2 files changed, 54 insertions, 0 deletions
diff --git a/src/mainboard/google/volteer/dsdt.asl b/src/mainboard/google/volteer/dsdt.asl
index af881ae859..450835db03 100644
--- a/src/mainboard/google/volteer/dsdt.asl
+++ b/src/mainboard/google/volteer/dsdt.asl
@@ -32,11 +32,17 @@ DefinitionBlock(
 			#include <soc/intel/common/block/acpi/acpi/northbridge.asl>
 			#include <soc/intel/tigerlake/acpi/southbridge.asl>
 		}
+		/* Mainboard hooks */
+		#include "mainboard.asl"
 	}
 
 	// Chrome OS specific
 	#include <vendorcode/google/chromeos/acpi/chromeos.asl>
 
+	/* Include Low power idle table for a short term workaround to enable
+	   S0ix. Once cr50 pulse width is fixed, this can be removed. */
+	#include <soc/intel/common/acpi/lpit.asl>
+
 	// Chrome OS Embedded Controller
 	Scope (\_SB.PCI0.LPCB)
 	{
diff --git a/src/mainboard/google/volteer/mainboard.asl b/src/mainboard/google/volteer/mainboard.asl
new file mode 100644
index 0000000000..d58822d719
--- /dev/null
+++ b/src/mainboard/google/volteer/mainboard.asl
@@ -0,0 +1,48 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include <intelblocks/gpio.h>
+
+Method (PGPM, 1, Serialized)
+{
+	For (Local0 = 0, Local0 < 6, Local0++)
+	{
+		\_SB.PCI0.CGPM (Local0, Arg0)
+	}
+}
+
+/*
+ * Method called from _PTS prior to system sleep state entry
+ * Enables dynamic clock gating for all 5 GPIO communities
+ */
+Method (MPTS, 1, Serialized)
+{
+	PGPM (MISCCFG_ENABLE_GPIO_PM_CONFIG)
+}
+
+/*
+ * Method called from _WAK prior to system sleep state wakeup
+ * Disables dynamic clock gating for all 5 GPIO communities
+ */
+Method (MWAK, 1, Serialized)
+{
+	PGPM (0)
+}
+
+/*
+ * S0ix Entry/Exit Notifications
+ * Called from \_SB.LPID._DSM
+ */
+Method (MS0X, 1, Serialized)
+{
+	If (Arg0 == 1) {
+		/* S0ix Entry */
+		PGPM (MISCCFG_ENABLE_GPIO_PM_CONFIG)
+	} Else {
+		/* S0ix Exit */
+		PGPM (0)
+	}
+}