3 files changed, 75 insertions, 0 deletions
diff --git a/src/mainboard/google/brya/acpi/gpu_defines.h b/src/mainboard/google/brya/acpi/gpu_defines.h
index 65a8ee942e..ec79f81b7d 100644
--- a/src/mainboard/google/brya/acpi/gpu_defines.h
+++ b/src/mainboard/google/brya/acpi/gpu_defines.h
@@ -38,7 +38,9 @@
 #define UUID_NVOP		"a486d8f8-0bda-471b-a72b-6042a6b5bee0"
 #define UUID_NVJT		"cbeca351-067b-4924-9cbd-b46b00b86f34"
 #define UUID_NBCI		"d4a50b75-65c7-46f7-bfb7-41514cea0244"
+#define UUID_NVPCF		"36b49710-2483-11e7-9598-0800200c9a66"
 
 #define REVISION_MIN_NVOP	0x100
 #define REVISION_MIN_NVJT	0x100
 #define REVISION_MIN_NBCI	0x102
+#define REVISION_MIN_NVPCF	0x200
diff --git a/src/mainboard/google/brya/acpi/gpu_top.asl b/src/mainboard/google/brya/acpi/gpu_top.asl
index b7e90335b6..6b492231e3 100644
--- a/src/mainboard/google/brya/acpi/gpu_top.asl
+++ b/src/mainboard/google/brya/acpi/gpu_top.asl
@@ -23,6 +23,7 @@ Scope (\_SB.PCI0.PEG0)
 		#include "nvop.asl"
 		#include "nvjt.asl"
 		#include "nbci.asl"
+		#include "nvpcf.asl"
 
 		Method (_DSM, 4, Serialized)
 		{
@@ -47,6 +48,13 @@ Scope (\_SB.PCI0.PEG0)
 					Return (NBCI (Arg2, Arg3))
 				}
 			}
+			ElseIf (Arg0 == ToUUID (UUID_NVPCF))
+			{
+				If (ToInteger (Arg1) >= REVISION_MIN_NVPCF)
+				{
+					Return (NPCF (Arg2, Arg3))
+				}
+			}
 
 			Return (NV_ERROR_UNSUPPORTED)
 		}
diff --git a/src/mainboard/google/brya/acpi/nvpcf.asl b/src/mainboard/google/brya/acpi/nvpcf.asl
new file mode 100644
index 0000000000..019a5c1742
--- /dev/null
+++ b/src/mainboard/google/brya/acpi/nvpcf.asl
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#define NVPCF_FUNC_SUPPORT			0
+#define NVPCF_FUNC_GET_STATIC_CONFIG_TABLES	1
+#define NVPCF_FUNC_UPDATE_DYNAMIC_PARAMS	2
+
+Method (NPCF, 2, Serialized)
+{
+	Switch (ToInteger (Arg0))
+	{
+		Case (NVPCF_FUNC_SUPPORT)
+		{
+			Return (ITOB(
+				(1 << NVPCF_FUNC_SUPPORT) |
+				(1 << NVPCF_FUNC_GET_STATIC_CONFIG_TABLES) |
+				(1 << NVPCF_FUNC_UPDATE_DYNAMIC_PARAMS)))
+		}
+		Case (NVPCF_FUNC_GET_STATIC_CONFIG_TABLES)
+		{
+			Return (Buffer () {
+				/* System Device Table Header (v2.0) */
+				0x20, 0x03, 0x01,
+
+				/* System Device Table Entries */
+				0x00,			/* [3:0] CPU type (0=Intel, 1=AMD),
+							   [7:4] GPU type (0=Nvidia) */
+
+				/* System Controller Table Header (v2.2), 1 controller entry */
+				0x22, 0x04, 0x05, 0x01,
+
+				/* Controller #1 Flags */
+				0x01,			/* [3:0] Controller class
+							      0=Disabled, 1=Dynamic Boost,
+							      2=CTGP-only.
+							   [7:4] Reserved. Set to 0. */
+				/* Controller #1 Params */
+				0x00,			/* Class = Dynamic Boost
+							   [0:0] DC support
+							      0=Not supported, 1=Supported
+							   [31:1] Reserved. Set to 0. */
+				0x00, 0x00, 0x00, 0x00,
+
+				/* Twos-complement checksum */
+				0xad
+			})
+		}
+		Case (NVPCF_FUNC_UPDATE_DYNAMIC_PARAMS)
+		{
+			Local0 = Buffer (0x31) {
+				/* Dynamic Params Table Header (1 controller entry, 0x1c bytes) */
+				0x22, 0x05, 0x10, 0x1c, 0x01 }
+
+			CreateWordField (Local0, 0x05, TGPA)
+			CreateDWordField (Local0, 0x15, CEO0)
+
+			TGPA = 0x50	/* TGP on AC = 10W in 1/8-Watt increments */
+			CEO0 = 0x200	/* [7:0] Controller index
+					   [8:8] Disable controller on AC
+					   [9:9] Disable controller on DC */
+			Return (Local0)
+		}
+	}
+
+	Return (NV_ERROR_UNSUPPORTED)
+}