_hold = 36,
-		},
-	}"
 
 	# Pen
 	register "i2c_voltage[3]" = "I2C_VOLTAGE_1V8"
-	register "i2c[3]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 185,
-			.scl_hcnt = 90,
-			.sda_hold = 36,
-		},
-	}"
 
 	# Camera
 	register "i2c_voltage[4]" = "I2C_VOLTAGE_1V8"
-	register "i2c[4]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 190,
-			.scl_hcnt = 100,
-			.sda_hold = 36,
-		},
-	}"
 
 	# Audio
 	register "i2c_voltage[5]" = "I2C_VOLTAGE_1V8"
-	register "i2c[5]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 190,
-			.scl_hcnt = 100,
-			.sda_hold = 36,
-		},
-	}"
 
 	# Must leave UART0 enabled or SD/eMMC will not work as PCI
 	register "SerialIoDevMode" = "{
@@ -278,9 +295,6 @@ chip soc/intel/skylake
 	# Use default SD card detect GPIO configuration
 	register "sdcard_cd_gpio_default" = "GPP_E15"
 
-	# Lock Down
-	register "chipset_lockdown" = "CHIPSET_LOCKDOWN_COREBOOT"
-
 	# PCH Trip Temperature in degree C
 	register "pch_trip_temp" = "75"
 
diff --git a/src/mainboard/google/poppy/variants/nocturne/devicetree.cb b/src/mainboard/google/poppy/variants/nocturne/devicetree.cb
index 78edcc9faf..5b4c924296 100644
--- a/src/mainboard/google/poppy/variants/nocturne/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/nocturne/devicetree.cb
@@ -66,7 +66,6 @@ chip soc/intel/skylake
 	register "psys_pmax" = "45"
 	register "tcc_offset" = "10"
 	register "pch_trip_temp" = "75"
-	register "chipset_lockdown" = "CHIPSET_LOCKDOWN_COREBOOT"
 
 	register "pirqa_routing" = "PCH_IRQ11"
 	register "pirqb_routing" = "PCH_IRQ10"
@@ -176,59 +175,75 @@ chip soc/intel/skylake
 	register "usb3_ports[2]" = "USB3_PORT_EMPTY"		# Empty
 	register "usb3_ports[3]" = "USB3_PORT_EMPTY"		# Empty
 
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| chipset_lockdown  | CHIPSET_LOCKDOWN_COREBOOT |
+	#| GSPI0             | cr50 TPM. Early init is   |
+	#|                   | required to set up a BAR  |
+	#|                   | for TPM communication     |
+	#|                   | before memory is up       |
+	#| I2C0              | Touchscreen               |
+	#| I2C1              | Trackpad                  |
+	#| I2C3              | Camera                    |
+	#| I2C4              | Audio                     |
+	#| I2C5              | Rear Camera & SAR         |
+	#+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.chipset_lockdown = CHIPSET_LOCKDOWN_COREBOOT,
+		.i2c[0] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 98,
+			.fall_time_ns = 38,
+		},
+		.i2c[1] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 186,
+				.scl_hcnt = 93,
+				.sda_hold = 36,
+			},
+		},
+		.i2c[3] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 98,
+			.fall_time_ns = 38,
+		},
+		.i2c[4] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 176,
+				.scl_hcnt = 95,
+				.sda_hold = 36,
+			}
+		},
+		.i2c[5] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 98,
+			.fall_time_ns = 38,
+		},
+		.gspi[0] = {
+			.speed_mhz = 1,
+			.early_init = 1,
+		},
+	}"
 	# Touchscreen
 	register "i2c_voltage[0]" = "I2C_VOLTAGE_3V3"
-	register "i2c[0]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 98,
-		.fall_time_ns = 38,
-	}"
 
 	# Trackpad
 	register "i2c_voltage[1]" = "I2C_VOLTAGE_1V8"
-	register "i2c[1]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 186,
-			.scl_hcnt = 93,
-			.sda_hold = 36,
-		},
-	}"
 
 	# Front Camera
 	register "i2c_voltage[3]" = "I2C_VOLTAGE_1V8"
-	register "i2c[3]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 98,
-		.fall_time_ns = 38,
-	}"
 
 	# Audio
 	register "i2c_voltage[4]" = "I2C_VOLTAGE_1V8"
-	register "i2c[4]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 176,
-			.scl_hcnt = 95,
-			.sda_hold = 36,
-		}
-	}"
 
 	# Rear Camera & SAR
 	register "i2c_voltage[5]" = "I2C_VOLTAGE_1V8"
-	register "i2c[5]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 98,
-		.fall_time_ns = 38,
-	}"
-
-	# GSPI0 for cr50 TPM
-	register "gspi[0]" = "{
-		 .speed_mhz = 1,
-		 .early_init = 1,
-	}"
 
 	register "SerialIoDevMode" = "{
 		[PchSerialIoIndexI2C0]  = PchSerialIoPci,
diff --git a/src/mainboard/google/poppy/variants/soraka/devicetree.cb b/src/mainboard/google/poppy/variants/soraka/devicetree.cb
index af962881d8..762955df44 100644
--- a/src/mainboard/google/poppy/variants/soraka/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/soraka/devicetree.cb
@@ -170,68 +170,86 @@ chip soc/intel/skylake
 	register "usb3_ports[2]" = "USB3_PORT_DEFAULT(OC_SKIP)"	# Type-A Port
 	register "usb3_ports[3]" = "USB3_PORT_EMPTY"		# Empty
 
-	# Touchscreen
-	register "i2c_voltage[0]" = "I2C_VOLTAGE_3V3"
-	register "i2c[0]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| chipset_lockdown  | CHIPSET_LOCKDOWN_COREBOOT |
+	#| I2C0              | Touchscreen               |
+	#| I2C1              | cr50 TPM. Early init is   |
+	#|                   | required to set up a BAR  |
+	#|                   | for TPM communication     |
+	#|                   | before memory is up       |
+	#| I2C2              | Camera                    |
+	#| I2C4              | Camera                    |
+	#| I2C5              | Audio                     |
+	#+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.chipset_lockdown = CHIPSET_LOCKDOWN_COREBOOT,
+		.i2c[0] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 180,
+				.scl_hcnt = 85,
+				.sda_hold = 36,
+				},
+		},
+		.i2c[1] = {
+			.early_init = 1,
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 190,
+				.scl_hcnt = 90,
+				.sda_hold = 36,
+			},
+		},
+		.i2c[2] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 192,
+				.scl_hcnt = 90,
+				.sda_hold = 36,
+			},
+		},
+		.i2c[4] = {
+			.speed = I2C_SPEED_FAST,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 190,
+				.scl_hcnt = 90,
+				.sda_hold = 36,
+			},
+		},
+		.i2c[5] = {
 			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 180,
-			.scl_hcnt = 85,
-			.sda_hold = 36,
+			.speed_config[0] = {
+				.speed = I2C_SPEED_FAST,
+				.scl_lcnt = 190,
+				.scl_hcnt = 90,
+				.sda_hold = 36,
+			},
 		},
 	}"
 
+	# Touchscreen
+	register "i2c_voltage[0]" = "I2C_VOLTAGE_3V3"
+
 	# H1
-	register "i2c_voltage[1]" = "I2C_VOLTAGE_3V3"
 	# Configure I2C1 for cr50 TPM. Early init is required to set up a BAR
 	# for TPM communication before memory is up.
-	register "i2c[1]" = "{
-		.early_init = 1,
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 190,
-			.scl_hcnt = 90,
-			.sda_hold = 36,
-		},
-	}"
+	register "i2c_voltage[1]" = "I2C_VOLTAGE_3V3"
 
 	# Camera
 	register "i2c_voltage[2]" = "I2C_VOLTAGE_1V8"
-	register "i2c[2]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 192,
-			.scl_hcnt = 90,
-			.sda_hold = 36,
-		},
-	}"
 
 	# Camera
 	register "i2c_voltage[4]" = "I2C_VOLTAGE_1V8"
-	register "i2c[4]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 190,
-			.scl_hcnt = 90,
-			.sda_hold = 36,
-		},
-	}"
 
 	# Audio
 	register "i2c_voltage[5]" = "I2C_VOLTAGE_1V8"
-	register "i2c[5]" = "{
-		.speed = I2C_SPEED_FAST,
-		.speed_config[0] = {
-			.speed = I2C_SPEED_FAST,
-			.scl_lcnt = 190,
-			.scl_hcnt = 90,
-			.sda_hold = 36,
-		},
-	}"
 
 	# Must leave UART0 enabled or SD/eMMC will not work as PCI
 	register "SerialIoDevMode" = "{
@@ -257,9 +275,6 @@ chip soc/intel/skylake
 	# Use default SD card detect GPIO configuration
 	register "sdcard_cd_gpio_default" = "GPP_E15"
 
-	# Lock Down
-	register "chipset_lockdown" = "CHIPSET_LOCKDOWN_COREBOOT"
-
 	# PCH Trip Temperature in degree C
 	register "pch_trip_temp" = "75"
 
diff --git a/src/mainboard/google/reef/variants/baseboard/devicetree.cb b/src/mainboard/google/reef/variants/baseboard/devicetree.cb
index da47d42d32..da842ba6e6 100644
--- a/src/mainboard/google/reef/variants/baseboard/devicetree.cb
+++ b/src/mainboard/google/reef/variants/baseboard/devicetree.cb
@@ -76,41 +76,44 @@ chip soc/intel/apollolake
 	register "gpe0_dw2" = "PMC_GPE_N_63_32"
 	register "gpe0_dw3" = "PMC_GPE_SW_31_0"
 
-	# Enable I2C0 for audio codec at 400kHz
-	register "i2c[0]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 104,
-		.fall_time_ns = 52,
-	}"
-
-	# Enable I2C2 bus early for TPM at 400kHz
-	register "i2c[2]" = "{
-		.early_init = 1,
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 57,
-		.fall_time_ns = 28,
-	}"
-
-	# touchscreen at 400kHz
-	register "i2c[3]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 76,
-		.fall_time_ns = 164,
-	}"
-
-	# trackpad at 400kHz
-	register "i2c[4]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 114,
-		.fall_time_ns = 164,
-		.data_hold_time_ns = 350,
-	}"
-
-	# digitizer at 400kHz
-	register "i2c[5]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 152,
-		.fall_time_ns = 30,
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| I2C0              | Audio                     |
+	#| I2C2              | TPM                       |
+	#| I2C3              | Touchscreen               |
+	#| I2C4              | Trackpad                  |
+	#| I2C5              | Digitizer                 |
+	#+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.i2c[0] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 104,
+			.fall_time_ns = 52,
+		},
+		.i2c[2] = {
+			.early_init = 1,
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 57,
+			.fall_time_ns = 28,
+		},
+		.i2c[3] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 76,
+			.fall_time_ns = 164,
+		},
+		.i2c[4] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 114,
+			.fall_time_ns = 164,
+			.data_hold_time_ns = 350,
+		},
+		.i2c[5] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 152,
+			.fall_time_ns = 30,
+		},
 	}"
 
 	# Minimum SLP S3 assertion width 28ms.
diff --git a/src/mainboard/google/reef/variants/coral/devicetree.cb b/src/mainboard/google/reef/variants/coral/devicetree.cb
index c1b7067711..1608343d3c 100644
--- a/src/mainboard/google/reef/variants/coral/devicetree.cb
+++ b/src/mainboard/google/reef/variants/coral/devicetree.cb
@@ -76,41 +76,44 @@ chip soc/intel/apollolake
 	register "gpe0_dw2" = "PMC_GPE_N_63_32"
 	register "gpe0_dw3" = "PMC_GPE_SW_31_0"
 
-	# Enable I2C0 for audio codec at 400kHz
-	register "i2c[0]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 104,
-		.fall_time_ns = 52,
-	}"
-
-	# Enable I2C2 bus early for TPM at 400kHz
-	register "i2c[2]" = "{
-		.early_init = 1,
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 57,
-		.fall_time_ns = 28,
-	}"
-
-	# touchscreen at 400kHz
-	register "i2c[3]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 76,
-		.fall_time_ns = 164,
-	}"
-
-	# trackpad at 400kHz
-	register "i2c[4]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 114,
-		.fall_time_ns = 164,
-		.data_hold_time_ns = 350,
-	}"
-
-	# digitizer at 400kHz
-	register "i2c[5]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 152,
-		.fall_time_ns = 30,
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| I2C0              | Audio                     |
+	#| I2C2              | TPM                       |
+	#| I2C3              | Touchscreen               |
+	#| I2C4              | Trackpad                  |
+	#| I2C5              | Digitizer                 |
+	#+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.i2c[0] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 104,
+			.fall_time_ns = 52,
+		},
+		.i2c[2] = {
+			.early_init = 1,
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 57,
+			.fall_time_ns = 28,
+		},
+		.i2c[3] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 76,
+			.fall_time_ns = 164,
+		},
+		.i2c[4] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 114,
+			.fall_time_ns = 164,
+			.data_hold_time_ns = 350,
+		},
+		.i2c[5] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 152,
+			.fall_time_ns = 30,
+		},
 	}"
 
 	# Minimum SLP S3 assertion width 28ms.
diff --git a/src/mainboard/google/reef/variants/pyro/devicetree.cb b/src/mainboard/google/reef/variants/pyro/devicetree.cb
index cb297d9dce..c2d67aa17e 100644
--- a/src/mainboard/google/reef/variants/pyro/devicetree.cb
+++ b/src/mainboard/google/reef/variants/pyro/devicetree.cb
@@ -76,33 +76,37 @@ chip soc/intel/apollolake
 	register "gpe0_dw2" = "PMC_GPE_N_63_32"
 	register "gpe0_dw3" = "PMC_GPE_SW_31_0"
 
-	# Enable I2C0 for audio codec at 400kHz
-	register "i2c[0]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 104,
-		.fall_time_ns = 52,
-	}"
-
-	# Enable I2C2 bus early for TPM at 400kHz
-	register "i2c[2]" = "{
-		.early_init = 1,
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 50,
-		.fall_time_ns = 23,
-	}"
-
-	# touchscreen at 400kHz
-	register "i2c[3]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 76,
-		.fall_time_ns = 164,
-	}"
-
-	# trackpad at 400kHz
-	register "i2c[4]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 90,
-		.fall_time_ns = 164,
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| I2C0              | Audio                     |
+	#| I2C2              | TPM                       |
+	#| I2C3              | Touchscreen               |
+	#| I2C4              | Trackpad                  |
+	#+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.i2c[0] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 104,
+			.fall_time_ns = 52,
+		},
+		.i2c[2] = {
+			.early_init = 1,
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 50,
+			.fall_time_ns = 23,
+		},
+		.i2c[3] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 76,
+			.fall_time_ns = 164,
+		},
+		.i2c[4] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 90,
+			.fall_time_ns = 164,
+		},
 	}"
 
 	# Minimum SLP S3 assertion width 28ms.
diff --git a/src/mainboard/google/reef/variants/sand/devicetree.cb b/src/mainboard/google/reef/variants/sand/devicetree.cb
index 16889bb8c9..68f33ae074 100644
--- a/src/mainboard/google/reef/variants/sand/devicetree.cb
+++ b/src/mainboard/google/reef/variants/sand/devicetree.cb
@@ -73,40 +73,43 @@ chip soc/intel/apollolake
 	register "gpe0_dw2" = "PMC_GPE_N_63_32"
 	register "gpe0_dw3" = "PMC_GPE_SW_31_0"
 
-	# Enable I2C0 for audio codec at 400kHz
-	register "i2c[0]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 104,
-		.fall_time_ns = 52,
-	}"
-
-	# Enable I2C2 bus early for TPM at 400kHz
-	register "i2c[2]" = "{
-		.early_init = 1,
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 57,
-		.fall_time_ns = 28,
-	}"
-
-	# touchscreen at 400kHz
-	register "i2c[3]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 76,
-		.fall_time_ns = 164,
-	}"
-
-	# trackpad at 400kHz
-	register "i2c[4]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 114,
-		.fall_time_ns = 164,
-	}"
-
-	# digitizer at 400kHz
-	register "i2c[5]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 152,
-		.fall_time_ns = 30,
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| I2C0              | Audio                     |
+	#| I2C2              | TPM                       |
+	#| I2C3              | Touchscreen               |
+	#| I2C4              | Trackpad                  |
+	#| I2C5              | Digitizer                 |
+	#+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.i2c[0] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 104,
+			.fall_time_ns = 52,
+		},
+		.i2c[2] = {
+			.early_init = 1,
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 57,
+			.fall_time_ns = 28,
+		},
+		.i2c[3] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 76,
+			.fall_time_ns = 164,
+		},
+		.i2c[4] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 114,
+			.fall_time_ns = 164,
+		},
+		.i2c[5] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 152,
+			.fall_time_ns = 30,
+		},
 	}"
 
 	# Minimum SLP S3 assertion width 28ms.
diff --git a/src/mainboard/google/reef/variants/snappy/devicetree.cb b/src/mainboard/google/reef/variants/snappy/devicetree.cb
index 9719368080..aaf61de6ae 100644
--- a/src/mainboard/google/reef/variants/snappy/devicetree.cb
+++ b/src/mainboard/google/reef/variants/snappy/devicetree.cb
@@ -76,40 +76,43 @@ chip soc/intel/apollolake
 	register "gpe0_dw2" = "PMC_GPE_N_63_32"
 	register "gpe0_dw3" = "PMC_GPE_SW_31_0"
 
-	# Enable I2C0 for audio codec at 400kHz
-	register "i2c[0]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 44,
-		.fall_time_ns = 22,
-	}"
-
-	# Enable I2C2 bus early for TPM at 400kHz
-	register "i2c[2]" = "{
-		.early_init = 1,
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 40,
-		.fall_time_ns = 20,
-	}"
-
-	# touchscreen at 400kHz
-	register "i2c[3]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 70,
-		.fall_time_ns = 164,
-	}"
-
-	# trackpad at 400kHz
-	register "i2c[4]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 20,
-		.fall_time_ns = 164,
-	}"
-
-	# digitizer at 400kHz
-	register "i2c[5]" = "{
-		.speed = I2C_SPEED_FAST,
-		.rise_time_ns = 152,
-		.fall_time_ns = 30,
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| I2C0              | Audio                     |
+	#| I2C2              | TPM                       |
+	#| I2C3              | Touchscreen               |
+	#| I2C4              | Trackpad                  |
+	#| I2C5              | Digitizer                 |
+	#+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.i2c[0] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 44,
+			.fall_time_ns = 22,
+		},
+		.i2c[2] = {
+			.early_init = 1,
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 40,
+			.fall_time_ns = 20,
+		},
+		.i2c[3] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 70,
+			.fall_time_ns = 164,
+		},
+		.i2c[4] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 20,
+			.fall_time_ns = 164,
+		},
+		.i2c[5] = {
+			.speed = I2C_SPEED_FAST,
+			.rise_time_ns = 152,
+			.fall_time_ns = 30,
+		},
 	}"
 
 	# Minimum SLP S3 assertion width 28ms.
diff --git a/src/mainboard/google/zoombini/variants/baseboard/devicetree.cb b/src/mainboard/google/zoombini/variants/baseboard/devicetree.cb
index 6f70dfba2a..479f28015a 100644
--- a/src/mainboard/google/zoombini/variants/baseboard/devicetree.cb
+++ b/src/mainboard/google/zoombini/variants/baseboard/devicetree.cb
@@ -25,11 +25,20 @@ chip soc/intel/cannonlake
 	register "ScsEmmcHs400Enabled" = "1"
 	register "ScsSdCardEnabled" = "1"
 
-	# Use GSPI0 for cr50 TPM. Early init is required to set up a BAR for TPM
-	# communication before memory is up.
-	register "gspi[0]" = "{
-		.speed_mhz = 1,
-		.early_init = 1,
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| GSPI0             | cr50 TPM. Early init is   |
+	#|                   | required to set up a BAR  |
+	#|                   | for TPM communication     |
+	#|                   | before memory is up       |
+	#+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.gspi[0] = {
+			.speed_mhz = 1,
+			.early_init = 1,
+		},
 	}"
 
 	register "usb2_ports[0]" = "USB2_PORT_TYPE_C(OC0)"
diff --git a/src/mainboard/google/zoombini/variants/meowth/devicetree.cb b/src/mainboard/google/zoombini/variants/meowth/devicetree.cb
index 7d89b78e8b..adeedea701 100644
--- a/src/mainboard/google/zoombini/variants/meowth/devicetree.cb
+++ b/src/mainboard/google/zoombini/variants/meowth/devicetree.cb
@@ -34,11 +34,26 @@ chip soc/intel/cannonlake
 	register "ScsEmmcHs400Enabled" = "1"
 	register "ScsSdCardEnabled" = "1"
 
-	# Use GSPI0 for cr50 TPM. Early init is required to set up a BAR for TPM
-	# communication before memory is up.
-	register "gspi[0]" = "{
-		.speed_mhz = 1,
-		.early_init = 1,
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| GSPI0             | cr50 TPM. Early init is   |
+	#|                   | required to set up a BAR  |
+	#|                   | for TPM communication     |
+	#|                   | before memory is up       |
+	#| I2C0              | Touchscreen Digitizer     |
+	#+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.gspi[0] = {
+			.speed_mhz = 1,
+			.early_init = 1,
+		},
+		.i2c[0] = {
+			.speed = I2C_SPEED_FAST_PLUS,
+			.rise_time_ns = 98,
+			.fall_time_ns = 38,
+		},
 	}"
 
 	register "usb2_ports[0]" = "USB2_PORT_TYPE_C(OC2)"
@@ -55,13 +70,6 @@ chip soc/intel/cannonlake
 	register "usb3_ports[0]" = "USB3_PORT_DEFAULT(OC2)"
 	register "usb3_ports[1]" = "USB3_PORT_DEFAULT(OC3)"
 
-	# Touchscreen Digitizer
-	register "i2c[0]" = "{
-		.speed = I2C_SPEED_FAST_PLUS,
-		.rise_time_ns = 98,
-		.fall_time_ns = 38,
-	}"
-
 	register "PchHdaDspEnable" = "1"
 	register "PchHdaAudioLinkSsp0" = "1"
 	register "PchHdaAudioLinkSsp1" = "1"