soc/intel/skl: Replace dt `HeciEnabled` by `HECI1 disable` config

List of changes:

1. Drop `HeciEnabled` from dt and dt chip configuration.
2. Replace all logic that disables HECI1 based on the `HeciEnabled`
chip config with `DISABLE_HECI1_AT_PRE_BOOT` config.
3. Make dt CSE PCI device `on` by default.
4. Mainboards set DISABLE_HECI1_AT_PRE_BOOT=y to make Heci1
function disable at pre-boot instead of the dt policy that uses
`HeciEnabled = 0`.

Mainboards that choose to make HECI1 enable during boot don't override
`heci1 disable` config.

Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: I5c13fe4a78be44403a81c28b1676aecc26c58607
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60722
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

34 files changed, 44 insertions, 24 deletions

diff --git a/src/mainboard/51nb/x210/devicetree.cb b/src/mainboard/51nb/x210/devicetree.cb
index ac1b45d4eb..ab8787c32c 100644
--- a/src/mainboard/51nb/x210/devicetree.cb
+++ b/src/mainboard/51nb/x210/devicetree.cb
@@ -47,7 +47,6 @@ chip soc/intel/skylake
 	register "SsicPortEnable" = "0"
 	register "ScsEmmcHs400Enabled" = "0"
 	register "SkipExtGfxScan" = "1"
-	register "HeciEnabled" = "1"
 	register "SaGv" = "SaGv_Enabled"
 	register "PmConfigSlpS3MinAssert" = "2"		# 50ms
 	register "PmConfigSlpS4MinAssert" = "1"		# 1s
diff --git a/src/mainboard/asrock/h110m/Kconfig b/src/mainboard/asrock/h110m/Kconfig
index 3a55f9e1f3..7f84adb5b7 100644
--- a/src/mainboard/asrock/h110m/Kconfig
+++ b/src/mainboard/asrock/h110m/Kconfig
@@ -17,6 +17,9 @@ config BOARD_SPECIFIC_OPTIONS
 	select RT8168_SET_LED_MODE
 	select MAINBOARD_HAS_LPC_TPM
 
+config DISABLE_HECI1_AT_PRE_BOOT
+	default y
+
 config MAINBOARD_DIR
 	default "asrock/h110m"
 
diff --git a/src/mainboard/asrock/h110m/devicetree.cb b/src/mainboard/asrock/h110m/devicetree.cb
index aed9184e99..a45127c0b3 100644
--- a/src/mainboard/asrock/h110m/devicetree.cb
+++ b/src/mainboard/asrock/h110m/devicetree.cb
@@ -101,9 +101,6 @@ chip soc/intel/skylake
 		device pci 15.3 off end # I2C #3
 		device pci 16.0 on      # Management Engine Interface 1
 			subsystemid 0x1849 0xa131
-
-			# FIXME: does not match devicetree!
-			register "HeciEnabled" = "0"
 		end
 		device pci 16.1 off end # Management Engine Interface 2
 		device pci 16.2 off end # Management Engine IDE-R
diff --git a/src/mainboard/clevo/kbl-u/variants/n13xwu/devicetree.cb b/src/mainboard/clevo/kbl-u/variants/n13xwu/devicetree.cb
index db4d1acb75..d22f57419a 100644
--- a/src/mainboard/clevo/kbl-u/variants/n13xwu/devicetree.cb
+++ b/src/mainboard/clevo/kbl-u/variants/n13xwu/devicetree.cb
@@ -60,9 +60,7 @@ chip soc/intel/skylake
 			register "usb3_ports[3]" = "USB3_PORT_DEFAULT(OC_SKIP)"	# Type-A, left
 		end
 		device ref thermal	on	end
-		device ref heci1	on
-			register "HeciEnabled" = "1"
-		end
+		device ref heci1	on	end
 		device ref sata		on
 			register "SataSalpSupport" = "0"
 			# Ports
diff --git a/src/mainboard/facebook/monolith/Kconfig b/src/mainboard/facebook/monolith/Kconfig
index 50738f49d9..0fb05a1ef7 100644
--- a/src/mainboard/facebook/monolith/Kconfig
+++ b/src/mainboard/facebook/monolith/Kconfig
@@ -13,6 +13,9 @@ config BOARD_SPECIFIC_OPTIONS
 	select INTEL_GMA_HAVE_VBT
 	select VPD
 
+config DISABLE_HECI1_AT_PRE_BOOT
+	default y
+
 config CBFS_SIZE
 	default 0x00900000
 
diff --git a/src/mainboard/facebook/monolith/devicetree.cb b/src/mainboard/facebook/monolith/devicetree.cb
index 023ace9224..05bcc12257 100644
--- a/src/mainboard/facebook/monolith/devicetree.cb
+++ b/src/mainboard/facebook/monolith/devicetree.cb
@@ -36,7 +36,6 @@ chip soc/intel/skylake
 	register "ScsEmmcHs400Enabled" = "1"
 	register "SkipExtGfxScan" = "1"
 	register "SaGv" = "SaGv_Enabled"
-	register "HeciEnabled" = "0"
 
 	register "SataSalpSupport" = "1"
 	register "SataPortsEnable" = "{ \
@@ -224,6 +223,7 @@ chip soc/intel/skylake
 		device pci 14.0 on  end # USB xHCI
 		device pci 14.1 on  end # USB xDCI (OTG)
 		device pci 14.2 on  end # Thermal Subsystem
+		device pci 16.0 on  end # Management Engine Interface 1
 		device pci 17.0 on  end # SATA
 		device pci 1c.2 on  end # PCI Express Port 3 x1 baseboard WWAN
 		device pci 1c.5 on  end # PCI Express Port 6 x1 baseboard i210
diff --git a/src/mainboard/google/eve/Kconfig b/src/mainboard/google/eve/Kconfig
index 007cbc7287..5e1b2f7ea5 100644
--- a/src/mainboard/google/eve/Kconfig
+++ b/src/mainboard/google/eve/Kconfig
@@ -24,6 +24,9 @@ config BOARD_SPECIFIC_OPTIONS
 	select SYSTEM_TYPE_CONVERTIBLE
 	select HAVE_SPD_IN_CBFS
 
+config DISABLE_HECI1_AT_PRE_BOOT
+	default y
+
 config VBOOT
 	select EC_GOOGLE_CHROMEEC_SWITCHES
 	select HAS_RECOVERY_MRC_CACHE
diff --git a/src/mainboard/google/eve/devicetree.cb b/src/mainboard/google/eve/devicetree.cb
index c7310052db..1e9ffd9255 100644
--- a/src/mainboard/google/eve/devicetree.cb
+++ b/src/mainboard/google/eve/devicetree.cb
@@ -43,7 +43,6 @@ chip soc/intel/skylake
 	register "SsicPortEnable" = "0"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "SkipExtGfxScan" = "1"
-	register "HeciEnabled" = "0"
 	register "SaGv" = "SaGv_Enabled"
 	register "PmConfigSlpS3MinAssert" = "2"        # 50ms
 	register "PmConfigSlpS4MinAssert" = "1"        # 1s
diff --git a/src/mainboard/google/fizz/Kconfig b/src/mainboard/google/fizz/Kconfig
index afb28310e9..cf5dd19a16 100644
--- a/src/mainboard/google/fizz/Kconfig
+++ b/src/mainboard/google/fizz/Kconfig
@@ -24,6 +24,9 @@ config BOARD_GOOGLE_BASEBOARD_FIZZ
 	select RT8168_SUPPORT_LEGACY_VPD_MAC
 	select RT8168_SET_LED_MODE
 
+config DISABLE_HECI1_AT_PRE_BOOT
+	default y
+
 config BOARD_GOOGLE_FIZZ
 	select BOARD_GOOGLE_BASEBOARD_FIZZ
 
diff --git a/src/mainboard/google/fizz/variants/baseboard/devicetree.cb b/src/mainboard/google/fizz/variants/baseboard/devicetree.cb
index ceca5f14ce..5ecc77bc77 100644
--- a/src/mainboard/google/fizz/variants/baseboard/devicetree.cb
+++ b/src/mainboard/google/fizz/variants/baseboard/devicetree.cb
@@ -74,7 +74,6 @@ chip soc/intel/skylake
 	register "SsicPortEnable" = "0"
 	register "ScsEmmcHs400Enabled" = "0"
 	register "SkipExtGfxScan" = "1"
-	register "HeciEnabled" = "0"
 	register "SaGv" = "SaGv_Enabled"
 	register "PmConfigSlpS3MinAssert" = "2"        # 50ms
 	register "PmConfigSlpS4MinAssert" = "1"        # 1s
diff --git a/src/mainboard/google/glados/Kconfig b/src/mainboard/google/glados/Kconfig
index 04a48f7275..8ed327e9f7 100644
--- a/src/mainboard/google/glados/Kconfig
+++ b/src/mainboard/google/glados/Kconfig
@@ -21,6 +21,9 @@ config BOARD_GOOGLE_BASEBOARD_GLADOS
 	select SOC_INTEL_SKYLAKE
 	select SYSTEM_TYPE_LAPTOP
 
+config DISABLE_HECI1_AT_PRE_BOOT
+	default y
+
 config BOARD_GOOGLE_ASUKA
 	select BOARD_GOOGLE_BASEBOARD_GLADOS
 	select DRIVERS_GENERIC_MAX98357A
diff --git a/src/mainboard/google/glados/devicetree.cb b/src/mainboard/google/glados/devicetree.cb
index a200cfb8bd..9a3e619499 100644
--- a/src/mainboard/google/glados/devicetree.cb
+++ b/src/mainboard/google/glados/devicetree.cb
@@ -42,7 +42,6 @@ chip soc/intel/skylake
 	register "SsicPortEnable" = "0"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "SkipExtGfxScan" = "1"
-	register "HeciEnabled" = "0"
 	register "SaGv" = "SaGv_Enabled"
 	register "PmConfigSlpS3MinAssert" = "2"        # 50ms
 	register "PmConfigSlpS4MinAssert" = "4"        # 4s
diff --git a/src/mainboard/google/poppy/Kconfig b/src/mainboard/google/poppy/Kconfig
index 4a19f865b3..87f39339ab 100644
--- a/src/mainboard/google/poppy/Kconfig
+++ b/src/mainboard/google/poppy/Kconfig
@@ -99,6 +99,9 @@ config BOARD_GOOGLE_SORAKA
 
 if BOARD_GOOGLE_BASEBOARD_POPPY
 
+config DISABLE_HECI1_AT_PRE_BOOT
+	default y
+
 config CHROMEOS_WIFI_SAR
 	bool
 	depends on CHROMEOS
diff --git a/src/mainboard/google/poppy/variants/atlas/devicetree.cb b/src/mainboard/google/poppy/variants/atlas/devicetree.cb
index 39b7d9f9e0..d26f6bd28a 100644
--- a/src/mainboard/google/poppy/variants/atlas/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/atlas/devicetree.cb
@@ -50,7 +50,6 @@ chip soc/intel/skylake
 	register "SsicPortEnable" = "0"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "SkipExtGfxScan" = "1"
-	register "HeciEnabled" = "0"
 	register "SaGv" = "SaGv_Enabled"
 	register "PmConfigSlpS3MinAssert" = "2"        # 50ms
 	register "PmConfigSlpS4MinAssert" = "1"        # 1s
diff --git a/src/mainboard/google/poppy/variants/baseboard/devicetree.cb b/src/mainboard/google/poppy/variants/baseboard/devicetree.cb
index 4d145e18e7..db4aeebb9f 100644
--- a/src/mainboard/google/poppy/variants/baseboard/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/baseboard/devicetree.cb
@@ -38,7 +38,6 @@ chip soc/intel/skylake
 	register "SsicPortEnable" = "0"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "SkipExtGfxScan" = "1"
-	register "HeciEnabled" = "0"
 	register "SaGv" = "SaGv_Enabled"
 	register "PmConfigSlpS3MinAssert" = "2"        # 50ms
 	register "PmConfigSlpS4MinAssert" = "1"        # 1s
diff --git a/src/mainboard/google/poppy/variants/nami/devicetree.cb b/src/mainboard/google/poppy/variants/nami/devicetree.cb
index 6d7541e4d7..7609e004cc 100644
--- a/src/mainboard/google/poppy/variants/nami/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/nami/devicetree.cb
@@ -37,7 +37,6 @@ chip soc/intel/skylake
 	register "SsicPortEnable" = "0"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "SkipExtGfxScan" = "1"
-	register "HeciEnabled" = "0"
 	register "SaGv" = "SaGv_Enabled"
 	register "PmConfigSlpS3MinAssert" = "2"        # 50ms
 	register "PmConfigSlpS4MinAssert" = "1"        # 1s
diff --git a/src/mainboard/google/poppy/variants/nautilus/devicetree.cb b/src/mainboard/google/poppy/variants/nautilus/devicetree.cb
index 068a031f1d..b8a1812751 100644
--- a/src/mainboard/google/poppy/variants/nautilus/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/nautilus/devicetree.cb
@@ -38,7 +38,6 @@ chip soc/intel/skylake
 	register "SsicPortEnable" = "0"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "SkipExtGfxScan" = "1"
-	register "HeciEnabled" = "0"
 	register "SaGv" = "SaGv_Enabled"
 	register "PmConfigSlpS3MinAssert" = "2"        # 50ms
 	register "PmConfigSlpS4MinAssert" = "1"        # 1s
diff --git a/src/mainboard/google/poppy/variants/nocturne/devicetree.cb b/src/mainboard/google/poppy/variants/nocturne/devicetree.cb
index e4e01585bd..03336f2e47 100644
--- a/src/mainboard/google/poppy/variants/nocturne/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/nocturne/devicetree.cb
@@ -43,7 +43,6 @@ chip soc/intel/skylake
 	register "SsicPortEnable" = "0"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "SkipExtGfxScan" = "1"
-	register "HeciEnabled" = "0"
 	register "SaGv" = "SaGv_Enabled"
 	register "PmConfigSlpS3MinAssert" = "2"        # 50ms
 	register "PmConfigSlpS4MinAssert" = "1"        # 1s
diff --git a/src/mainboard/google/poppy/variants/rammus/devicetree.cb b/src/mainboard/google/poppy/variants/rammus/devicetree.cb
index ff06d6acfe..c6c2d3df60 100644
--- a/src/mainboard/google/poppy/variants/rammus/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/rammus/devicetree.cb
@@ -50,7 +50,6 @@ chip soc/intel/skylake
 	register "SsicPortEnable" = "0"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "SkipExtGfxScan" = "1"
-	register "HeciEnabled" = "0"
 	register "SaGv" = "SaGv_Enabled"
 	register "PmConfigSlpS3MinAssert" = "2"        # 50ms
 	register "PmConfigSlpS4MinAssert" = "1"        # 1s
diff --git a/src/mainboard/google/poppy/variants/soraka/devicetree.cb b/src/mainboard/google/poppy/variants/soraka/devicetree.cb
index 9be000f0d3..5c347924df 100644
--- a/src/mainboard/google/poppy/variants/soraka/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/soraka/devicetree.cb
@@ -38,7 +38,6 @@ chip soc/intel/skylake
 	register "SsicPortEnable" = "0"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "SkipExtGfxScan" = "1"
-	register "HeciEnabled" = "0"
 	register "SaGv" = "SaGv_Enabled"
 	register "PmConfigSlpS3MinAssert" = "2"        # 50ms
 	register "PmConfigSlpS4MinAssert" = "1"        # 1s
diff --git a/src/mainboard/hp/280_g2/Kconfig b/src/mainboard/hp/280_g2/Kconfig
index df3f626e9f..0db753d2cf 100644
--- a/src/mainboard/hp/280_g2/Kconfig
+++ b/src/mainboard/hp/280_g2/Kconfig
@@ -16,6 +16,9 @@ config BOARD_SPECIFIC_OPTIONS
 	select SPD_READ_BY_WORD
 	select SUPERIO_ITE_COMMON_PRE_RAM
 
+config DISABLE_HECI1_AT_PRE_BOOT
+	default y
+
 config MAINBOARD_DIR
 	default "hp/280_g2"
 
diff --git a/src/mainboard/intel/kblrvp/Kconfig b/src/mainboard/intel/kblrvp/Kconfig
index 2abf8329f6..6b60ac46ea 100644
--- a/src/mainboard/intel/kblrvp/Kconfig
+++ b/src/mainboard/intel/kblrvp/Kconfig
@@ -31,6 +31,9 @@ config BOARD_INTEL_KBLRVP11
 
 if BOARD_INTEL_KBLRVP_COMMON
 
+config DISABLE_HECI1_AT_PRE_BOOT
+	default y
+
 config VBOOT
 	select VBOOT_LID_SWITCH
 
diff --git a/src/mainboard/intel/kblrvp/variants/baseboard/devicetree.cb b/src/mainboard/intel/kblrvp/variants/baseboard/devicetree.cb
index e17c8b71f3..bae6198118 100644
--- a/src/mainboard/intel/kblrvp/variants/baseboard/devicetree.cb
+++ b/src/mainboard/intel/kblrvp/variants/baseboard/devicetree.cb
@@ -20,7 +20,6 @@ chip soc/intel/skylake
 	register "dptf_enable" = "1"
 
 	# FSP Configuration
-	register "HeciEnabled" = "0"
 	register "IoBufferOwnership" = "0"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "SkipExtGfxScan" = "1"
diff --git a/src/mainboard/intel/kunimitsu/Kconfig b/src/mainboard/intel/kunimitsu/Kconfig
index 85f9e54d82..22fffb0203 100644
--- a/src/mainboard/intel/kunimitsu/Kconfig
+++ b/src/mainboard/intel/kunimitsu/Kconfig
@@ -21,6 +21,9 @@ config BOARD_SPECIFIC_OPTIONS
 	select SOC_INTEL_SKYLAKE
 	select HAVE_SPD_IN_CBFS
 
+config DISABLE_HECI1_AT_PRE_BOOT
+	default y
+
 config VBOOT
 	select EC_GOOGLE_CHROMEEC_SWITCHES
 	select VBOOT_LID_SWITCH
diff --git a/src/mainboard/intel/kunimitsu/devicetree.cb b/src/mainboard/intel/kunimitsu/devicetree.cb
index ba4835eb25..deb9f38c7a 100644
--- a/src/mainboard/intel/kunimitsu/devicetree.cb
+++ b/src/mainboard/intel/kunimitsu/devicetree.cb
@@ -25,7 +25,6 @@ chip soc/intel/skylake
 	register "IoBufferOwnership" = "3"
 	register "ScsEmmcHs400Enabled" = "1"
 	register "SkipExtGfxScan" = "1"
-	register "HeciEnabled" = "0"
 	register "SaGv" = "SaGv_Enabled"
 
 	# Enabling SLP_S3#, SLP_S4#, SLP_SUS and SLP_A Stretch
diff --git a/src/mainboard/intel/saddlebrook/Kconfig b/src/mainboard/intel/saddlebrook/Kconfig
index decbb9688a..5d16d22875 100644
--- a/src/mainboard/intel/saddlebrook/Kconfig
+++ b/src/mainboard/intel/saddlebrook/Kconfig
@@ -16,6 +16,9 @@ config BOARD_SPECIFIC_OPTIONS
 	select HAVE_CMOS_DEFAULT
 	select MAINBOARD_USES_IFD_GBE_REGION
 
+config DISABLE_HECI1_AT_PRE_BOOT
+	default y
+
 config MAINBOARD_DIR
 	default "intel/saddlebrook"
 
diff --git a/src/mainboard/kontron/bsl6/Kconfig b/src/mainboard/kontron/bsl6/Kconfig
index 9fae364316..78e81c4573 100644
--- a/src/mainboard/kontron/bsl6/Kconfig
+++ b/src/mainboard/kontron/bsl6/Kconfig
@@ -15,6 +15,9 @@ config BOARD_KONTRON_BSL6_COMMON
 	select MAINBOARD_HAS_LIBGFXINIT
 	select DRIVERS_I2C_NCT7802Y
 
+config DISABLE_HECI1_AT_PRE_BOOT
+	default y
+
 config BOARD_KONTRON_BSL6
 	select BOARD_KONTRON_BSL6_COMMON
 	select HAVE_ACPI_RESUME
diff --git a/src/mainboard/libretrend/lt1000/devicetree.cb b/src/mainboard/libretrend/lt1000/devicetree.cb
index d047f76349..39c2e33a28 100644
--- a/src/mainboard/libretrend/lt1000/devicetree.cb
+++ b/src/mainboard/libretrend/lt1000/devicetree.cb
@@ -46,7 +46,6 @@ chip soc/intel/skylake
 	register "SsicPortEnable" = "0"
 	register "ScsEmmcHs400Enabled" = "0"
 	register "SkipExtGfxScan" = "1"
-	register "HeciEnabled" = "1"
 	register "SaGv" = "SaGv_Enabled"
 	register "PmConfigSlpS3MinAssert" = "2"        # 50ms
 	register "PmConfigSlpS4MinAssert" = "1"        # 1s
diff --git a/src/mainboard/protectli/vault_kbl/devicetree.cb b/src/mainboard/protectli/vault_kbl/devicetree.cb
index a264c6b276..feb8b9f1e3 100644
--- a/src/mainboard/protectli/vault_kbl/devicetree.cb
+++ b/src/mainboard/protectli/vault_kbl/devicetree.cb
@@ -34,7 +34,6 @@ chip soc/intel/skylake
 	register "SsicPortEnable" = "0"
 	register "ScsEmmcHs400Enabled" = "0"
 	register "SkipExtGfxScan" = "1"
-	register "HeciEnabled" = "1"
 	register "SaGv" = "SaGv_Enabled"
 	register "IslVrCmd" = "2"
 	register "PmConfigSlpS3MinAssert" = "2"		# 50ms
diff --git a/src/mainboard/purism/librem_skl/Kconfig b/src/mainboard/purism/librem_skl/Kconfig
index 4c6f6a8ade..e20a002716 100644
--- a/src/mainboard/purism/librem_skl/Kconfig
+++ b/src/mainboard/purism/librem_skl/Kconfig
@@ -18,6 +18,9 @@ config BOARD_PURISM_BASEBOARD_LIBREM_SKL
 
 if BOARD_PURISM_BASEBOARD_LIBREM_SKL
 
+config DISABLE_HECI1_AT_PRE_BOOT
+	default y
+
 config VARIANT_DIR
 	default "librem13" if BOARD_PURISM_LIBREM13_V2 || BOARD_PURISM_LIBREM13_V4
 	default "librem15" if BOARD_PURISM_LIBREM15_V3 || BOARD_PURISM_LIBREM15_V4
diff --git a/src/mainboard/purism/librem_skl/devicetree.cb b/src/mainboard/purism/librem_skl/devicetree.cb
index dfa894b3d4..ef898b2a19 100644
--- a/src/mainboard/purism/librem_skl/devicetree.cb
+++ b/src/mainboard/purism/librem_skl/devicetree.cb
@@ -52,7 +52,6 @@ chip soc/intel/skylake
 	register "SsicPortEnable" = "0"
 	register "ScsEmmcHs400Enabled" = "0"
 	register "SkipExtGfxScan" = "1"
-	register "HeciEnabled" = "0"
 	register "SaGv" = "SaGv_Enabled"
 	register "PmConfigSlpS3MinAssert" = "2"		# 50ms
 	register "PmConfigSlpS4MinAssert" = "1"		# 1s
diff --git a/src/mainboard/razer/blade_stealth_kbl/devicetree.cb b/src/mainboard/razer/blade_stealth_kbl/devicetree.cb
index 3d311a3dd4..3b2343b92c 100644
--- a/src/mainboard/razer/blade_stealth_kbl/devicetree.cb
+++ b/src/mainboard/razer/blade_stealth_kbl/devicetree.cb
@@ -31,7 +31,6 @@ chip soc/intel/skylake
 	register "SsicPortEnable" = "0"
 	register "ScsEmmcHs400Enabled" = "0"
 	register "SkipExtGfxScan" = "1"
-	register "HeciEnabled" = "1"
 	register "SaGv" = "SaGv_Enabled"
 	register "PmConfigSlpS3MinAssert" = "2"		# 50ms
 	register "PmConfigSlpS4MinAssert" = "1"		# 1s
diff --git a/src/mainboard/supermicro/x11-lga1151-series/Kconfig b/src/mainboard/supermicro/x11-lga1151-series/Kconfig
index eb4a65e750..10606559bd 100644
--- a/src/mainboard/supermicro/x11-lga1151-series/Kconfig
+++ b/src/mainboard/supermicro/x11-lga1151-series/Kconfig
@@ -18,6 +18,9 @@ config BOARD_SUPERMICRO_BASEBOARD_X11_LGA1151_SERIES
 
 if BOARD_SUPERMICRO_BASEBOARD_X11_LGA1151_SERIES
 
+config DISABLE_HECI1_AT_PRE_BOOT
+	default y
+
 config MAINBOARD_FAMILY
 	string
 	default "Supermicro_X11_LGA1151_SERIES"
diff --git a/src/mainboard/system76/kbl-u/Kconfig b/src/mainboard/system76/kbl-u/Kconfig
index a714bb88fa..cb45bf39c7 100644
--- a/src/mainboard/system76/kbl-u/Kconfig
+++ b/src/mainboard/system76/kbl-u/Kconfig
@@ -18,6 +18,9 @@ config BOARD_SPECIFIC_OPTIONS
 	select SPD_READ_BY_WORD
 	select SYSTEM_TYPE_LAPTOP
 
+config DISABLE_HECI1_AT_PRE_BOOT
+	default y
+
 config MAINBOARD_DIR
 	default "system76/kbl-u"