mb/system76/gaze15: Add Gazelle 14 as a variant

Change-Id: Ib455951d1d26ddfa010d4eb579905235bd1385a9
Signed-off-by: Jeremy Soller <jeremy@system76.com>
Signed-off-by: Tim Crawford <tcrawford@system76.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52295
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

8 files changed, 339 insertions, 1 deletions

diff --git a/src/mainboard/system76/gaze15/Kconfig b/src/mainboard/system76/gaze15/Kconfig
index e82a845283..6f84e86a48 100644
--- a/src/mainboard/system76/gaze15/Kconfig
+++ b/src/mainboard/system76/gaze15/Kconfig
@@ -1,4 +1,4 @@
-if BOARD_SYSTEM76_GAZE15
+if BOARD_SYSTEM76_GAZE14 || BOARD_SYSTEM76_GAZE15
 
 config BOARD_SPECIFIC_OPTIONS
 	def_bool y
@@ -17,27 +17,32 @@ config BOARD_SPECIFIC_OPTIONS
 	select MAINBOARD_HAS_TPM2
 	select NO_UART_ON_SUPERIO
 	select SOC_INTEL_CANNONLAKE_PCH_H
+	select SOC_INTEL_COFFEELAKE if BOARD_SYSTEM76_GAZE14
 	select SOC_INTEL_COMETLAKE_1 if BOARD_SYSTEM76_GAZE15
 	select SOC_INTEL_COMMON_BLOCK_HDA_VERB
 	select SPD_READ_BY_WORD
 	select SYSTEM_TYPE_LAPTOP
+	select TPM_RDRESP_NEED_DELAY
 
 config MAINBOARD_DIR
 	default "system76/gaze15"
 
 config VARIANT_DIR
+	default "gaze14" if BOARD_SYSTEM76_GAZE14
 	default "gaze15" if BOARD_SYSTEM76_GAZE15
 
 config OVERRIDE_DEVICETREE
 	default "variants/\$(CONFIG_VARIANT_DIR)/overridetree.cb"
 
 config MAINBOARD_PART_NUMBER
+	default "gaze14" if BOARD_SYSTEM76_GAZE14
 	default "gaze15" if BOARD_SYSTEM76_GAZE15
 
 config MAINBOARD_SMBIOS_PRODUCT_NAME
 	default "Gazelle"
 
 config MAINBOARD_VERSION
+	default "gaze14" if BOARD_SYSTEM76_GAZE14
 	default "gaze15" if BOARD_SYSTEM76_GAZE15
 
 config CBFS_SIZE
diff --git a/src/mainboard/system76/gaze15/Kconfig.name b/src/mainboard/system76/gaze15/Kconfig.name
index dd152081d9..f325acd404 100644
--- a/src/mainboard/system76/gaze15/Kconfig.name
+++ b/src/mainboard/system76/gaze15/Kconfig.name
@@ -1,2 +1,5 @@
+config BOARD_SYSTEM76_GAZE14
+	bool "gaze14"
+
 config BOARD_SYSTEM76_GAZE15
 	bool "gaze15"
diff --git a/src/mainboard/system76/gaze15/variants/gaze14/board_info.txt b/src/mainboard/system76/gaze15/variants/gaze14/board_info.txt
new file mode 100644
index 0000000000..4c3cca9679
--- /dev/null
+++ b/src/mainboard/system76/gaze15/variants/gaze14/board_info.txt
@@ -0,0 +1,2 @@
+Board name: gaze14
+Release year: 2019
diff --git a/src/mainboard/system76/gaze15/variants/gaze14/data.vbt b/src/mainboard/system76/gaze15/variants/gaze14/data.vbt
new file mode 100644
index 0000000000..8864018a47
--- /dev/null
+++ b/src/mainboard/system76/gaze15/variants/gaze14/data.vbt
diff --git a/src/mainboard/system76/gaze15/variants/gaze14/gpio.c b/src/mainboard/system76/gaze15/variants/gaze14/gpio.c
new file mode 100644
index 0000000000..23d3a2ddef
--- /dev/null
+++ b/src/mainboard/system76/gaze15/variants/gaze14/gpio.c
@@ -0,0 +1,263 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <soc/gpio.h>
+#include <variant/gpio.h>
+
+static const struct pad_config gpio_table[] = {
+	/* ------- GPIO Group GPD ------- */
+	PAD_NC(GPD0, NONE), // PM_BATLOW#
+	PAD_CFG_NF(GPD1, NATIVE, DEEP, NF1), // AC_PRESENT
+	PAD_CFG_GPI(GPD2, NATIVE, PWROK), // LAN_WAKEUP#
+	PAD_CFG_NF(GPD3, UP_20K, DEEP, NF1), // PWR_BTN#
+	PAD_CFG_NF(GPD4, NONE, DEEP, NF1), // SUSB#_PCH
+	PAD_CFG_NF(GPD5, NONE, DEEP, NF1), // SUSC#_PCH
+	PAD_NC(GPD6, NONE), // SLP_A#
+	PAD_CFG_GPI(GPD7, NONE, PWROK), // GPD_7 (crystal input)
+	PAD_CFG_NF(GPD8, NONE, DEEP, NF1), // SUS_CLK
+	PAD_NC(GPD9, NONE), // PCH_SLP_WLAN#
+	PAD_NC(GPD10, NONE),
+	PAD_NC(GPD11, NONE), // LAN_DISABLE_N
+
+	/* ------- GPIO Group GPP_A ------- */
+	PAD_CFG_NF(GPP_A0, NONE, DEEP, NF1), // SB_KBCRST#
+	PAD_CFG_NF(GPP_A1, NONE, DEEP, NF1), // LPC_AD0
+	PAD_CFG_NF(GPP_A2, NONE, DEEP, NF1), // LPC_AD1
+	PAD_CFG_NF(GPP_A3, NONE, DEEP, NF1), // LPC_AD2
+	PAD_CFG_NF(GPP_A4, NONE, DEEP, NF1), // LPC_AD3
+	PAD_CFG_NF(GPP_A5, NONE, DEEP, NF1), // LPC_FRAME#
+	PAD_CFG_NF(GPP_A6, NONE, DEEP, NF1), // SERIRQ
+	PAD_CFG_GPI_APIC_HIGH(GPP_A7, NONE, PLTRST), // NC on 1650, INTP_OUT on 1660TI
+	PAD_CFG_NF(GPP_A8, NONE, DEEP, NF1), // PM_CLKRUN#
+	PAD_CFG_NF(GPP_A9, NONE, DEEP, NF1), // PCLK_KBC
+	PAD_NC(GPP_A10, NONE),
+	PAD_CFG_GPI(GPP_A11, NONE, DEEP), // LAN_WAKEUP#
+	PAD_NC(GPP_A12, NONE), // ISH_GP_6_R
+	PAD_NC(GPP_A13, NONE), // SUSWARN#
+	PAD_NC(GPP_A14, NONE), // S4_STATE#
+	PAD_NC(GPP_A15, NONE), // SUS_PWR_ACK#
+	PAD_NC(GPP_A16, NONE),
+	PAD_NC(GPP_A17, NONE),
+	PAD_CFG_GPO(GPP_A18, 1, DEEP), // SB_BLON
+	PAD_NC(GPP_A19, NONE),
+	PAD_NC(GPP_A20, NONE),
+	PAD_NC(GPP_A21, NONE), // 3G_CONFIG2
+	PAD_CFG_GPO(GPP_A22, 0, DEEP), // SATA_PWR_EN
+	PAD_NC(GPP_A23, NONE), // DGPU_PWM_SELECT#
+
+	/* ------- GPIO Group GPP_B ------- */
+	PAD_CFG_GPI(GPP_B0, NONE, DEEP), // TPM_PIRQ#
+	PAD_NC(GPP_B1, NONE),
+	PAD_NC(GPP_B2, NONE), // VRALERTB#
+	PAD_NC(GPP_B3, NONE),
+	PAD_NC(GPP_B4, NONE), // EXTTS_SNI_DRV1
+	PAD_NC(GPP_B5, NONE),
+	PAD_NC(GPP_B6, NONE),
+	PAD_NC(GPP_B7, NONE),
+	PAD_NC(GPP_B8, NONE),
+	PAD_NC(GPP_B9, NONE),
+	PAD_CFG_NF(GPP_B10, NONE, DEEP, NF1), // LAN_CLKREQ#
+	PAD_NC(GPP_B11, NONE), // TODO: DDR Voltage select on 1650, NC on 1660TI
+	PAD_CFG_NF(GPP_B12, NONE, DEEP, NF1), // SLP_S0#
+	PAD_CFG_NF(GPP_B13, NONE, DEEP, NF1), // PLT_RST#
+	PAD_CFG_NF(GPP_B14, NONE, DEEP, NF1), // PCH_SPKR
+	PAD_NC(GPP_B15, NONE),
+	PAD_NC(GPP_B16, NONE),
+	PAD_NC(GPP_B17, NONE),
+	PAD_CFG_NF(GPP_B18, NONE, DEEP, NF1), // NO REBOOT strap
+	PAD_NC(GPP_B19, NONE),
+	PAD_NC(GPP_B20, NONE),
+	PAD_NC(GPP_B21, NONE),
+	PAD_CFG_NF(GPP_B22, NONE, DEEP, NF1), // LPC/SPI BOOT strap
+	PAD_CFG_GPI(GPP_B23, NONE, DEEP), // DCI BSSB mode strap
+
+	/* ------- GPIO Group GPP_C ------- */
+	PAD_CFG_NF(GPP_C0, NONE, DEEP, NF1), // SMB_CLK
+	PAD_CFG_NF(GPP_C1, NONE, DEEP, NF1), // SMB_DATA
+	PAD_CFG_GPI(GPP_C2, NONE, DEEP), // SKIN_THRM_SNSR_ALERT_N
+	PAD_NC(GPP_C3, NONE), // SML0_CLK
+	PAD_NC(GPP_C4, NONE), // SML0_DATA
+	PAD_NC(GPP_C5, NONE),
+	PAD_NC(GPP_C6, NONE), // SMC_CPU_THERM
+	PAD_NC(GPP_C7, NONE), // SMD_CPU_THERM
+	PAD_NC(GPP_C8, NONE),
+	PAD_CFG_GPI(GPP_C9, NONE, DEEP), // CNVI_DET# on 1650, NC on 1660TI
+	PAD_NC(GPP_C10, NONE),
+	PAD_NC(GPP_C11, NONE),
+	PAD_NC(GPP_C12, NONE),
+	PAD_NC(GPP_C13, NONE),
+	PAD_NC(GPP_C14, NONE),
+	PAD_NC(GPP_C15, NONE),
+	PAD_CFG_NF(GPP_C16, NONE, PLTRST, NF1), // I2C_SDA_TP
+	PAD_CFG_NF(GPP_C17, NONE, PLTRST, NF1), // I2C_SCL_TP
+	PAD_CFG_NF(GPP_C18, NONE, PLTRST, NF1), // NC on 1650, SMD_7411 on 1660TI
+	PAD_CFG_NF(GPP_C19, NONE, PLTRST, NF1), // NC on 1650, SMC_7411 on 1660TI
+	//PAD_CFG_NF(GPP_C20, NONE, DEEP, NF1), // UART2_RXD
+	//PAD_CFG_NF(GPP_C21, NONE, DEEP, NF1), // UART2_TXD
+	PAD_NC(GPP_C22, NONE),
+	PAD_NC(GPP_C23, NONE),
+
+	/* ------- GPIO Group GPP_D ------- */
+	PAD_NC(GPP_D0, NONE),
+	PAD_NC(GPP_D1, NONE),
+	PAD_NC(GPP_D2, NONE),
+	PAD_NC(GPP_D3, NONE),
+	PAD_NC(GPP_D4, NONE),
+	PAD_CFG_NF(GPP_D5, NONE, DEEP, NF3), // CNVI_RF_RST#
+	PAD_CFG_NF(GPP_D6, NONE, DEEP, NF3), // XTAL_CLKREQ
+	PAD_NC(GPP_D7, NONE),
+	PAD_NC(GPP_D8, NONE),
+	PAD_NC(GPP_D9, NONE),
+	PAD_NC(GPP_D10, NONE),
+	PAD_NC(GPP_D11, NONE),
+	PAD_NC(GPP_D12, NONE),
+	PAD_NC(GPP_D13, NONE),
+	PAD_NC(GPP_D14, NONE),
+	PAD_NC(GPP_D15, NONE),
+	PAD_NC(GPP_D16, NONE),
+	PAD_NC(GPP_D17, NONE),
+	PAD_NC(GPP_D18, NONE),
+	PAD_NC(GPP_D19, NONE),
+	PAD_NC(GPP_D20, NONE),
+	PAD_NC(GPP_D21, NONE),
+	PAD_NC(GPP_D22, NONE),
+	PAD_NC(GPP_D23, NONE),
+
+	/* ------- GPIO Group GPP_E ------- */
+	PAD_NC(GPP_E0, NONE), // SATAGP0
+	PAD_CFG_NF(GPP_E1, NONE, DEEP, NF1), // SATAGP1
+	PAD_NC(GPP_E2, NONE), // SATAGP2
+	PAD_NC(GPP_E3, NONE), // EXTTS_SNI_DRV0
+	PAD_CFG_GPI(GPP_E4, NONE, DEEP), // DEVSLP0
+	PAD_CFG_GPI(GPP_E5, NONE, DEEP), // DEVSLP1
+	PAD_NC(GPP_E6, NONE), // PCH_MUTE#
+	PAD_CFG_GPI_APIC_LOW(GPP_E7, NONE, PLTRST), // TP_ATTN#
+	PAD_CFG_NF(GPP_E8, NONE, DEEP, NF1), // SATA_LED#
+	PAD_NC(GPP_E9, NONE),
+	PAD_NC(GPP_E10, NONE),
+	PAD_NC(GPP_E11, NONE),
+	PAD_NC(GPP_E12, NONE),
+
+	/* ------- GPIO Group GPP_F ------- */
+	PAD_NC(GPP_F0, NONE), // SATAGP3
+	PAD_NC(GPP_F1, NONE),
+	PAD_NC(GPP_F2, NONE),
+	PAD_NC(GPP_F3, NONE),
+	PAD_NC(GPP_F4, NONE),
+	PAD_CFG_GPI(GPP_F5, NONE, DEEP), // KBLED_DET
+	PAD_CFG_GPI(GPP_F6, NONE, DEEP), // LIGHT_KB_DET#
+	PAD_NC(GPP_F7, NONE),
+	PAD_NC(GPP_F8, NONE),
+	PAD_NC(GPP_F9, NONE),
+	PAD_NC(GPP_F10, NONE), // BIOS_REC - BIOS RECOVERY ENABLE strap
+	PAD_NC(GPP_F11, NONE), // PCH_RSVD - unused strap
+	PAD_NC(GPP_F12, NONE), // MFG_MODE - Manufacturing mode strap
+	PAD_NC(GPP_F13, NONE), // GP39_GFX_CRB_DETECT - 0 = normal gfx, 1 = customer gfx
+	PAD_CFG_GPI(GPP_F14, NONE, DEEP), // H_SKTOCC_N
+	PAD_NC(GPP_F15, NONE),
+	PAD_NC(GPP_F16, NONE),
+	PAD_NC(GPP_F17, NONE),
+	PAD_NC(GPP_F18, NONE),
+	//PAD_CFG_NF(GPP_F19, NONE, DEEP, NF1), // NB_ENAVDD
+	PAD_CFG_NF(GPP_F20, NONE, DEEP, NF1), // BLON
+	PAD_CFG_NF(GPP_F21, NONE, DEEP, NF1), // EDP_BRIGHTNESS
+	//PAD_CFG_GPO(GPP_F22, 0, DEEP), // DGPU_RST#_PCH
+	//PAD_CFG_GPO(GPP_F23, 0, DEEP), // DGPU_PWR_EN
+
+	/* ------- GPIO Group GPP_G ------- */
+	PAD_CFG_GPI(GPP_G0, NONE, DEEP), // BOARD_ID1
+	PAD_CFG_GPI(GPP_G1, NONE, DEEP), // BOARD_ID2
+	PAD_CFG_GPI(GPP_G2, NONE, DEEP), // TPM_DET
+	PAD_CFG_GPI(GPP_G3, UP_20K, DEEP), // TODO: GPIO4_1V8_MAIN_EN_R
+	PAD_NC(GPP_G4, NONE),
+	PAD_NC(GPP_G5, NONE),
+	PAD_NC(GPP_G6, NONE),
+	PAD_NC(GPP_G7, NONE),
+
+	/* ------- GPIO Group GPP_H ------- */
+	PAD_CFG_NF(GPP_H0, NONE, DEEP, NF1), // WLAN_CLKREQ#
+	PAD_NC(GPP_H1, NONE),
+	PAD_CFG_NF(GPP_H2, NONE, DEEP, NF1), // PEG_CLKREQ#
+	PAD_NC(GPP_H3, NONE),
+	PAD_CFG_NF(GPP_H4, NONE, DEEP, NF1), // SSD_CLKREQ#
+	PAD_CFG_NF(GPP_H5, NONE, DEEP, NF1), // SSD2_CLKREQ#
+	PAD_NC(GPP_H6, NONE),
+	PAD_NC(GPP_H7, NONE),
+	PAD_NC(GPP_H8, NONE),
+	PAD_NC(GPP_H9, NONE),
+	PAD_NC(GPP_H10, NONE),
+	PAD_NC(GPP_H11, NONE),
+	PAD_CFG_GPI(GPP_H12, NONE, DEEP), // ESPI FLASH SHARING MODE strap
+	PAD_NC(GPP_H13, NONE),
+	PAD_NC(GPP_H14, NONE),
+	PAD_NC(GPP_H15, NONE),
+	PAD_NC(GPP_H16, NONE),
+	PAD_NC(GPP_H17, NONE),
+	PAD_NC(GPP_H18, NONE),
+	PAD_NC(GPP_H19, NONE),
+	PAD_NC(GPP_H20, NONE),
+	PAD_NC(GPP_H21, NONE),
+	PAD_NC(GPP_H22, NONE),
+	PAD_NC(GPP_H23, NONE), // DGPU_SELECT#
+
+	/* ------- GPIO Group GPP_I ------- */
+	PAD_CFG_NF(GPP_I0, NONE, DEEP, NF1), // NC on 1650, I_MDP_HPD on 1660TI
+	PAD_CFG_NF(GPP_I1, NONE, DEEP, NF1), // HDMI_HPD
+	PAD_CFG_NF(GPP_I2, NONE, DEEP, NF1),
+	_PAD_CFG_STRUCT(GPP_I3, 0x46880100, 0x0000), // MDP_E_HPD
+	PAD_CFG_NF(GPP_I4, NONE, DEEP, NF1), // EDP_HPD
+	PAD_CFG_NF(GPP_I5, NONE, DEEP, NF1), // NC on 1650, I_MDP_CLK on 1660TI
+	PAD_CFG_NF(GPP_I6, NONE, DEEP, NF1), // NC on 1650, I_MDP_DATA on 1660TI
+	PAD_CFG_NF(GPP_I7, NONE, DEEP, NF1), // HDMI_CTRLCLK on 1650, NC on 1660TI
+	PAD_CFG_NF(GPP_I8, NONE, DEEP, NF1), // HDMI_CTRLDATA on 1650, NC on 1660TI
+	PAD_NC(GPP_I9, NONE),
+	PAD_NC(GPP_I10, NONE),
+	PAD_CFG_GPI(GPP_I11, NONE, DEEP), // H_SKTOCC_N
+	PAD_NC(GPP_I12, NONE),
+	PAD_NC(GPP_I13, NONE),
+	PAD_NC(GPP_I14, NONE),
+
+	/* ------- GPIO Group GPP_J ------- */
+	PAD_CFG_NF(GPP_J0, NONE, DEEP, NF1), // CNVI_GNSS_PA_BLANKING
+	PAD_NC(GPP_J1, NONE),
+	PAD_NC(GPP_J2, NONE),
+	PAD_NC(GPP_J3, NONE),
+	PAD_CFG_NF(GPP_J4, NONE, DEEP, NF1), // CNVI_BRI_DT
+	PAD_CFG_NF(GPP_J5, NONE, DEEP, NF1), // CNVI_BRI_RSP
+	PAD_CFG_NF(GPP_J6, NONE, DEEP, NF1), // CNVI_RGI_DT
+	PAD_CFG_NF(GPP_J7, NONE, DEEP, NF1), // CNVI_RGI_RSP
+	PAD_CFG_NF(GPP_J8, NONE, DEEP, NF1), // CNVI_MFUART2_RXD
+	PAD_CFG_NF(GPP_J9, NONE, DEEP, NF1), // CNVI_MFUART2_TXD
+	PAD_NC(GPP_J10, NONE),
+	PAD_NC(GPP_J11, NONE),
+
+	/* ------- GPIO Group GPP_K ------- */
+	PAD_NC(GPP_K0, NONE),
+	PAD_NC(GPP_K1, NONE),
+	PAD_NC(GPP_K2, NONE),
+	PAD_CFG_GPI_SCI_LOW(GPP_K3, NONE, PLTRST, LEVEL), // XXX: SCI#
+	PAD_NC(GPP_K4, NONE),
+	PAD_NC(GPP_K5, NONE),
+	PAD_CFG_GPI_SCI_LOW(GPP_K6, NONE, DEEP, LEVEL), // XXX: SWI#
+	PAD_NC(GPP_K7, NONE),
+	PAD_CFG_GPO(GPP_K8, 1, DEEP), // SATA_M2_PWR_EN1
+	PAD_CFG_GPO(GPP_K9, 1, DEEP), // SATA_M2_PWR_EN2
+	PAD_NC(GPP_K10, NONE),
+	PAD_NC(GPP_K11, NONE),
+	PAD_NC(GPP_K12, NONE),
+	PAD_NC(GPP_K13, NONE),
+	PAD_NC(GPP_K14, NONE), // GPP_K_14_GSXDIN / GPP_K14_TEST_R
+	PAD_NC(GPP_K15, NONE),
+	PAD_NC(GPP_K16, NONE),
+	PAD_NC(GPP_K17, NONE),
+	PAD_NC(GPP_K18, NONE),
+	PAD_CFG_GPI(GPP_K19, NONE, DEEP), // XXX: SMI#
+	PAD_CFG_GPI(GPP_K20, NONE, DEEP), // GPU_EVENT#
+	PAD_CFG_GPI(GPP_K21, NONE, DEEP), // GC6_FB_EN_PCH
+	PAD_CFG_GPI(GPP_K22, NONE, DEEP), // DGPU_PWRGD_R
+	PAD_NC(GPP_K23, NONE), // DGPU_PRSNT#
+};
+
+void variant_configure_gpios(void)
+{
+	gpio_configure_pads(gpio_table, ARRAY_SIZE(gpio_table));
+}
diff --git a/src/mainboard/system76/gaze15/variants/gaze14/gpio_early.c b/src/mainboard/system76/gaze15/variants/gaze14/gpio_early.c
new file mode 100644
index 0000000000..38b1bc4374
--- /dev/null
+++ b/src/mainboard/system76/gaze15/variants/gaze14/gpio_early.c
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <soc/gpio.h>
+#include <variant/gpio.h>
+
+static const struct pad_config early_gpio_table[] = {
+	PAD_CFG_NF(GPP_C20, NONE, DEEP, NF1), // UART2_RXD
+	PAD_CFG_NF(GPP_C21, NONE, DEEP, NF1), // UART2_TXD
+	PAD_CFG_NF(GPP_F19, NONE, DEEP, NF1), // NB_ENAVDD
+	PAD_CFG_GPO(GPP_F22, 0, DEEP), // DGPU_RST#_PCH
+	PAD_CFG_GPO(GPP_F23, 0, DEEP), // DGPU_PWR_EN
+};
+
+void variant_configure_early_gpios(void)
+{
+	gpio_configure_pads(early_gpio_table, ARRAY_SIZE(early_gpio_table));
+}
diff --git a/src/mainboard/system76/gaze15/variants/gaze14/hda_verb.c b/src/mainboard/system76/gaze15/variants/gaze14/hda_verb.c
new file mode 100644
index 0000000000..367d647280
--- /dev/null
+++ b/src/mainboard/system76/gaze15/variants/gaze14/hda_verb.c
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <device/azalia_device.h>
+
+const u32 cim_verb_data[] = {
+	/* Realtek, ALC269VC */
+	0x10ec0269, /* Vendor ID */
+	0x15588560, /* Subsystem ID */
+	11, /* Number of entries */
+	AZALIA_SUBVENDOR(0, 0x15588560),
+	AZALIA_PIN_CFG(0, 0x12, 0x90a60140),
+	AZALIA_PIN_CFG(0, 0x14, 0x90170110),
+	AZALIA_PIN_CFG(0, 0x15, 0x02211020),
+	AZALIA_PIN_CFG(0, 0x17, 0x40000000),
+	AZALIA_PIN_CFG(0, 0x18, 0x02a11030),
+	AZALIA_PIN_CFG(0, 0x19, 0x02a1103f),
+	AZALIA_PIN_CFG(0, 0x1a, 0x411111f0),
+	AZALIA_PIN_CFG(0, 0x1b, 0x411111f0),
+	AZALIA_PIN_CFG(0, 0x1d, 0x40f00001),
+	AZALIA_PIN_CFG(0, 0x1e, 0x411111f0),
+};
+
+const u32 pc_beep_verbs[] = {};
+
+AZALIA_ARRAY_SIZES;
diff --git a/src/mainboard/system76/gaze15/variants/gaze14/overridetree.cb b/src/mainboard/system76/gaze15/variants/gaze14/overridetree.cb
new file mode 100644
index 0000000000..e2e4d11ef9
--- /dev/null
+++ b/src/mainboard/system76/gaze15/variants/gaze14/overridetree.cb
@@ -0,0 +1,23 @@
+chip soc/intel/cannonlake
+	# Serial I/O
+	register "SerialIoDevMode" = "{
+		[PchSerialIoIndexI2C0] = PchSerialIoPci, // Touchpad I2C bus
+		[PchSerialIoIndexI2C1] = PchSerialIoPci, // USB-C
+		[PchSerialIoIndexUART2] = PchSerialIoPci, // Debug console
+	}"
+
+	device domain 0 on
+		subsystemid 0x1558 0x8550 inherit
+
+		device pci 15.0 on      # I2C0
+			chip drivers/i2c/hid
+				register "generic.hid" = ""PNP0C50""
+				register "generic.desc" = ""Synaptics Touchpad""
+				register "generic.irq" = "ACPI_IRQ_EDGE_LOW(GPP_E7_IRQ)"
+				register "generic.probed" = "1"
+				register "hid_desc_reg_offset" = "0x20"
+				device i2c 2c on end
+			end
+		end
+	end
+end