From c2324188f20d0d4d76cce6c54cd665a1aeaa2875 Mon Sep 17 00:00:00 2001
From: Nicholas Chin <nic.c3.14@gmail.com>
Date: Mon, 30 Sep 2024 20:44:38 -0400
Subject: [PATCH 1/9] mb/dell: Add Optiplex 780 MT (x4x/ICH10)

Change-Id: Idb45737ce95bfd26e978323c650de7d308b5079c
Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
---
 src/mainboard/dell/optiplex_780/Kconfig       |  40 ++++
 src/mainboard/dell/optiplex_780/Kconfig.name  |   4 +
 src/mainboard/dell/optiplex_780/Makefile.mk   |  10 +
 src/mainboard/dell/optiplex_780/acpi/ec.asl   |   5 +
 .../dell/optiplex_780/acpi/ich10_pci_irqs.asl |  32 ++++
 .../dell/optiplex_780/acpi/superio.asl        |  18 ++
 .../dell/optiplex_780/board_info.txt          |   6 +
 src/mainboard/dell/optiplex_780/cmos.default  |   8 +
 src/mainboard/dell/optiplex_780/cmos.layout   |  72 ++++++++
 src/mainboard/dell/optiplex_780/cstates.c     |   8 +
 src/mainboard/dell/optiplex_780/devicetree.cb |  63 +++++++
 src/mainboard/dell/optiplex_780/dsdt.asl      |  26 +++
 .../dell/optiplex_780/gma-mainboard.ads       |  16 ++
 .../optiplex_780/variants/780_mt/data.vbt     | Bin 0 -> 1917 bytes
 .../optiplex_780/variants/780_mt/early_init.c |  12 ++
 .../dell/optiplex_780/variants/780_mt/gpio.c  | 174 ++++++++++++++++++
 .../optiplex_780/variants/780_mt/hda_verb.c   |  26 +++
 .../variants/780_mt/overridetree.cb           |  10 +
 18 files changed, 530 insertions(+)
 create mode 100644 src/mainboard/dell/optiplex_780/Kconfig
 create mode 100644 src/mainboard/dell/optiplex_780/Kconfig.name
 create mode 100644 src/mainboard/dell/optiplex_780/Makefile.mk
 create mode 100644 src/mainboard/dell/optiplex_780/acpi/ec.asl
 create mode 100644 src/mainboard/dell/optiplex_780/acpi/ich10_pci_irqs.asl
 create mode 100644 src/mainboard/dell/optiplex_780/acpi/superio.asl
 create mode 100644 src/mainboard/dell/optiplex_780/board_info.txt
 create mode 100644 src/mainboard/dell/optiplex_780/cmos.default
 create mode 100644 src/mainboard/dell/optiplex_780/cmos.layout
 create mode 100644 src/mainboard/dell/optiplex_780/cstates.c
 create mode 100644 src/mainboard/dell/optiplex_780/devicetree.cb
 create mode 100644 src/mainboard/dell/optiplex_780/dsdt.asl
 create mode 100644 src/mainboard/dell/optiplex_780/gma-mainboard.ads
 create mode 100644 src/mainboard/dell/optiplex_780/variants/780_mt/data.vbt
 create mode 100644 src/mainboard/dell/optiplex_780/variants/780_mt/early_init.c
 create mode 100644 src/mainboard/dell/optiplex_780/variants/780_mt/gpio.c
 create mode 100644 src/mainboard/dell/optiplex_780/variants/780_mt/hda_verb.c
 create mode 100644 src/mainboard/dell/optiplex_780/variants/780_mt/overridetree.cb

diff --git a/src/mainboard/dell/optiplex_780/Kconfig b/src/mainboard/dell/optiplex_780/Kconfig
new file mode 100644
index 0000000000..2d06c75c9a
--- /dev/null
+++ b/src/mainboard/dell/optiplex_780/Kconfig
@@ -0,0 +1,40 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
+config BOARD_DELL_OPTIPLEX_780_COMMON
+	def_bool n
+	select BOARD_ROMSIZE_KB_8192
+	select CPU_INTEL_SOCKET_LGA775
+	select DRIVERS_I2C_CK505
+	select HAVE_ACPI_RESUME
+	select HAVE_ACPI_TABLES
+	select HAVE_CMOS_DEFAULT
+	select HAVE_OPTION_TABLE
+	select INTEL_GMA_HAVE_VBT
+	select MAINBOARD_HAS_LIBGFXINIT
+	select MAINBOARD_USES_IFD_GBE_REGION
+	select NORTHBRIDGE_INTEL_X4X
+	select PCIEXP_ASPM
+	select PCIEXP_CLK_PM
+	select SOUTHBRIDGE_INTEL_I82801JX
+
+config BOARD_DELL_OPTIPLEX_780_MT
+	select BOARD_DELL_OPTIPLEX_780_COMMON
+
+if BOARD_DELL_OPTIPLEX_780_COMMON
+
+config VGA_BIOS_ID
+	default "8086,2e22"
+
+config MAINBOARD_DIR
+	default "dell/optiplex_780"
+
+config MAINBOARD_PART_NUMBER
+	default "OptiPlex 780 MT" if BOARD_DELL_OPTIPLEX_780_MT
+
+config OVERRIDE_DEVICETREE
+	default "variants/\$(CONFIG_VARIANT_DIR)/overridetree.cb"
+
+config VARIANT_DIR
+	default "780_mt" if BOARD_DELL_OPTIPLEX_780_MT
+
+endif # BOARD_DELL_OPTIPLEX_780_COMMON
diff --git a/src/mainboard/dell/optiplex_780/Kconfig.name b/src/mainboard/dell/optiplex_780/Kconfig.name
new file mode 100644
index 0000000000..db7f2e8fe3
--- /dev/null
+++ b/src/mainboard/dell/optiplex_780/Kconfig.name
@@ -0,0 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
+config BOARD_DELL_OPTIPLEX_780_MT
+	bool "OptiPlex 780 MT"
diff --git a/src/mainboard/dell/optiplex_780/Makefile.mk b/src/mainboard/dell/optiplex_780/Makefile.mk
new file mode 100644
index 0000000000..d462995d75
--- /dev/null
+++ b/src/mainboard/dell/optiplex_780/Makefile.mk
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+ramstage-y += cstates.c
+romstage-y += variants/$(VARIANT_DIR)/gpio.c
+
+bootblock-y += variants/$(VARIANT_DIR)/early_init.c
+romstage-y += variants/$(VARIANT_DIR)/early_init.c
+
+ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += gma-mainboard.ads
+ramstage-y += variants/$(VARIANT_DIR)/hda_verb.c
diff --git a/src/mainboard/dell/optiplex_780/acpi/ec.asl b/src/mainboard/dell/optiplex_780/acpi/ec.asl
new file mode 100644
index 0000000000..479296cb76
--- /dev/null
+++ b/src/mainboard/dell/optiplex_780/acpi/ec.asl
@@ -0,0 +1,5 @@
+/* SPDX-License-Identifier: CC-PDDC */
+
+/* Please update the license if adding licensable material. */
+
+/* dummy */
diff --git a/src/mainboard/dell/optiplex_780/acpi/ich10_pci_irqs.asl b/src/mainboard/dell/optiplex_780/acpi/ich10_pci_irqs.asl
new file mode 100644
index 0000000000..b7588dcc41
--- /dev/null
+++ b/src/mainboard/dell/optiplex_780/acpi/ich10_pci_irqs.asl
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/* This is board specific information:
+ * IRQ routing for the 0:1e.0 PCI bridge of the ICH10
+ */
+
+If (PICM) {
+	Return (Package() {
+		/* PCI slot */
+		Package() { 0x0001ffff, 0, 0, 0x14},
+		Package() { 0x0001ffff, 1, 0, 0x15},
+		Package() { 0x0001ffff, 2, 0, 0x16},
+		Package() { 0x0001ffff, 3, 0, 0x17},
+
+		Package() { 0x0002ffff, 0, 0, 0x15},
+		Package() { 0x0002ffff, 1, 0, 0x16},
+		Package() { 0x0002ffff, 2, 0, 0x17},
+		Package() { 0x0002ffff, 3, 0, 0x14},
+	})
+} Else {
+	Return (Package() {
+		Package() { 0x0001ffff, 0, \_SB.PCI0.LPCB.LNKE, 0},
+		Package() { 0x0001ffff, 1, \_SB.PCI0.LPCB.LNKF, 0},
+		Package() { 0x0001ffff, 2, \_SB.PCI0.LPCB.LNKG, 0},
+		Package() { 0x0001ffff, 3, \_SB.PCI0.LPCB.LNKH, 0},
+
+		Package() { 0x0002ffff, 0, \_SB.PCI0.LPCB.LNKF, 0},
+		Package() { 0x0002ffff, 1, \_SB.PCI0.LPCB.LNKG, 0},
+		Package() { 0x0002ffff, 2, \_SB.PCI0.LPCB.LNKH, 0},
+		Package() { 0x0002ffff, 3, \_SB.PCI0.LPCB.LNKE, 0},
+	})
+}
diff --git a/src/mainboard/dell/optiplex_780/acpi/superio.asl b/src/mainboard/dell/optiplex_780/acpi/superio.asl
new file mode 100644
index 0000000000..9f3900b86c
--- /dev/null
+++ b/src/mainboard/dell/optiplex_780/acpi/superio.asl
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#undef SUPERIO_DEV
+#undef SUPERIO_PNP_BASE
+#undef IT8720F_SHOW_SP1
+#undef IT8720F_SHOW_SP2
+#undef IT8720F_SHOW_EC
+#undef IT8720F_SHOW_KBCK
+#undef IT8720F_SHOW_KBCM
+#undef IT8720F_SHOW_GPIO
+#undef IT8720F_SHOW_CIR
+#define SUPERIO_DEV		SIO0
+#define SUPERIO_PNP_BASE	0x2e
+#define IT8720F_SHOW_EC		1
+#define IT8720F_SHOW_KBCK	1
+#define IT8720F_SHOW_KBCM	1
+#define IT8720F_SHOW_GPIO	1
+#include <superio/ite/it8720f/acpi/superio.asl>
diff --git a/src/mainboard/dell/optiplex_780/board_info.txt b/src/mainboard/dell/optiplex_780/board_info.txt
new file mode 100644
index 0000000000..aaf657b583
--- /dev/null
+++ b/src/mainboard/dell/optiplex_780/board_info.txt
@@ -0,0 +1,6 @@
+Category: desktop
+Board URL: https://www.acer.com/ac/en/GB/content/support-product/1137?b=1
+ROM package: SOIC-8
+ROM protocol: SPI
+ROM socketed: n
+Flashrom support: y
diff --git a/src/mainboard/dell/optiplex_780/cmos.default b/src/mainboard/dell/optiplex_780/cmos.default
new file mode 100644
index 0000000000..23f0e55f3e
--- /dev/null
+++ b/src/mainboard/dell/optiplex_780/cmos.default
@@ -0,0 +1,8 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
+boot_option=Fallback
+debug_level=Debug
+power_on_after_fail=Disable
+nmi=Enable
+sata_mode=AHCI
+gfx_uma_size=64M
diff --git a/src/mainboard/dell/optiplex_780/cmos.layout b/src/mainboard/dell/optiplex_780/cmos.layout
new file mode 100644
index 0000000000..9f5012adb4
--- /dev/null
+++ b/src/mainboard/dell/optiplex_780/cmos.layout
@@ -0,0 +1,72 @@
+## SPDX-License-Identifier: GPL-2.0-only
+
+# -----------------------------------------------------------------
+entries
+
+# -----------------------------------------------------------------
+0	120	r	0	reserved_memory
+
+# -----------------------------------------------------------------
+# RTC_BOOT_BYTE (coreboot hardcoded)
+384	1	e	4	boot_option
+388	4	h	0	reboot_counter
+
+# -----------------------------------------------------------------
+# coreboot config options: console
+395	4	e	6	debug_level
+
+# coreboot config options: southbridge
+408	1	e	10	sata_mode
+409	2	e	7	power_on_after_fail
+411	1	e	1	nmi
+
+# coreboot config options: cpu
+
+# coreboot config options: northbridge
+432	4	e	11	gfx_uma_size
+
+# coreboot config options: check sums
+984	16	h	0	check_sum
+
+# -----------------------------------------------------------------
+
+enumerations
+
+#ID	value	text
+1	0	Disable
+1	1	Enable
+2	0	Enable
+2	1	Disable
+4	0	Fallback
+4	1	Normal
+6	0	Emergency
+6	1	Alert
+6	2	Critical
+6	3	Error
+6	4	Warning
+6	5	Notice
+6	6	Info
+6	7	Debug
+6	8	Spew
+7	0	Disable
+7	1	Enable
+7	2	Keep
+10	0	AHCI
+10	1	Compatible
+11	1	4M
+11	2	8M
+11	3	16M
+11	4	32M
+11	5	48M
+11	6	64M
+11	7	128M
+11	8	256M
+11	9	96M
+11	10	160M
+11	11	224M
+11	12	352M
+
+# -----------------------------------------------------------------
+checksums
+
+checksum 392 983 984
diff --git a/src/mainboard/dell/optiplex_780/cstates.c b/src/mainboard/dell/optiplex_780/cstates.c
new file mode 100644
index 0000000000..4adf0edc63
--- /dev/null
+++ b/src/mainboard/dell/optiplex_780/cstates.c
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <acpi/acpigen.h>
+
+int get_cst_entries(const acpi_cstate_t **entries)
+{
+	return 0;
+}
diff --git a/src/mainboard/dell/optiplex_780/devicetree.cb b/src/mainboard/dell/optiplex_780/devicetree.cb
new file mode 100644
index 0000000000..95e3bd517c
--- /dev/null
+++ b/src/mainboard/dell/optiplex_780/devicetree.cb
@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+chip northbridge/intel/x4x
+	device cpu_cluster 0 on ops x4x_cpu_bus_ops end		# APIC cluster
+	device domain 0 on
+		ops x4x_pci_domain_ops		# PCI domain
+		subsystemid 0x8086 0x0028 inherit
+		device pci 0.0 on  end		# Host Bridge
+		device pci 1.0 on  end		# PCIe x16 2.0 slot
+		device pci 2.0 on  end		# Integrated graphics controller
+		device pci 2.1 on  end		# Integrated graphics controller 2
+		device pci 3.0 off end		# ME
+		device pci 3.1 off end		# ME
+		chip southbridge/intel/i82801jx	# ICH10
+			register "gpe0_en" = "0x40"
+
+			# Set AHCI mode.
+			register "sata_port_map"	= "0x3f"
+			register "sata_clock_request"	= "1"
+
+			# Enable PCIe ports 0,1 as slots.
+			register "pcie_slot_implemented" = "0x3"
+
+			device pci 19.0 on  end		# GBE
+			device pci 1a.0 on  end		# USB
+			device pci 1a.1 on  end		# USB
+			device pci 1a.2 on  end		# USB
+			device pci 1a.7 on  end		# USB
+			device pci 1b.0 on  end		# Audio
+			device pci 1c.0 off end		# PCIe 1
+			device pci 1c.1 off end		# PCIe 2
+			device pci 1c.2 off end		# PCIe 3
+			device pci 1c.3 off end		# PCIe 4
+			device pci 1c.4 off end		# PCIe 5
+			device pci 1c.5 off end		# PCIe 6
+			device pci 1d.0 on  end		# USB
+			device pci 1d.1 on  end		# USB
+			device pci 1d.2 on  end		# USB
+			device pci 1d.7 on  end		# USB
+			device pci 1e.0 on  end		# PCI bridge
+			device pci 1f.0 on  end		# LPC bridge
+			device pci 1f.2 on  end		# SATA (IDE: port 0-3, AHCI/RAID: 0-5)
+			device pci 1f.3 on		# SMBus
+				chip drivers/i2c/ck505	# IDT CV194
+					register "mask" = "{ 0xff, 0xff, 0xff, 0xff,
+							     0xff, 0xff, 0xff, 0xff,
+							     0xff, 0xff, 0xff, 0xff,
+							     0xff, 0xff, 0xff, 0xff,
+							     0xff, 0xff, 0xff }"
+					register "regs" = "{ 0x15, 0x82, 0xff, 0xff,
+							     0xff, 0x00, 0x00, 0x95,
+							     0x00, 0x65, 0x7d, 0x56,
+							     0x13, 0xc0, 0x00, 0x07,
+							     0x01, 0x0a, 0x64 }"
+					device i2c 69 on end
+				end
+			end
+			device pci 1f.4 off end
+			device pci 1f.5 off end		# SATA 2 (for port 4-5 in IDE mode)
+			device pci 1f.6 off end		# Thermal Subsystem
+		end
+	end
+end
diff --git a/src/mainboard/dell/optiplex_780/dsdt.asl b/src/mainboard/dell/optiplex_780/dsdt.asl
new file mode 100644
index 0000000000..9ad70469de
--- /dev/null
+++ b/src/mainboard/dell/optiplex_780/dsdt.asl
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <acpi/acpi.h>
+DefinitionBlock(
+	"dsdt.aml",
+	"DSDT",
+	ACPI_DSDT_REV_2,
+	OEM_ID,
+	ACPI_TABLE_CREATOR,
+	0x20090811	// OEM revision
+)
+{
+	#include <acpi/dsdt_top.asl>
+
+	OSYS = 2002
+	// global NVS and variables
+	#include <southbridge/intel/common/acpi/platform.asl>
+
+	Device (\_SB.PCI0)
+	{
+		#include <northbridge/intel/x4x/acpi/x4x.asl>
+		#include <southbridge/intel/i82801jx/acpi/ich10.asl>
+	}
+
+	#include <southbridge/intel/common/acpi/sleepstates.asl>
+}
diff --git a/src/mainboard/dell/optiplex_780/gma-mainboard.ads b/src/mainboard/dell/optiplex_780/gma-mainboard.ads
new file mode 100644
index 0000000000..bc81cf4a40
--- /dev/null
+++ b/src/mainboard/dell/optiplex_780/gma-mainboard.ads
@@ -0,0 +1,16 @@
+-- SPDX-License-Identifier: GPL-2.0-or-later
+
+with HW.GFX.GMA;
+with HW.GFX.GMA.Display_Probing;
+
+use HW.GFX.GMA;
+use HW.GFX.GMA.Display_Probing;
+
+private package GMA.Mainboard is
+
+   ports : constant Port_List :=
+     (DP2,
+      Analog,
+      others => Disabled);
+
+end GMA.Mainboard;
diff --git a/src/mainboard/dell/optiplex_780/variants/780_mt/data.vbt b/src/mainboard/dell/optiplex_780/variants/780_mt/data.vbt
new file mode 100644
index 0000000000000000000000000000000000000000..fefda9d6f226b88ab67c5b044de30a707df22fbf
GIT binary patch
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diff --git a/src/mainboard/dell/optiplex_780/variants/780_mt/early_init.c b/src/mainboard/dell/optiplex_780/variants/780_mt/early_init.c
new file mode 100644
index 0000000000..e2fa05cd8f
--- /dev/null
+++ b/src/mainboard/dell/optiplex_780/variants/780_mt/early_init.c
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <northbridge/intel/x4x/x4x.h>
+
+void mb_get_spd_map(u8 spd_map[4])
+{
+	// BTX form factor
+	spd_map[0] = 0x53;
+	spd_map[1] = 0x52;
+	spd_map[2] = 0x51;
+	spd_map[3] = 0x50;
+}
diff --git a/src/mainboard/dell/optiplex_780/variants/780_mt/gpio.c b/src/mainboard/dell/optiplex_780/variants/780_mt/gpio.c
new file mode 100644
index 0000000000..9993f17c55
--- /dev/null
+++ b/src/mainboard/dell/optiplex_780/variants/780_mt/gpio.c
@@ -0,0 +1,174 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <southbridge/intel/common/gpio.h>
+
+static const struct pch_gpio_set1 pch_gpio_set1_mode = {
+	.gpio0  = GPIO_MODE_NATIVE,
+	.gpio1  = GPIO_MODE_NATIVE,
+	.gpio2  = GPIO_MODE_GPIO,
+	.gpio3  = GPIO_MODE_GPIO,
+	.gpio4  = GPIO_MODE_GPIO,
+	.gpio5  = GPIO_MODE_GPIO,
+	.gpio6  = GPIO_MODE_GPIO,
+	.gpio7  = GPIO_MODE_NATIVE,
+	.gpio8  = GPIO_MODE_NATIVE,
+	.gpio9  = GPIO_MODE_GPIO,
+	.gpio10 = GPIO_MODE_GPIO,
+	.gpio11 = GPIO_MODE_NATIVE,
+	.gpio12 = GPIO_MODE_NATIVE,
+	.gpio13 = GPIO_MODE_GPIO,
+	.gpio14 = GPIO_MODE_GPIO,
+	.gpio15 = GPIO_MODE_NATIVE,
+	.gpio16 = GPIO_MODE_GPIO,
+	.gpio17 = GPIO_MODE_NATIVE,
+	.gpio18 = GPIO_MODE_GPIO,
+	.gpio19 = GPIO_MODE_GPIO,
+	.gpio20 = GPIO_MODE_GPIO,
+	.gpio21 = GPIO_MODE_GPIO,
+	.gpio22 = GPIO_MODE_GPIO,
+	.gpio23 = GPIO_MODE_NATIVE,
+	.gpio24 = GPIO_MODE_GPIO,
+	.gpio25 = GPIO_MODE_NATIVE,
+	.gpio26 = GPIO_MODE_NATIVE,
+	.gpio27 = GPIO_MODE_GPIO,
+	.gpio28 = GPIO_MODE_GPIO,
+	.gpio29 = GPIO_MODE_GPIO,
+	.gpio30 = GPIO_MODE_GPIO,
+	.gpio31 = GPIO_MODE_GPIO,
+};
+
+static const struct pch_gpio_set1 pch_gpio_set1_direction = {
+	.gpio2  = GPIO_DIR_INPUT,
+	.gpio3  = GPIO_DIR_INPUT,
+	.gpio4  = GPIO_DIR_INPUT,
+	.gpio5  = GPIO_DIR_INPUT,
+	.gpio6  = GPIO_DIR_INPUT,
+	.gpio9  = GPIO_DIR_OUTPUT,
+	.gpio10 = GPIO_DIR_INPUT,
+	.gpio13 = GPIO_DIR_INPUT,
+	.gpio14 = GPIO_DIR_INPUT,
+	.gpio16 = GPIO_DIR_INPUT,
+	.gpio18 = GPIO_DIR_OUTPUT,
+	.gpio19 = GPIO_DIR_INPUT,
+	.gpio20 = GPIO_DIR_OUTPUT,
+	.gpio21 = GPIO_DIR_INPUT,
+	.gpio22 = GPIO_DIR_INPUT,
+	.gpio24 = GPIO_DIR_INPUT,
+	.gpio27 = GPIO_DIR_INPUT,
+	.gpio28 = GPIO_DIR_OUTPUT,
+	.gpio29 = GPIO_DIR_INPUT,
+	.gpio30 = GPIO_DIR_INPUT,
+	.gpio31 = GPIO_DIR_INPUT,
+};
+
+static const struct pch_gpio_set1 pch_gpio_set1_level = {
+	.gpio9  = GPIO_LEVEL_HIGH,
+	.gpio18 = GPIO_LEVEL_HIGH,
+	.gpio20 = GPIO_LEVEL_HIGH,
+	.gpio28 = GPIO_LEVEL_LOW,
+};
+
+static const struct pch_gpio_set1 pch_gpio_set1_blink = {
+};
+
+static const struct pch_gpio_set1 pch_gpio_set1_invert = {
+	.gpio13 = GPIO_INVERT,
+};
+
+static const struct pch_gpio_set2 pch_gpio_set2_mode = {
+	.gpio32 = GPIO_MODE_GPIO,
+	.gpio33 = GPIO_MODE_GPIO,
+	.gpio34 = GPIO_MODE_GPIO,
+	.gpio35 = GPIO_MODE_GPIO,
+	.gpio36 = GPIO_MODE_GPIO,
+	.gpio37 = GPIO_MODE_GPIO,
+	.gpio38 = GPIO_MODE_GPIO,
+	.gpio39 = GPIO_MODE_GPIO,
+	.gpio40 = GPIO_MODE_NATIVE,
+	.gpio41 = GPIO_MODE_NATIVE,
+	.gpio42 = GPIO_MODE_NATIVE,
+	.gpio43 = GPIO_MODE_NATIVE,
+	.gpio44 = GPIO_MODE_NATIVE,
+	.gpio45 = GPIO_MODE_NATIVE,
+	.gpio46 = GPIO_MODE_NATIVE,
+	.gpio47 = GPIO_MODE_NATIVE,
+	.gpio48 = GPIO_MODE_GPIO,
+	.gpio49 = GPIO_MODE_GPIO,
+	.gpio50 = GPIO_MODE_NATIVE,
+	.gpio51 = GPIO_MODE_NATIVE,
+	.gpio52 = GPIO_MODE_NATIVE,
+	.gpio53 = GPIO_MODE_NATIVE,
+	.gpio54 = GPIO_MODE_GPIO,
+	.gpio55 = GPIO_MODE_NATIVE,
+	.gpio56 = GPIO_MODE_GPIO,
+	.gpio57 = GPIO_MODE_GPIO,
+	.gpio58 = GPIO_MODE_NATIVE,
+	.gpio59 = GPIO_MODE_NATIVE,
+	.gpio60 = GPIO_MODE_GPIO,
+	.gpio61 = GPIO_MODE_NATIVE,
+	.gpio62 = GPIO_MODE_NATIVE,
+	.gpio63 = GPIO_MODE_NATIVE,
+};
+
+static const struct pch_gpio_set2 pch_gpio_set2_direction = {
+	.gpio32 = GPIO_DIR_INPUT,
+	.gpio33 = GPIO_DIR_INPUT,
+	.gpio34 = GPIO_DIR_INPUT,
+	.gpio35 = GPIO_DIR_OUTPUT,
+	.gpio36 = GPIO_DIR_INPUT,
+	.gpio37 = GPIO_DIR_INPUT,
+	.gpio38 = GPIO_DIR_INPUT,
+	.gpio39 = GPIO_DIR_INPUT,
+	.gpio48 = GPIO_DIR_INPUT,
+	.gpio49 = GPIO_DIR_OUTPUT,
+	.gpio54 = GPIO_DIR_INPUT,
+	.gpio56 = GPIO_DIR_OUTPUT,
+	.gpio57 = GPIO_DIR_INPUT,
+	.gpio60 = GPIO_DIR_OUTPUT,
+};
+
+static const struct pch_gpio_set2 pch_gpio_set2_level = {
+	.gpio35 = GPIO_LEVEL_LOW,
+	.gpio49 = GPIO_LEVEL_HIGH,
+	.gpio56 = GPIO_LEVEL_HIGH,
+	.gpio60 = GPIO_LEVEL_LOW,
+};
+
+static const struct pch_gpio_set3 pch_gpio_set3_mode = {
+	.gpio64 = GPIO_MODE_NATIVE,
+	.gpio65 = GPIO_MODE_NATIVE,
+	.gpio66 = GPIO_MODE_NATIVE,
+	.gpio67 = GPIO_MODE_NATIVE,
+	.gpio68 = GPIO_MODE_NATIVE,
+	.gpio69 = GPIO_MODE_NATIVE,
+	.gpio70 = GPIO_MODE_NATIVE,
+	.gpio71 = GPIO_MODE_NATIVE,
+	.gpio72 = GPIO_MODE_GPIO,
+};
+
+static const struct pch_gpio_set3 pch_gpio_set3_direction = {
+	.gpio72 = GPIO_DIR_INPUT,
+};
+
+static const struct pch_gpio_set3 pch_gpio_set3_level = {
+};
+
+const struct pch_gpio_map mainboard_gpio_map = {
+	.set1 = {
+		.mode      = &pch_gpio_set1_mode,
+		.direction = &pch_gpio_set1_direction,
+		.level     = &pch_gpio_set1_level,
+		.blink     = &pch_gpio_set1_blink,
+		.invert    = &pch_gpio_set1_invert,
+	},
+	.set2 = {
+		.mode      = &pch_gpio_set2_mode,
+		.direction = &pch_gpio_set2_direction,
+		.level     = &pch_gpio_set2_level,
+	},
+	.set3 = {
+		.mode      = &pch_gpio_set3_mode,
+		.direction = &pch_gpio_set3_direction,
+		.level     = &pch_gpio_set3_level,
+	},
+};
diff --git a/src/mainboard/dell/optiplex_780/variants/780_mt/hda_verb.c b/src/mainboard/dell/optiplex_780/variants/780_mt/hda_verb.c
new file mode 100644
index 0000000000..4158bcf899
--- /dev/null
+++ b/src/mainboard/dell/optiplex_780/variants/780_mt/hda_verb.c
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <device/azalia_device.h>
+
+const u32 cim_verb_data[] = {
+	/* coreboot specific header */
+	0x11d4194a, /* Analog Devices AD1984A */
+	0xbfd40000, /*  Subsystem ID */
+	10,         /* Number of entries */
+
+	/* Pin Widget Verb Table */
+	AZALIA_PIN_CFG(0, 0x11, 0x032140f0),
+	AZALIA_PIN_CFG(0, 0x12, 0x21214010),
+	AZALIA_PIN_CFG(0, 0x13, 0x901701f0),
+	AZALIA_PIN_CFG(0, 0x14, 0x03a190f0),
+	AZALIA_PIN_CFG(0, 0x15, 0xb7a70121),
+	AZALIA_PIN_CFG(0, 0x16, 0x9933012e),
+	AZALIA_PIN_CFG(0, 0x17, 0x97a601f0),
+	AZALIA_PIN_CFG(0, 0x1a, 0x90f301f0),
+	AZALIA_PIN_CFG(0, 0x1b, 0x014510f0),
+	AZALIA_PIN_CFG(0, 0x1c, 0x21a19020),
+};
+
+const u32 pc_beep_verbs[0] = {};
+
+AZALIA_ARRAY_SIZES;
diff --git a/src/mainboard/dell/optiplex_780/variants/780_mt/overridetree.cb b/src/mainboard/dell/optiplex_780/variants/780_mt/overridetree.cb
new file mode 100644
index 0000000000..555b1c1f5c
--- /dev/null
+++ b/src/mainboard/dell/optiplex_780/variants/780_mt/overridetree.cb
@@ -0,0 +1,10 @@
+## SPDX-License-Identifier: GPL-2.0-or-later
+
+chip northbridge/intel/x4x
+	device domain 0 on
+		chip southbridge/intel/i82801jx
+			device pci 1c.0 on  end		# PCIe 1
+			device pci 1c.1 on  end		# PCIe 2
+		end
+	end
+end
-- 
2.39.5

