From 0cca6e24b741c4e46cc85ff04635fe4df05cf949 Mon Sep 17 00:00:00 2001
From: Elyes HAOUAS <ehaouas@noos.fr>
Date: Tue, 13 Nov 2018 14:23:29 +0100
Subject: ACPI: Fix DSDT's revision field

DSDT revision is =1 for ACPI v1 and =2 for greater ACPI version.
This will cause the AML interpreter to use 32-bit integers and math
if the version is 1, and 64-bit if the version is >=2.
Current spec version is 2 for ACPI 6.2-a.

Change-Id: I77372882d5c77b7ed52dcdd88028403df6f6fa7f
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/29626
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 src/mainboard/adi/rcc-dff/dsdt.asl                 | 2 +-
 src/mainboard/aopen/dxplplusu/dsdt.asl             | 2 +-
 src/mainboard/apple/macbook21/dsdt.asl             | 2 +-
 src/mainboard/apple/macbookair4_2/dsdt.asl         | 2 +-
 src/mainboard/asrock/b75pro3-m/dsdt.asl            | 2 +-
 src/mainboard/asrock/g41c-gs/dsdt.asl              | 2 +-
 src/mainboard/asrock/h81m-hds/dsdt.asl             | 2 +-
 src/mainboard/asus/kcma-d8/dsdt.asl                | 2 +-
 src/mainboard/asus/kgpe-d16/dsdt.asl               | 2 +-
 src/mainboard/asus/maximus_iv_gene-z/dsdt.asl      | 2 +-
 src/mainboard/asus/p5gc-mx/dsdt.asl                | 2 +-
 src/mainboard/asus/p5qc/dsdt.asl                   | 2 +-
 src/mainboard/asus/p8h61-m_lx/dsdt.asl             | 2 +-
 src/mainboard/asus/p8h61-m_pro/dsdt.asl            | 2 +-
 src/mainboard/compulab/intense_pc/dsdt.asl         | 2 +-
 src/mainboard/esd/atom15/dsdt.asl                  | 2 +-
 src/mainboard/facebook/watson/dsdt.asl             | 2 +-
 src/mainboard/foxconn/d41s/dsdt.asl                | 2 +-
 src/mainboard/foxconn/g41s-k/dsdt.asl              | 2 +-
 src/mainboard/getac/p470/dsdt.asl                  | 2 +-
 src/mainboard/gigabyte/ga-945gcm-s2l/dsdt.asl      | 2 +-
 src/mainboard/gigabyte/ga-b75m-d3h/dsdt.asl        | 2 +-
 src/mainboard/gigabyte/ga-b75m-d3v/dsdt.asl        | 2 +-
 src/mainboard/gigabyte/ga-g41m-es2l/dsdt.asl       | 2 +-
 src/mainboard/gigabyte/ga-h61m-s2pv/dsdt.asl       | 2 +-
 src/mainboard/google/auron/dsdt.asl                | 2 +-
 src/mainboard/google/beltino/dsdt.asl              | 2 +-
 src/mainboard/google/butterfly/dsdt.asl            | 2 +-
 src/mainboard/google/cyan/dsdt.asl                 | 2 +-
 src/mainboard/google/eve/dsdt.asl                  | 2 +-
 src/mainboard/google/fizz/dsdt.asl                 | 2 +-
 src/mainboard/google/glados/dsdt.asl               | 2 +-
 src/mainboard/google/jecht/dsdt.asl                | 2 +-
 src/mainboard/google/link/dsdt.asl                 | 2 +-
 src/mainboard/google/octopus/dsdt.asl              | 2 +-
 src/mainboard/google/parrot/dsdt.asl               | 2 +-
 src/mainboard/google/poppy/dsdt.asl                | 2 +-
 src/mainboard/google/rambi/dsdt.asl                | 2 +-
 src/mainboard/google/reef/dsdt.asl                 | 2 +-
 src/mainboard/google/sarien/dsdt.asl               | 2 +-
 src/mainboard/google/slippy/dsdt.asl               | 2 +-
 src/mainboard/google/stout/dsdt.asl                | 2 +-
 src/mainboard/google/zoombini/dsdt.asl             | 2 +-
 src/mainboard/hp/2570p/dsdt.asl                    | 2 +-
 src/mainboard/hp/2760p/dsdt.asl                    | 2 +-
 src/mainboard/hp/8460p/dsdt.asl                    | 2 +-
 src/mainboard/hp/8470p/dsdt.asl                    | 2 +-
 src/mainboard/hp/8770w/dsdt.asl                    | 2 +-
 src/mainboard/hp/compaq_8200_elite_sff/dsdt.asl    | 2 +-
 src/mainboard/hp/folio_9470m/dsdt.asl              | 2 +-
 src/mainboard/hp/revolve_810_g1/dsdt.asl           | 2 +-
 src/mainboard/ibase/mb899/dsdt.asl                 | 2 +-
 src/mainboard/intel/apollolake_rvp/dsdt.asl        | 2 +-
 src/mainboard/intel/baskingridge/dsdt.asl          | 2 +-
 src/mainboard/intel/bayleybay_fsp/dsdt.asl         | 2 +-
 src/mainboard/intel/camelbackmountain_fsp/dsdt.asl | 2 +-
 src/mainboard/intel/cannonlake_rvp/dsdt.asl        | 2 +-
 src/mainboard/intel/coffeelake_rvp/dsdt.asl        | 2 +-
 src/mainboard/intel/d510mo/dsdt.asl                | 2 +-
 src/mainboard/intel/d945gclf/dsdt.asl              | 2 +-
 src/mainboard/intel/dcp847ske/dsdt.asl             | 2 +-
 src/mainboard/intel/dg41wv/dsdt.asl                | 2 +-
 src/mainboard/intel/dg43gt/dsdt.asl                | 2 +-
 src/mainboard/intel/emeraldlake2/dsdt.asl          | 2 +-
 src/mainboard/intel/galileo/dsdt.asl               | 2 +-
 src/mainboard/intel/glkrvp/dsdt.asl                | 2 +-
 src/mainboard/intel/harcuvar/dsdt.asl              | 2 +-
 src/mainboard/intel/icelake_rvp/dsdt.asl           | 2 +-
 src/mainboard/intel/kblrvp/dsdt.asl                | 2 +-
 src/mainboard/intel/kunimitsu/dsdt.asl             | 2 +-
 src/mainboard/intel/leafhill/dsdt.asl              | 2 +-
 src/mainboard/intel/littleplains/dsdt.asl          | 2 +-
 src/mainboard/intel/minnow3/dsdt.asl               | 2 +-
 src/mainboard/intel/minnowmax/dsdt.asl             | 2 +-
 src/mainboard/intel/mohonpeak/dsdt.asl             | 2 +-
 src/mainboard/intel/saddlebrook/dsdt.asl           | 2 +-
 src/mainboard/intel/strago/dsdt.asl                | 2 +-
 src/mainboard/intel/wtm2/dsdt.asl                  | 2 +-
 src/mainboard/kontron/986lcd-m/dsdt.asl            | 2 +-
 src/mainboard/kontron/ktqm77/dsdt.asl              | 2 +-
 src/mainboard/lenovo/l520/dsdt.asl                 | 2 +-
 src/mainboard/lenovo/s230u/dsdt.asl                | 2 +-
 src/mainboard/lenovo/t400/dsdt.asl                 | 2 +-
 src/mainboard/lenovo/t420/dsdt.asl                 | 2 +-
 src/mainboard/lenovo/t420s/dsdt.asl                | 2 +-
 src/mainboard/lenovo/t430/dsdt.asl                 | 2 +-
 src/mainboard/lenovo/t430s/dsdt.asl                | 2 +-
 src/mainboard/lenovo/t520/dsdt.asl                 | 2 +-
 src/mainboard/lenovo/t530/dsdt.asl                 | 2 +-
 src/mainboard/lenovo/t60/dsdt.asl                  | 2 +-
 src/mainboard/lenovo/x131e/dsdt.asl                | 2 +-
 src/mainboard/lenovo/x1_carbon_gen1/dsdt.asl       | 2 +-
 src/mainboard/lenovo/x200/dsdt.asl                 | 2 +-
 src/mainboard/lenovo/x201/dsdt.asl                 | 2 +-
 src/mainboard/lenovo/x220/dsdt.asl                 | 2 +-
 src/mainboard/lenovo/x230/dsdt.asl                 | 2 +-
 src/mainboard/lenovo/x60/dsdt.asl                  | 2 +-
 src/mainboard/lenovo/z61t/dsdt.asl                 | 2 +-
 src/mainboard/ocp/monolake/dsdt.asl                | 2 +-
 src/mainboard/ocp/wedge100s/dsdt.asl               | 2 +-
 src/mainboard/opencellular/rotundu/dsdt.asl        | 2 +-
 src/mainboard/packardbell/ms2290/dsdt.asl          | 2 +-
 src/mainboard/purism/librem_bdw/dsdt.asl           | 2 +-
 src/mainboard/purism/librem_skl/dsdt.asl           | 2 +-
 src/mainboard/roda/rk886ex/dsdt.asl                | 2 +-
 src/mainboard/roda/rk9/dsdt.asl                    | 2 +-
 src/mainboard/roda/rv11/dsdt.asl                   | 2 +-
 src/mainboard/samsung/lumpy/dsdt.asl               | 2 +-
 src/mainboard/samsung/stumpy/dsdt.asl              | 2 +-
 src/mainboard/sapphire/pureplatinumh61/dsdt.asl    | 2 +-
 src/mainboard/scaleway/tagada/dsdt.asl             | 2 +-
 src/mainboard/siemens/mc_apl1/dsdt.asl             | 2 +-
 src/mainboard/siemens/mc_bdx1/dsdt.asl             | 2 +-
 src/mainboard/siemens/mc_tcu3/dsdt.asl             | 2 +-
 util/autoport/main.go                              | 2 +-
 115 files changed, 115 insertions(+), 115 deletions(-)

diff --git a/src/mainboard/adi/rcc-dff/dsdt.asl b/src/mainboard/adi/rcc-dff/dsdt.asl
index ec56e2665a..eb661c26e7 100644
--- a/src/mainboard/adi/rcc-dff/dsdt.asl
+++ b/src/mainboard/adi/rcc-dff/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/aopen/dxplplusu/dsdt.asl b/src/mainboard/aopen/dxplplusu/dsdt.asl
index 0fec68c9c6..908a9f543e 100644
--- a/src/mainboard/aopen/dxplplusu/dsdt.asl
+++ b/src/mainboard/aopen/dxplplusu/dsdt.asl
@@ -18,7 +18,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x04,		// DSDT revision: ACPI v4.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20111103	// OEM revision
diff --git a/src/mainboard/apple/macbook21/dsdt.asl b/src/mainboard/apple/macbook21/dsdt.asl
index 2405c3e823..76b95ac542 100644
--- a/src/mainboard/apple/macbook21/dsdt.asl
+++ b/src/mainboard/apple/macbook21/dsdt.asl
@@ -21,7 +21,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/apple/macbookair4_2/dsdt.asl b/src/mainboard/apple/macbookair4_2/dsdt.asl
index 8e6fd28bf2..ac2d1bde1d 100644
--- a/src/mainboard/apple/macbookair4_2/dsdt.asl
+++ b/src/mainboard/apple/macbookair4_2/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/asrock/b75pro3-m/dsdt.asl b/src/mainboard/asrock/b75pro3-m/dsdt.asl
index f01afa2529..44141c32aa 100644
--- a/src/mainboard/asrock/b75pro3-m/dsdt.asl
+++ b/src/mainboard/asrock/b75pro3-m/dsdt.asl
@@ -20,7 +20,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/asrock/g41c-gs/dsdt.asl b/src/mainboard/asrock/g41c-gs/dsdt.asl
index e11eb39542..8c99025d30 100644
--- a/src/mainboard/asrock/g41c-gs/dsdt.asl
+++ b/src/mainboard/asrock/g41c-gs/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/asrock/h81m-hds/dsdt.asl b/src/mainboard/asrock/h81m-hds/dsdt.asl
index 7ef92532d3..c02e48659e 100644
--- a/src/mainboard/asrock/h81m-hds/dsdt.asl
+++ b/src/mainboard/asrock/h81m-hds/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		/* DSDT Revision: ACPI v3.0 */
+	0x02,		/* DSDT Revision: ACPI v3.0 */
 	"COREv4",	/* OEM ID */
 	"COREBOOT",	/* OEM Table ID */
 	0x20181031	/* OEM Revision */
diff --git a/src/mainboard/asus/kcma-d8/dsdt.asl b/src/mainboard/asus/kcma-d8/dsdt.asl
index d05c6d7064..589ed32f3f 100644
--- a/src/mainboard/asus/kcma-d8/dsdt.asl
+++ b/src/mainboard/asus/kcma-d8/dsdt.asl
@@ -33,7 +33,7 @@
 DefinitionBlock (
 		"DSDT.AML",	/* Output filename */
 		"DSDT",		/* Signature */
-		0x03,		/* DSDT Revision, needs to be 2 or higher for 64bit */
+		0x02,		/* DSDT Revision, needs to be 2 or higher for 64bit */
 		"ASUS  ",	/* OEMID */
 		"COREBOOT",	/* TABLE ID */
 		0x00000001	/* OEM Revision */
diff --git a/src/mainboard/asus/kgpe-d16/dsdt.asl b/src/mainboard/asus/kgpe-d16/dsdt.asl
index 099aca5f6d..31398eb2a0 100644
--- a/src/mainboard/asus/kgpe-d16/dsdt.asl
+++ b/src/mainboard/asus/kgpe-d16/dsdt.asl
@@ -33,7 +33,7 @@
 DefinitionBlock (
 		"DSDT.AML",	/* Output filename */
 		"DSDT",		/* Signature */
-		0x03,		/* DSDT Revision, needs to be 2 or higher for 64bit */
+		0x02,		/* DSDT Revision, needs to be 2 or higher for 64bit */
 		"ASUS  ",	/* OEMID */
 		"COREBOOT",	/* TABLE ID */
 		0x00000001	/* OEM Revision */
diff --git a/src/mainboard/asus/maximus_iv_gene-z/dsdt.asl b/src/mainboard/asus/maximus_iv_gene-z/dsdt.asl
index 60cbde3f4e..1758e8e01e 100644
--- a/src/mainboard/asus/maximus_iv_gene-z/dsdt.asl
+++ b/src/mainboard/asus/maximus_iv_gene-z/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		/* DSDT Revision: ACPI v3.0 */
+	0x02,		/* DSDT Revision: ACPI v2.0 and up */
 	"COREv4",	/* OEM ID */
 	"COREBOOT",	/* OEM Table ID */
 	0x20171231	/* OEM Revision */
diff --git a/src/mainboard/asus/p5gc-mx/dsdt.asl b/src/mainboard/asus/p5gc-mx/dsdt.asl
index 5eb55ea651..61f0cea72d 100644
--- a/src/mainboard/asus/p5gc-mx/dsdt.asl
+++ b/src/mainboard/asus/p5gc-mx/dsdt.asl
@@ -16,7 +16,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/asus/p5qc/dsdt.asl b/src/mainboard/asus/p5qc/dsdt.asl
index 4888b9ce13..93992080f1 100644
--- a/src/mainboard/asus/p5qc/dsdt.asl
+++ b/src/mainboard/asus/p5qc/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x00000001	// OEM revision
diff --git a/src/mainboard/asus/p8h61-m_lx/dsdt.asl b/src/mainboard/asus/p8h61-m_lx/dsdt.asl
index 60cbde3f4e..1758e8e01e 100644
--- a/src/mainboard/asus/p8h61-m_lx/dsdt.asl
+++ b/src/mainboard/asus/p8h61-m_lx/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		/* DSDT Revision: ACPI v3.0 */
+	0x02,		/* DSDT Revision: ACPI v2.0 and up */
 	"COREv4",	/* OEM ID */
 	"COREBOOT",	/* OEM Table ID */
 	0x20171231	/* OEM Revision */
diff --git a/src/mainboard/asus/p8h61-m_pro/dsdt.asl b/src/mainboard/asus/p8h61-m_pro/dsdt.asl
index d007c2fbff..ab7409ca3b 100644
--- a/src/mainboard/asus/p8h61-m_pro/dsdt.asl
+++ b/src/mainboard/asus/p8h61-m_pro/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/compulab/intense_pc/dsdt.asl b/src/mainboard/compulab/intense_pc/dsdt.asl
index a3fa256c18..85b3e099df 100644
--- a/src/mainboard/compulab/intense_pc/dsdt.asl
+++ b/src/mainboard/compulab/intense_pc/dsdt.asl
@@ -20,7 +20,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/esd/atom15/dsdt.asl b/src/mainboard/esd/atom15/dsdt.asl
index 63b9d03dbb..9fad9192e9 100644
--- a/src/mainboard/esd/atom15/dsdt.asl
+++ b/src/mainboard/esd/atom15/dsdt.asl
@@ -25,7 +25,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/facebook/watson/dsdt.asl b/src/mainboard/facebook/watson/dsdt.asl
index 8861f32c76..88dff41f86 100644
--- a/src/mainboard/facebook/watson/dsdt.asl
+++ b/src/mainboard/facebook/watson/dsdt.asl
@@ -18,7 +18,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/foxconn/d41s/dsdt.asl b/src/mainboard/foxconn/d41s/dsdt.asl
index 621b87dc7a..c89eb75538 100644
--- a/src/mainboard/foxconn/d41s/dsdt.asl
+++ b/src/mainboard/foxconn/d41s/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/foxconn/g41s-k/dsdt.asl b/src/mainboard/foxconn/g41s-k/dsdt.asl
index e11eb39542..8c99025d30 100644
--- a/src/mainboard/foxconn/g41s-k/dsdt.asl
+++ b/src/mainboard/foxconn/g41s-k/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/getac/p470/dsdt.asl b/src/mainboard/getac/p470/dsdt.asl
index 4b3ae14b19..33eb3cccbc 100644
--- a/src/mainboard/getac/p470/dsdt.asl
+++ b/src/mainboard/getac/p470/dsdt.asl
@@ -20,7 +20,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/gigabyte/ga-945gcm-s2l/dsdt.asl b/src/mainboard/gigabyte/ga-945gcm-s2l/dsdt.asl
index cbc1573a2e..79f953d9b2 100644
--- a/src/mainboard/gigabyte/ga-945gcm-s2l/dsdt.asl
+++ b/src/mainboard/gigabyte/ga-945gcm-s2l/dsdt.asl
@@ -16,7 +16,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/gigabyte/ga-b75m-d3h/dsdt.asl b/src/mainboard/gigabyte/ga-b75m-d3h/dsdt.asl
index 665d81ba7a..8020bdea6d 100644
--- a/src/mainboard/gigabyte/ga-b75m-d3h/dsdt.asl
+++ b/src/mainboard/gigabyte/ga-b75m-d3h/dsdt.asl
@@ -14,7 +14,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/gigabyte/ga-b75m-d3v/dsdt.asl b/src/mainboard/gigabyte/ga-b75m-d3v/dsdt.asl
index 665d81ba7a..8020bdea6d 100644
--- a/src/mainboard/gigabyte/ga-b75m-d3v/dsdt.asl
+++ b/src/mainboard/gigabyte/ga-b75m-d3v/dsdt.asl
@@ -14,7 +14,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/gigabyte/ga-g41m-es2l/dsdt.asl b/src/mainboard/gigabyte/ga-g41m-es2l/dsdt.asl
index e11eb39542..8c99025d30 100644
--- a/src/mainboard/gigabyte/ga-g41m-es2l/dsdt.asl
+++ b/src/mainboard/gigabyte/ga-g41m-es2l/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/gigabyte/ga-h61m-s2pv/dsdt.asl b/src/mainboard/gigabyte/ga-h61m-s2pv/dsdt.asl
index 71d238db44..3d14968080 100644
--- a/src/mainboard/gigabyte/ga-h61m-s2pv/dsdt.asl
+++ b/src/mainboard/gigabyte/ga-h61m-s2pv/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/google/auron/dsdt.asl b/src/mainboard/google/auron/dsdt.asl
index 445d927d5f..8c9a020d02 100644
--- a/src/mainboard/google/auron/dsdt.asl
+++ b/src/mainboard/google/auron/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/google/beltino/dsdt.asl b/src/mainboard/google/beltino/dsdt.asl
index 268cd9dc9e..e356ee47b3 100644
--- a/src/mainboard/google/beltino/dsdt.asl
+++ b/src/mainboard/google/beltino/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/google/butterfly/dsdt.asl b/src/mainboard/google/butterfly/dsdt.asl
index b4fd6cff2d..08aeda9cdf 100644
--- a/src/mainboard/google/butterfly/dsdt.asl
+++ b/src/mainboard/google/butterfly/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/google/cyan/dsdt.asl b/src/mainboard/google/cyan/dsdt.asl
index a49b1a91a0..3e0f888a59 100644
--- a/src/mainboard/google/cyan/dsdt.asl
+++ b/src/mainboard/google/cyan/dsdt.asl
@@ -18,7 +18,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		/* DSDT revision: ACPI v5.0 */
+	0x02,		/* DSDT revision: ACPI v2.0 and up */
 	"COREv4",	/* OEM id */
 	"COREBOOT",	/* OEM table id */
 	0x20110725	/* OEM revision */
diff --git a/src/mainboard/google/eve/dsdt.asl b/src/mainboard/google/eve/dsdt.asl
index 9382e356ed..13873d5859 100644
--- a/src/mainboard/google/eve/dsdt.asl
+++ b/src/mainboard/google/eve/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/google/fizz/dsdt.asl b/src/mainboard/google/fizz/dsdt.asl
index 8a35197608..367b0f86e2 100644
--- a/src/mainboard/google/fizz/dsdt.asl
+++ b/src/mainboard/google/fizz/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/google/glados/dsdt.asl b/src/mainboard/google/glados/dsdt.asl
index b5a37c68cc..0b4f9dd441 100644
--- a/src/mainboard/google/glados/dsdt.asl
+++ b/src/mainboard/google/glados/dsdt.asl
@@ -18,7 +18,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/google/jecht/dsdt.asl b/src/mainboard/google/jecht/dsdt.asl
index 8157a84d36..1108f29b24 100644
--- a/src/mainboard/google/jecht/dsdt.asl
+++ b/src/mainboard/google/jecht/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/google/link/dsdt.asl b/src/mainboard/google/link/dsdt.asl
index 5af07938c5..7056c2b289 100644
--- a/src/mainboard/google/link/dsdt.asl
+++ b/src/mainboard/google/link/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/google/octopus/dsdt.asl b/src/mainboard/google/octopus/dsdt.asl
index 63b93e6501..aadcd43d95 100644
--- a/src/mainboard/google/octopus/dsdt.asl
+++ b/src/mainboard/google/octopus/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/google/parrot/dsdt.asl b/src/mainboard/google/parrot/dsdt.asl
index ebc86cacfc..7b9847ef36 100644
--- a/src/mainboard/google/parrot/dsdt.asl
+++ b/src/mainboard/google/parrot/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/google/poppy/dsdt.asl b/src/mainboard/google/poppy/dsdt.asl
index 5b776c9ac3..3d00524bc1 100644
--- a/src/mainboard/google/poppy/dsdt.asl
+++ b/src/mainboard/google/poppy/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/google/rambi/dsdt.asl b/src/mainboard/google/rambi/dsdt.asl
index a37756ff59..dfc7ce87f6 100644
--- a/src/mainboard/google/rambi/dsdt.asl
+++ b/src/mainboard/google/rambi/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/google/reef/dsdt.asl b/src/mainboard/google/reef/dsdt.asl
index dc63436555..f97476bded 100644
--- a/src/mainboard/google/reef/dsdt.asl
+++ b/src/mainboard/google/reef/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/google/sarien/dsdt.asl b/src/mainboard/google/sarien/dsdt.asl
index 18fedd5bc9..34484c04a4 100644
--- a/src/mainboard/google/sarien/dsdt.asl
+++ b/src/mainboard/google/sarien/dsdt.asl
@@ -18,7 +18,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		/* DSDT revision: ACPI v5.0 */
+	0x02,		/* DSDT revision: ACPI v2.0 and up */
 	"COREv4",	/* OEM id */
 	"COREBOOT",	/* OEM table id */
 	0x20110725	/* OEM revision */
diff --git a/src/mainboard/google/slippy/dsdt.asl b/src/mainboard/google/slippy/dsdt.asl
index 076039d888..6f5f20714e 100644
--- a/src/mainboard/google/slippy/dsdt.asl
+++ b/src/mainboard/google/slippy/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/google/stout/dsdt.asl b/src/mainboard/google/stout/dsdt.asl
index 60ea646cb6..023b920244 100644
--- a/src/mainboard/google/stout/dsdt.asl
+++ b/src/mainboard/google/stout/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,       // DSDT revision: ACPI v2.0
+	0x02,       // DSDT revision: ACPI v2.0 and up
 	"COREv4",   // OEM id
 	"COREBOOT", // OEM table id
 	0x20110725  // OEM revision
diff --git a/src/mainboard/google/zoombini/dsdt.asl b/src/mainboard/google/zoombini/dsdt.asl
index 31409906d0..4715196e3e 100644
--- a/src/mainboard/google/zoombini/dsdt.asl
+++ b/src/mainboard/google/zoombini/dsdt.asl
@@ -21,7 +21,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/hp/2570p/dsdt.asl b/src/mainboard/hp/2570p/dsdt.asl
index 51934c73bc..987238d3c6 100644
--- a/src/mainboard/hp/2570p/dsdt.asl
+++ b/src/mainboard/hp/2570p/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/hp/2760p/dsdt.asl b/src/mainboard/hp/2760p/dsdt.asl
index 51934c73bc..987238d3c6 100644
--- a/src/mainboard/hp/2760p/dsdt.asl
+++ b/src/mainboard/hp/2760p/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/hp/8460p/dsdt.asl b/src/mainboard/hp/8460p/dsdt.asl
index 51934c73bc..987238d3c6 100644
--- a/src/mainboard/hp/8460p/dsdt.asl
+++ b/src/mainboard/hp/8460p/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/hp/8470p/dsdt.asl b/src/mainboard/hp/8470p/dsdt.asl
index 51934c73bc..987238d3c6 100644
--- a/src/mainboard/hp/8470p/dsdt.asl
+++ b/src/mainboard/hp/8470p/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/hp/8770w/dsdt.asl b/src/mainboard/hp/8770w/dsdt.asl
index 51934c73bc..987238d3c6 100644
--- a/src/mainboard/hp/8770w/dsdt.asl
+++ b/src/mainboard/hp/8770w/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/hp/compaq_8200_elite_sff/dsdt.asl b/src/mainboard/hp/compaq_8200_elite_sff/dsdt.asl
index 555028cbf4..2341fd9e1a 100644
--- a/src/mainboard/hp/compaq_8200_elite_sff/dsdt.asl
+++ b/src/mainboard/hp/compaq_8200_elite_sff/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/hp/folio_9470m/dsdt.asl b/src/mainboard/hp/folio_9470m/dsdt.asl
index 51934c73bc..987238d3c6 100644
--- a/src/mainboard/hp/folio_9470m/dsdt.asl
+++ b/src/mainboard/hp/folio_9470m/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/hp/revolve_810_g1/dsdt.asl b/src/mainboard/hp/revolve_810_g1/dsdt.asl
index 51934c73bc..987238d3c6 100644
--- a/src/mainboard/hp/revolve_810_g1/dsdt.asl
+++ b/src/mainboard/hp/revolve_810_g1/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/ibase/mb899/dsdt.asl b/src/mainboard/ibase/mb899/dsdt.asl
index 6844bbd4bb..e26cfa0d0b 100644
--- a/src/mainboard/ibase/mb899/dsdt.asl
+++ b/src/mainboard/ibase/mb899/dsdt.asl
@@ -16,7 +16,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv2",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/intel/apollolake_rvp/dsdt.asl b/src/mainboard/intel/apollolake_rvp/dsdt.asl
index 53a7b0f0d4..260cfe3f15 100644
--- a/src/mainboard/intel/apollolake_rvp/dsdt.asl
+++ b/src/mainboard/intel/apollolake_rvp/dsdt.asl
@@ -18,7 +18,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		/* DSDT revision: ACPI v2.0 */
+	0x02,		/* DSDT revision: ACPI v2.0 and up */
 	"COREv4",	/* OEM id */
 	"COREBOOT",	/* OEM table id */
 	0x20110725	/* OEM revision */
diff --git a/src/mainboard/intel/baskingridge/dsdt.asl b/src/mainboard/intel/baskingridge/dsdt.asl
index 1871c3a1af..88c32801da 100644
--- a/src/mainboard/intel/baskingridge/dsdt.asl
+++ b/src/mainboard/intel/baskingridge/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/intel/bayleybay_fsp/dsdt.asl b/src/mainboard/intel/bayleybay_fsp/dsdt.asl
index 63b9d03dbb..9fad9192e9 100644
--- a/src/mainboard/intel/bayleybay_fsp/dsdt.asl
+++ b/src/mainboard/intel/bayleybay_fsp/dsdt.asl
@@ -25,7 +25,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/intel/camelbackmountain_fsp/dsdt.asl b/src/mainboard/intel/camelbackmountain_fsp/dsdt.asl
index 9db2693a63..71b635381a 100644
--- a/src/mainboard/intel/camelbackmountain_fsp/dsdt.asl
+++ b/src/mainboard/intel/camelbackmountain_fsp/dsdt.asl
@@ -18,7 +18,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/intel/cannonlake_rvp/dsdt.asl b/src/mainboard/intel/cannonlake_rvp/dsdt.asl
index 5c4b31c2e9..fb3b6977a8 100644
--- a/src/mainboard/intel/cannonlake_rvp/dsdt.asl
+++ b/src/mainboard/intel/cannonlake_rvp/dsdt.asl
@@ -18,7 +18,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/intel/coffeelake_rvp/dsdt.asl b/src/mainboard/intel/coffeelake_rvp/dsdt.asl
index 37a1725c1e..7f2c6d6f4e 100644
--- a/src/mainboard/intel/coffeelake_rvp/dsdt.asl
+++ b/src/mainboard/intel/coffeelake_rvp/dsdt.asl
@@ -18,7 +18,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/intel/d510mo/dsdt.asl b/src/mainboard/intel/d510mo/dsdt.asl
index 621b87dc7a..c89eb75538 100644
--- a/src/mainboard/intel/d510mo/dsdt.asl
+++ b/src/mainboard/intel/d510mo/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/intel/d945gclf/dsdt.asl b/src/mainboard/intel/d945gclf/dsdt.asl
index cbc1573a2e..79f953d9b2 100644
--- a/src/mainboard/intel/d945gclf/dsdt.asl
+++ b/src/mainboard/intel/d945gclf/dsdt.asl
@@ -16,7 +16,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/intel/dcp847ske/dsdt.asl b/src/mainboard/intel/dcp847ske/dsdt.asl
index 71b4d89b9f..d5ec1477a5 100644
--- a/src/mainboard/intel/dcp847ske/dsdt.asl
+++ b/src/mainboard/intel/dcp847ske/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/intel/dg41wv/dsdt.asl b/src/mainboard/intel/dg41wv/dsdt.asl
index e11eb39542..8c99025d30 100644
--- a/src/mainboard/intel/dg41wv/dsdt.asl
+++ b/src/mainboard/intel/dg41wv/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/intel/dg43gt/dsdt.asl b/src/mainboard/intel/dg43gt/dsdt.asl
index 3315c972c2..262cb23c38 100644
--- a/src/mainboard/intel/dg43gt/dsdt.asl
+++ b/src/mainboard/intel/dg43gt/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/intel/emeraldlake2/dsdt.asl b/src/mainboard/intel/emeraldlake2/dsdt.asl
index 26c41c4b95..4e78491f61 100644
--- a/src/mainboard/intel/emeraldlake2/dsdt.asl
+++ b/src/mainboard/intel/emeraldlake2/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/intel/galileo/dsdt.asl b/src/mainboard/intel/galileo/dsdt.asl
index 881c1b962a..da7ac14492 100644
--- a/src/mainboard/intel/galileo/dsdt.asl
+++ b/src/mainboard/intel/galileo/dsdt.asl
@@ -18,7 +18,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"Intel",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20160220	// OEM revision
diff --git a/src/mainboard/intel/glkrvp/dsdt.asl b/src/mainboard/intel/glkrvp/dsdt.asl
index 3a80f6c65a..8e9722bdf3 100644
--- a/src/mainboard/intel/glkrvp/dsdt.asl
+++ b/src/mainboard/intel/glkrvp/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/intel/harcuvar/dsdt.asl b/src/mainboard/intel/harcuvar/dsdt.asl
index 4e66d179bb..5edbb6cce8 100644
--- a/src/mainboard/intel/harcuvar/dsdt.asl
+++ b/src/mainboard/intel/harcuvar/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/intel/icelake_rvp/dsdt.asl b/src/mainboard/intel/icelake_rvp/dsdt.asl
index 7951501d8c..eb5c5abdd6 100644
--- a/src/mainboard/intel/icelake_rvp/dsdt.asl
+++ b/src/mainboard/intel/icelake_rvp/dsdt.asl
@@ -16,7 +16,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/intel/kblrvp/dsdt.asl b/src/mainboard/intel/kblrvp/dsdt.asl
index 953121985b..903198dbfa 100644
--- a/src/mainboard/intel/kblrvp/dsdt.asl
+++ b/src/mainboard/intel/kblrvp/dsdt.asl
@@ -18,7 +18,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/intel/kunimitsu/dsdt.asl b/src/mainboard/intel/kunimitsu/dsdt.asl
index b5a37c68cc..0b4f9dd441 100644
--- a/src/mainboard/intel/kunimitsu/dsdt.asl
+++ b/src/mainboard/intel/kunimitsu/dsdt.asl
@@ -18,7 +18,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/intel/leafhill/dsdt.asl b/src/mainboard/intel/leafhill/dsdt.asl
index 004523a0ff..d16a289bd7 100644
--- a/src/mainboard/intel/leafhill/dsdt.asl
+++ b/src/mainboard/intel/leafhill/dsdt.asl
@@ -16,7 +16,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/intel/littleplains/dsdt.asl b/src/mainboard/intel/littleplains/dsdt.asl
index ec56e2665a..eb661c26e7 100644
--- a/src/mainboard/intel/littleplains/dsdt.asl
+++ b/src/mainboard/intel/littleplains/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/intel/minnow3/dsdt.asl b/src/mainboard/intel/minnow3/dsdt.asl
index 004523a0ff..d16a289bd7 100644
--- a/src/mainboard/intel/minnow3/dsdt.asl
+++ b/src/mainboard/intel/minnow3/dsdt.asl
@@ -16,7 +16,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/intel/minnowmax/dsdt.asl b/src/mainboard/intel/minnowmax/dsdt.asl
index 63b9d03dbb..9fad9192e9 100644
--- a/src/mainboard/intel/minnowmax/dsdt.asl
+++ b/src/mainboard/intel/minnowmax/dsdt.asl
@@ -25,7 +25,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/intel/mohonpeak/dsdt.asl b/src/mainboard/intel/mohonpeak/dsdt.asl
index ec56e2665a..eb661c26e7 100644
--- a/src/mainboard/intel/mohonpeak/dsdt.asl
+++ b/src/mainboard/intel/mohonpeak/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/intel/saddlebrook/dsdt.asl b/src/mainboard/intel/saddlebrook/dsdt.asl
index 45d9a85c28..59ebc17c7a 100644
--- a/src/mainboard/intel/saddlebrook/dsdt.asl
+++ b/src/mainboard/intel/saddlebrook/dsdt.asl
@@ -18,7 +18,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/intel/strago/dsdt.asl b/src/mainboard/intel/strago/dsdt.asl
index 29ea7d6336..7f78e7b542 100644
--- a/src/mainboard/intel/strago/dsdt.asl
+++ b/src/mainboard/intel/strago/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		/* DSDT revision: ACPI v5.0 */
+	0x02,		/* DSDT revision: ACPI v2.0 and up */
 	"COREv4",	/* OEM id */
 	"COREBOOT",	/* OEM table id */
 	0x20110725	/* OEM revision */
diff --git a/src/mainboard/intel/wtm2/dsdt.asl b/src/mainboard/intel/wtm2/dsdt.asl
index 410f6d20aa..fac7b0e928 100644
--- a/src/mainboard/intel/wtm2/dsdt.asl
+++ b/src/mainboard/intel/wtm2/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/kontron/986lcd-m/dsdt.asl b/src/mainboard/kontron/986lcd-m/dsdt.asl
index 35264bd952..0ddedd5f59 100644
--- a/src/mainboard/kontron/986lcd-m/dsdt.asl
+++ b/src/mainboard/kontron/986lcd-m/dsdt.asl
@@ -16,7 +16,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/kontron/ktqm77/dsdt.asl b/src/mainboard/kontron/ktqm77/dsdt.asl
index 0432f778d4..794f8d52ab 100644
--- a/src/mainboard/kontron/ktqm77/dsdt.asl
+++ b/src/mainboard/kontron/ktqm77/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/lenovo/l520/dsdt.asl b/src/mainboard/lenovo/l520/dsdt.asl
index 42a61fb781..7648d0591a 100644
--- a/src/mainboard/lenovo/l520/dsdt.asl
+++ b/src/mainboard/lenovo/l520/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/lenovo/s230u/dsdt.asl b/src/mainboard/lenovo/s230u/dsdt.asl
index 71f3ef710b..305a6c3d33 100644
--- a/src/mainboard/lenovo/s230u/dsdt.asl
+++ b/src/mainboard/lenovo/s230u/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/lenovo/t400/dsdt.asl b/src/mainboard/lenovo/t400/dsdt.asl
index c9f4c084c4..c403a090f2 100644
--- a/src/mainboard/lenovo/t400/dsdt.asl
+++ b/src/mainboard/lenovo/t400/dsdt.asl
@@ -22,7 +22,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/lenovo/t420/dsdt.asl b/src/mainboard/lenovo/t420/dsdt.asl
index 7db834415f..d554ed9f13 100644
--- a/src/mainboard/lenovo/t420/dsdt.asl
+++ b/src/mainboard/lenovo/t420/dsdt.asl
@@ -24,7 +24,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/lenovo/t420s/dsdt.asl b/src/mainboard/lenovo/t420s/dsdt.asl
index 7db834415f..d554ed9f13 100644
--- a/src/mainboard/lenovo/t420s/dsdt.asl
+++ b/src/mainboard/lenovo/t420s/dsdt.asl
@@ -24,7 +24,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/lenovo/t430/dsdt.asl b/src/mainboard/lenovo/t430/dsdt.asl
index dff8dcd79b..6161393dac 100644
--- a/src/mainboard/lenovo/t430/dsdt.asl
+++ b/src/mainboard/lenovo/t430/dsdt.asl
@@ -18,7 +18,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/lenovo/t430s/dsdt.asl b/src/mainboard/lenovo/t430s/dsdt.asl
index 7db834415f..d554ed9f13 100644
--- a/src/mainboard/lenovo/t430s/dsdt.asl
+++ b/src/mainboard/lenovo/t430s/dsdt.asl
@@ -24,7 +24,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/lenovo/t520/dsdt.asl b/src/mainboard/lenovo/t520/dsdt.asl
index 7db834415f..d554ed9f13 100644
--- a/src/mainboard/lenovo/t520/dsdt.asl
+++ b/src/mainboard/lenovo/t520/dsdt.asl
@@ -24,7 +24,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/lenovo/t530/dsdt.asl b/src/mainboard/lenovo/t530/dsdt.asl
index 7db834415f..d554ed9f13 100644
--- a/src/mainboard/lenovo/t530/dsdt.asl
+++ b/src/mainboard/lenovo/t530/dsdt.asl
@@ -24,7 +24,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/lenovo/t60/dsdt.asl b/src/mainboard/lenovo/t60/dsdt.asl
index a13ac3c8e4..ef69baa71b 100644
--- a/src/mainboard/lenovo/t60/dsdt.asl
+++ b/src/mainboard/lenovo/t60/dsdt.asl
@@ -22,7 +22,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/lenovo/x131e/dsdt.asl b/src/mainboard/lenovo/x131e/dsdt.asl
index cd1af34386..8c907e7b6f 100644
--- a/src/mainboard/lenovo/x131e/dsdt.asl
+++ b/src/mainboard/lenovo/x131e/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/lenovo/x1_carbon_gen1/dsdt.asl b/src/mainboard/lenovo/x1_carbon_gen1/dsdt.asl
index bb576f50ad..4901fdad5a 100644
--- a/src/mainboard/lenovo/x1_carbon_gen1/dsdt.asl
+++ b/src/mainboard/lenovo/x1_carbon_gen1/dsdt.asl
@@ -24,7 +24,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/lenovo/x200/dsdt.asl b/src/mainboard/lenovo/x200/dsdt.asl
index 42fcab3a85..9bf858de24 100644
--- a/src/mainboard/lenovo/x200/dsdt.asl
+++ b/src/mainboard/lenovo/x200/dsdt.asl
@@ -22,7 +22,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/lenovo/x201/dsdt.asl b/src/mainboard/lenovo/x201/dsdt.asl
index b59c215c53..643c803e49 100644
--- a/src/mainboard/lenovo/x201/dsdt.asl
+++ b/src/mainboard/lenovo/x201/dsdt.asl
@@ -23,7 +23,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		/* DSDT revision: ACPI v3.0 */
+	0x02,		/* DSDT revision: ACPI v2.0 and up */
 	"COREv4",	/* OEM id */
 	"COREBOOT",     /* OEM table id */
 	0x20130325	/* OEM revision */
diff --git a/src/mainboard/lenovo/x220/dsdt.asl b/src/mainboard/lenovo/x220/dsdt.asl
index 7db834415f..d554ed9f13 100644
--- a/src/mainboard/lenovo/x220/dsdt.asl
+++ b/src/mainboard/lenovo/x220/dsdt.asl
@@ -24,7 +24,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/lenovo/x230/dsdt.asl b/src/mainboard/lenovo/x230/dsdt.asl
index 7db834415f..d554ed9f13 100644
--- a/src/mainboard/lenovo/x230/dsdt.asl
+++ b/src/mainboard/lenovo/x230/dsdt.asl
@@ -24,7 +24,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/lenovo/x60/dsdt.asl b/src/mainboard/lenovo/x60/dsdt.asl
index d4f4668da1..601fb073a5 100644
--- a/src/mainboard/lenovo/x60/dsdt.asl
+++ b/src/mainboard/lenovo/x60/dsdt.asl
@@ -22,7 +22,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/lenovo/z61t/dsdt.asl b/src/mainboard/lenovo/z61t/dsdt.asl
index a13ac3c8e4..ef69baa71b 100644
--- a/src/mainboard/lenovo/z61t/dsdt.asl
+++ b/src/mainboard/lenovo/z61t/dsdt.asl
@@ -22,7 +22,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/ocp/monolake/dsdt.asl b/src/mainboard/ocp/monolake/dsdt.asl
index 9db2693a63..71b635381a 100644
--- a/src/mainboard/ocp/monolake/dsdt.asl
+++ b/src/mainboard/ocp/monolake/dsdt.asl
@@ -18,7 +18,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/ocp/wedge100s/dsdt.asl b/src/mainboard/ocp/wedge100s/dsdt.asl
index 9db2693a63..71b635381a 100644
--- a/src/mainboard/ocp/wedge100s/dsdt.asl
+++ b/src/mainboard/ocp/wedge100s/dsdt.asl
@@ -18,7 +18,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/opencellular/rotundu/dsdt.asl b/src/mainboard/opencellular/rotundu/dsdt.asl
index 63b9d03dbb..9fad9192e9 100644
--- a/src/mainboard/opencellular/rotundu/dsdt.asl
+++ b/src/mainboard/opencellular/rotundu/dsdt.asl
@@ -25,7 +25,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/packardbell/ms2290/dsdt.asl b/src/mainboard/packardbell/ms2290/dsdt.asl
index 338ecca1e0..69778e2445 100644
--- a/src/mainboard/packardbell/ms2290/dsdt.asl
+++ b/src/mainboard/packardbell/ms2290/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		/* DSDT revision: ACPI v3.0 */
+	0x02,		/* DSDT revision: ACPI v2.0 and up */
 	"COREv4",	/* OEM id */
 	"COREBOOT",	/* OEM table id */
 	0x20140108	/* OEM revision */
diff --git a/src/mainboard/purism/librem_bdw/dsdt.asl b/src/mainboard/purism/librem_bdw/dsdt.asl
index 955857aaa4..eba4de4a3c 100644
--- a/src/mainboard/purism/librem_bdw/dsdt.asl
+++ b/src/mainboard/purism/librem_bdw/dsdt.asl
@@ -16,7 +16,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		/* DSDT revision: ACPI v5.0 */
+	0x02,		/* DSDT revision: ACPI v2.0 and up */
 	"COREv4",	/* OEM id */
 	"COREBOOT",	/* OEM table id */
 	0x20160115	/* OEM revision */
diff --git a/src/mainboard/purism/librem_skl/dsdt.asl b/src/mainboard/purism/librem_skl/dsdt.asl
index b1f6a54124..1284be5170 100644
--- a/src/mainboard/purism/librem_skl/dsdt.asl
+++ b/src/mainboard/purism/librem_skl/dsdt.asl
@@ -18,7 +18,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/roda/rk886ex/dsdt.asl b/src/mainboard/roda/rk886ex/dsdt.asl
index efb2f92a5e..0e9bf07689 100644
--- a/src/mainboard/roda/rk886ex/dsdt.asl
+++ b/src/mainboard/roda/rk886ex/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/roda/rk9/dsdt.asl b/src/mainboard/roda/rk9/dsdt.asl
index dee3cf4f0a..02e63d8b2c 100644
--- a/src/mainboard/roda/rk9/dsdt.asl
+++ b/src/mainboard/roda/rk9/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20090419	// OEM revision
diff --git a/src/mainboard/roda/rv11/dsdt.asl b/src/mainboard/roda/rv11/dsdt.asl
index ff837959f2..7a106a9fbc 100644
--- a/src/mainboard/roda/rv11/dsdt.asl
+++ b/src/mainboard/roda/rv11/dsdt.asl
@@ -16,7 +16,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/samsung/lumpy/dsdt.asl b/src/mainboard/samsung/lumpy/dsdt.asl
index 3ca8bf2cc1..3b5e0492c1 100644
--- a/src/mainboard/samsung/lumpy/dsdt.asl
+++ b/src/mainboard/samsung/lumpy/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/samsung/stumpy/dsdt.asl b/src/mainboard/samsung/stumpy/dsdt.asl
index c1ea0e6717..916e71886f 100644
--- a/src/mainboard/samsung/stumpy/dsdt.asl
+++ b/src/mainboard/samsung/stumpy/dsdt.asl
@@ -17,7 +17,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/sapphire/pureplatinumh61/dsdt.asl b/src/mainboard/sapphire/pureplatinumh61/dsdt.asl
index 6247fe38a3..963590814a 100644
--- a/src/mainboard/sapphire/pureplatinumh61/dsdt.asl
+++ b/src/mainboard/sapphire/pureplatinumh61/dsdt.asl
@@ -20,7 +20,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
diff --git a/src/mainboard/scaleway/tagada/dsdt.asl b/src/mainboard/scaleway/tagada/dsdt.asl
index 4e66d179bb..5edbb6cce8 100644
--- a/src/mainboard/scaleway/tagada/dsdt.asl
+++ b/src/mainboard/scaleway/tagada/dsdt.asl
@@ -19,7 +19,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/siemens/mc_apl1/dsdt.asl b/src/mainboard/siemens/mc_apl1/dsdt.asl
index e7f1ade0dc..b26d135ac4 100644
--- a/src/mainboard/siemens/mc_apl1/dsdt.asl
+++ b/src/mainboard/siemens/mc_apl1/dsdt.asl
@@ -16,7 +16,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x05,		// DSDT revision: ACPI v5.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/siemens/mc_bdx1/dsdt.asl b/src/mainboard/siemens/mc_bdx1/dsdt.asl
index 9db2693a63..71b635381a 100644
--- a/src/mainboard/siemens/mc_bdx1/dsdt.asl
+++ b/src/mainboard/siemens/mc_bdx1/dsdt.asl
@@ -18,7 +18,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/src/mainboard/siemens/mc_tcu3/dsdt.asl b/src/mainboard/siemens/mc_tcu3/dsdt.asl
index 63b9d03dbb..9fad9192e9 100644
--- a/src/mainboard/siemens/mc_tcu3/dsdt.asl
+++ b/src/mainboard/siemens/mc_tcu3/dsdt.asl
@@ -25,7 +25,7 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x02,		// DSDT revision: ACPI v2.0
+	0x02,		// DSDT revision: ACPI v2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20110725	// OEM revision
diff --git a/util/autoport/main.go b/util/autoport/main.go
index ed56a55982..0892b5ebbf 100644
--- a/util/autoport/main.go
+++ b/util/autoport/main.go
@@ -851,7 +851,7 @@ func main() {
 		`DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x03,		// DSDT revision: ACPI v3.0
+	0x02,		// DSDT revision: ACPI 2.0 and up
 	"COREv4",	// OEM id
 	"COREBOOT",	// OEM table id
 	0x20141018	// OEM revision
-- 
cgit v1.2.3