diff --git a/arch/x86/cpu/tangier/acpi.c b/arch/x86/cpu/tangier/acpi.c
index 3d117878615..8ea764f7cc1 100644
--- a/arch/x86/cpu/tangier/acpi.c
+++ b/arch/x86/cpu/tangier/acpi.c
@@ -28,8 +28,6 @@ void acpi_fill_fadt(struct acpi_fadt *fadt)
 		ACPI_FADT_POWER_BUTTON | ACPI_FADT_SLEEP_BUTTON |
 		ACPI_FADT_SEALED_CASE | ACPI_FADT_HEADLESS |
 		ACPI_FADT_HW_REDUCED_ACPI;
-	fadt->header.revision = 6;
-	fadt->minor_revision = 2;
 }
 
 void *acpi_fill_madt(struct acpi_madt *madt, struct acpi_ctx *ctx)
diff --git a/include/acpi/acpi_table.h b/include/acpi/acpi_table.h
index 7d994a985fb..48f8ce248fd 100644
--- a/include/acpi/acpi_table.h
+++ b/include/acpi/acpi_table.h
@@ -290,7 +290,8 @@ struct __packed acpi_fadt {
 #define ACPI_MADT_REV_ACPI_3_0		2
 #define ACPI_MADT_REV_ACPI_4_0		3
 #define ACPI_MADT_REV_ACPI_5_0		3
-#define ACPI_MADT_REV_ACPI_6_0		5
+#define ACPI_MADT_REV_ACPI_6_2		4
+#define ACPI_MADT_REV_ACPI_6_3		5
 
 #define ACPI_MCFG_REV_ACPI_3_0		1
 
diff --git a/lib/acpi/acpi_table.c b/lib/acpi/acpi_table.c
index 5b9b4d2f290..959cac9e2e3 100644
--- a/lib/acpi/acpi_table.c
+++ b/lib/acpi/acpi_table.c
@@ -63,9 +63,9 @@ int acpi_get_table_revision(enum acpi_tables table)
 {
 	switch (table) {
 	case ACPITAB_FADT:
-		return ACPI_FADT_REV_ACPI_3_0;
+		return ACPI_FADT_REV_ACPI_6_0;
 	case ACPITAB_MADT:
-		return ACPI_MADT_REV_ACPI_3_0;
+		return ACPI_MADT_REV_ACPI_6_2;
 	case ACPITAB_MCFG:
 		return ACPI_MCFG_REV_ACPI_3_0;
 	case ACPITAB_TCPA:
@@ -219,6 +219,7 @@ int acpi_write_fadt(struct acpi_ctx *ctx, const struct acpi_writer *entry)
 	memcpy(header->oem_table_id, OEM_TABLE_ID, 8);
 	memcpy(header->creator_id, ASLC_ID, 4);
 	header->creator_revision = 1;
+	fadt->minor_revision = 2;
 
 	fadt->x_firmware_ctrl = map_to_sysmem(ctx->facs);
 	fadt->x_dsdt = map_to_sysmem(ctx->dsdt);
@@ -254,7 +255,7 @@ int acpi_write_madt(struct acpi_ctx *ctx, const struct acpi_writer *entry)
 	/* Fill out header fields */
 	acpi_fill_header(header, "APIC");
 	header->length = sizeof(struct acpi_madt);
-	header->revision = ACPI_MADT_REV_ACPI_3_0;
+	header->revision = acpi_get_table_revision(ACPITAB_MADT);
 
 	acpi_inc(ctx, sizeof(struct acpi_madt));
 	/* TODO: Get rid of acpi_fill_madt and use driver model */