volteer: Create volteer2 variant

Create the volteer2 variant of the volteer reference board by
copying the template files to a new directory named for the variant.

(Auto-Generated by create_coreboot_variant.sh version 4.1.1).

Modified to alphabetize and update to duplicate latest volteer changes
currently in the review and merge pipeline.

Added the following missing files from the variants/volteer2/ folder:
 - gpio.c
 - include/variant/acpi/dptf.asl
 - acpi/mipi_camera.asl
 - Makefile.inc
 - memory/dram_id.generated.txt
 - memory/Makefile.inc
 - memory/mem_list_variant.txt
 - overridetree.cb

BUG=b:159135047
BRANCH=None
TEST=util/abuild/abuild -p none -t google/volteer -x -a
make sure the build includes GOOGLE_VOLTEER2

Change-Id: I987c72b83dc993af248a753a2caa56be0f26c1ad
Signed-off-by: Nick Vaccaro <nvaccaro@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42605
Reviewed-by: Caveh Jalali <caveh@chromium.org>
Reviewed-by: Wonkyu Kim <wonkyu.kim@intel.com>
Reviewed-by: YH Lin <yueherngl@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

12 files changed, 483 insertions, 0 deletions

diff --git a/src/mainboard/google/volteer/Kconfig b/src/mainboard/google/volteer/Kconfig
index e3f59a051a..0b0e63b411 100644
--- a/src/mainboard/google/volteer/Kconfig
+++ b/src/mainboard/google/volteer/Kconfig
@@ -72,6 +72,7 @@ config MAINBOARD_PART_NUMBER
 	default "Terrador" if BOARD_GOOGLE_TERRADOR
 	default "Trondo" if BOARD_GOOGLE_TRONDO
 	default "Volteer" if BOARD_GOOGLE_VOLTEER
+	default "Volteer2" if BOARD_GOOGLE_VOLTEER2
 	default "Voxel" if BOARD_GOOGLE_VOXEL
 	default "Delbin" if BOARD_GOOGLE_DELBIN
 
@@ -105,6 +106,7 @@ config VARIANT_DIR
 	default "terrador" if BOARD_GOOGLE_TERRADOR
 	default "trondo" if BOARD_GOOGLE_TRONDO
 	default "volteer" if BOARD_GOOGLE_VOLTEER
+	default "volteer2" if BOARD_GOOGLE_VOLTEER2
 	default "voxel" if BOARD_GOOGLE_VOXEL
 	default "delbin" if BOARD_GOOGLE_DELBIN
 
diff --git a/src/mainboard/google/volteer/Kconfig.name b/src/mainboard/google/volteer/Kconfig.name
index 1859631d8a..ccd104d186 100644
--- a/src/mainboard/google/volteer/Kconfig.name
+++ b/src/mainboard/google/volteer/Kconfig.name
@@ -27,6 +27,11 @@ config BOARD_GOOGLE_VOLTEER
 	select BOARD_GOOGLE_BASEBOARD_VOLTEER
 	select VARIANT_HAS_MIPI_CAMERA
 
+config BOARD_GOOGLE_VOLTEER2
+	bool "-> Volteer2"
+	select BOARD_GOOGLE_BASEBOARD_VOLTEER
+	select VARIANT_HAS_MIPI_CAMERA
+
 config BOARD_GOOGLE_VOXEL
 	bool "-> Voxel"
 	select BOARD_GOOGLE_BASEBOARD_VOLTEER
diff --git a/src/mainboard/google/volteer/variants/volteer2/Makefile.inc b/src/mainboard/google/volteer/variants/volteer2/Makefile.inc
new file mode 100644
index 0000000000..13269db5ec
--- /dev/null
+++ b/src/mainboard/google/volteer/variants/volteer2/Makefile.inc
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+bootblock-y += gpio.c
+
+ramstage-y += gpio.c
diff --git a/src/mainboard/google/volteer/variants/volteer2/gpio.c b/src/mainboard/google/volteer/variants/volteer2/gpio.c
new file mode 100644
index 0000000000..2b99e52029
--- /dev/null
+++ b/src/mainboard/google/volteer/variants/volteer2/gpio.c
@@ -0,0 +1,258 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/gpio.h>
+#include <baseboard/variants.h>
+#include <commonlib/helpers.h>
+
+/* Pad configuration in ramstage */
+static const struct pad_config override_gpio_table[] = {
+	/* A7  : I2S2_SCLK ==> EN_PP3300_TRACKPAD */
+	PAD_CFG_GPO(GPP_A7, 1, DEEP),
+	/* A8  : I2S2_SFRM ==> EN_PP3300_TOUCHSCREEN */
+	PAD_CFG_GPO(GPP_A8, 0, DEEP),
+	/* A10 : I2S2_RXD ==> EN_SPKR_PA */
+	PAD_CFG_GPO(GPP_A10, 1, DEEP),
+	/* A13 : PMC_I2C_SCL ==> BT_DISABLE_L */
+	PAD_CFG_GPO(GPP_A13, 1, DEEP),
+	/* A16 : USB_OC3# ==> USB_C0_OC_ODL */
+	PAD_CFG_NF(GPP_A16, NONE, DEEP, NF1),
+	/* A18 : DDSP_HPDB ==> HDMI_HPD */
+	PAD_CFG_NF(GPP_A18, NONE, DEEP, NF1),
+	/* A19 : DDSP_HPD1 ==> USB_C0_DP_HPD */
+	PAD_CFG_NF(GPP_A19, NONE, DEEP, NF1),
+	/* A20 : DDSP_HPD2 ==> USB_C1_DP_HPD */
+	PAD_CFG_NF(GPP_A20, NONE, DEEP, NF1),
+	/* A21 : DDPC_CTRCLK ==> EN_FP_PWR */
+	PAD_CFG_GPO(GPP_A21, 1, DEEP),
+	/* A22 : DDPC_CTRLDATA ==> EN_HDMI_PWR */
+	PAD_CFG_GPO(GPP_A22, 1, DEEP),
+	/* A23 : I2S1_SCLK ==> I2S1_SPKR_SCLK */
+	PAD_CFG_NF(GPP_A23, NONE, DEEP, NF1),
+
+	/* B3  : CPU_GP2 ==> PEN_DET_ODL */
+	PAD_CFG_GPI(GPP_B3, NONE, DEEP),
+	/* B5  : ISH_I2C0_CVF_SDA */
+	PAD_CFG_NF(GPP_B5, NONE, DEEP, NF1),
+	/* B6  : ISH_I2C0_CVF_SCL */
+	PAD_CFG_NF(GPP_B6, NONE, DEEP, NF1),
+	/* B7  : ISH_12C1_SDA ==> ISH_I2C0_SENSOR_SDA */
+	PAD_CFG_NF(GPP_B7, NONE, DEEP, NF1),
+	/* B8  : ISH_I2C1_SCL ==> ISH_I2C0_SENSOR_SCL */
+	PAD_CFG_NF(GPP_B8, NONE, DEEP, NF1),
+	/* B9  : I2C5_SDA ==> PCH_I2C5_TRACKPAD_SDA */
+	PAD_CFG_NF(GPP_B9, NONE, DEEP, NF1),
+	/* B10 : I2C5_SCL ==> PCH_I2C5_TRACKPAD_SCL */
+	PAD_CFG_NF(GPP_B10, NONE, DEEP, NF1),
+	/* B19 : GSPI1_CS0# ==> PCH_GSPI1_FPMCU_CS_L */
+	PAD_CFG_NF(GPP_B19, NONE, DEEP, NF1),
+	/* B20 : GSPI1_CLK ==> PCH_GSPI1_FPMCU_CLK */
+	PAD_CFG_NF(GPP_B20, NONE, DEEP, NF1),
+	/* B21 : GSPI1_MISO ==> PCH_GSPI1_FPMCU_MISO */
+	PAD_CFG_NF(GPP_B21, NONE, DEEP, NF1),
+
+	/* C0  : SMBCLK ==> EN_PP3300_WLAN */
+	PAD_CFG_GPO(GPP_C0, 1, DEEP),
+	/* C7  : SML1DATA ==> EN_USI_CHARGE */
+	PAD_CFG_GPO(GPP_C7, 1, DEEP),
+	/* C10 : UART0_RTS# ==> USI_RST_L */
+	PAD_CFG_GPO(GPP_C10, 0, DEEP),
+	/* C13 : UART1_TXD ==> EN_PP5000_TRACKPAD */
+	PAD_CFG_GPO(GPP_C13, 1, DEEP),
+	/* C16 : I2C0_SDA ==> PCH_I2C0_1V8_AUDIO_SDA */
+	PAD_CFG_NF(GPP_C16, NONE, DEEP, NF1),
+	/* C17 : I2C0_SCL ==> PCH_I2C0_1V8_AUDIO_SCL */
+	PAD_CFG_NF(GPP_C17, NONE, DEEP, NF1),
+	/* C18 : I2C1_SDA ==> PCH_I2C1_TOUCH_USI_SDA */
+	PAD_CFG_NF(GPP_C18, NONE, DEEP, NF1),
+	/* C19 : I2C1_SCL ==> PCH_I2C1_TOUCH_USI_SCL */
+	PAD_CFG_NF(GPP_C19, NONE, DEEP, NF1),
+	/* C20 : UART2_RXD ==> FPMCU_INT_L */
+	/* APIC interrupt conflict, so used GPI_INT; see b/147500717 */
+	PAD_CFG_GPI_INT(GPP_C20, NONE, PLTRST, LEVEL),
+	/* C22 : UART2_RTS# ==> PCH_FPMCU_BOOT0 */
+	PAD_CFG_GPO(GPP_C22, 0, DEEP),
+	/* C23 : UART2_CTS# ==> FPMCU_RST_ODL */
+	PAD_CFG_GPO(GPP_C23, 1, DEEP),
+
+	/* D1  : ISH_GP1 ==> ISH_ACCEL_INT_L */
+	PAD_CFG_GPI(GPP_D1, NONE, DEEP),
+	/* D2  : ISH_GP2 ==> ISH_LID_OPEN */
+	PAD_CFG_GPI(GPP_D2, NONE, DEEP),
+	/* D3  : ISH_GP3 ==> ISH_ALS_RGB_INT_L */
+	PAD_CFG_GPI(GPP_D3, NONE, DEEP),
+	/* D4  : IMGCLKOUT0 ==> FCAM_RST_L */
+	PAD_CFG_GPO(GPP_D4, 0, PLTRST),
+	/* D6  : SRCCLKREQ1# ==> WLAN_CLKREQ_ODL */
+	PAD_CFG_NF(GPP_D6, NONE, DEEP, NF1),
+	/* D8  : SRCCLKREQ3# ==> SD_CLKREQ_ODL */
+	PAD_CFG_NF(GPP_D8, NONE, DEEP, NF1),
+	/* D13 : ISH_UART0_RXD ==> UART_ISH_RX_DEBUG_TX */
+	PAD_CFG_NF(GPP_D13, NONE, DEEP, NF1),
+	/* D14 : ISH_UART0_TXD ==> UART_ISH_TX_DEBUG_RX */
+	PAD_CFG_NF(GPP_D14, NONE, DEEP, NF1),
+	/* D16 : ISH_UART0_CTS# ==> EN_PP3300_SD */
+	PAD_CFG_GPO(GPP_D16, 1, DEEP),
+	/* D17 : ISH_GP4 ==> EN_FCAM_PWR */
+	PAD_CFG_GPO(GPP_D17, 1, DEEP),
+	/* D18 : ISH_GP5 ==> FCAM_SNRPWR_EN */
+	PAD_CFG_GPO(GPP_D18, 1, DEEP),
+
+	/* E1  : SPI1_IO2 ==> PEN_DET_ODL */
+	PAD_CFG_GPI_SCI_LOW(GPP_E1, NONE, DEEP, EDGE_SINGLE),
+	/* E2  : SPI1_IO3 ==> WLAN_PCIE_WAKE_ODL */
+	PAD_CFG_GPI(GPP_E2, NONE, DEEP),
+	/* E3  : CPU_GP0 ==> USI_REPORT_EN */
+	PAD_CFG_GPO(GPP_E3, 1, DEEP),
+	/* E7  : CPU_GP1 ==> USI_INT */
+	PAD_CFG_GPI_APIC(GPP_E7, NONE, PLTRST, LEVEL, NONE),
+	/* E8  : SPI1_CS1# ==> SLP_S0IX */
+	PAD_CFG_GPO(GPP_E8, 0, DEEP),
+	/* E11 : SPI1_CLK ==> SD_PE_WAKE_ODL */
+	PAD_CFG_GPI(GPP_E11, NONE, DEEP),
+	/* E15 : ISH_GP6 ==> TRACKPAD_INT_ODL */
+	PAD_CFG_GPI_IRQ_WAKE(GPP_E15, NONE, DEEP, LEVEL, INVERT),
+	/* E16 : ISH_GP7 ==> WWAN_SIM1_DET_OD */
+	PAD_CFG_GPI(GPP_E16, NONE, DEEP),
+	/* E17 : THC0_SPI1_INT# ==> WWAN_PERST_L */
+	PAD_CFG_GPO(GPP_E17, 1, DEEP),
+
+	/* F6  : CNV_PA_BLANKING ==> WWAN_WLAN_COEX3 */
+	PAD_CFG_NF(GPP_F6, NONE, DEEP, NF1),
+	/* F8  : I2S_MCLK2_INOUT ==> HP_INT_L */
+	PAD_CFG_GPI_INT(GPP_F8, NONE, PLTRST, EDGE_BOTH),
+	/* F12 : GSXDOUT ==> WWAN_RST_ODL */
+	PAD_CFG_GPI(GPP_F12, NONE, DEEP),
+	/* F13 : GSXDOUT ==> WiFi_DISABLE_L */
+	PAD_CFG_GPO(GPP_F13, 1, DEEP),
+	/* F14 : GSXDIN ==> SAR0_INT_L */
+	PAD_CFG_GPI_SCI_LOW(GPP_F14, NONE, PLTRST, EDGE_SINGLE),
+	/* F15 : GSXSRESET# ==> RCAM_RST_L */
+	PAD_CFG_GPO(GPP_F15, 1, DEEP),
+	/* F16 : GSXCLK ==> WWAN_DPR_SAR_ODL */
+	PAD_CFG_GPO(GPP_F16, 1, DEEP),
+	/* F17 : WWAN_RF_DISABLE_ODL */
+	PAD_CFG_GPO(GPP_F17, 1, DEEP),
+	/* F18 : THC1_SPI2_INT# ==> WWAN_PCIE_WAKE_ODL */
+	PAD_CFG_GPI_SCI_LOW(GPP_F18, NONE, DEEP, EDGE_SINGLE),
+	/* F19 : SRCCLKREQ6# ==> WLAN_INT_L */
+	PAD_CFG_GPI_SCI_LOW(GPP_F19, NONE, DEEP, EDGE_SINGLE),
+
+	/* H3  : SX_EXIT_HOLDOFF# ==> SD_PERST_L */
+	PAD_CFG_GPO(GPP_H3, 1, DEEP),
+	/* H6  : I2C3_SDA ==> PCH_I2C3_CAM_SDA */
+	PAD_CFG_NF(GPP_H6, NONE, DEEP, NF1),
+	/* H7  : I2C3_SCL ==> PCH_I2C3_CAM_SCL */
+	PAD_CFG_NF(GPP_H7, NONE, DEEP, NF1),
+	/* H8  : I2C4_SDA ==> WWAN_WLAN_COEX1 */
+	PAD_CFG_NF(GPP_H8, NONE, DEEP, NF2),
+	/* H9  : I2C4_SCL ==> WWAN_WLAN_COEX2 */
+	PAD_CFG_NF(GPP_H9, NONE, DEEP, NF2),
+	/* H11 : SRCCLKREQ5# ==> WLAN_PERST_L */
+	PAD_CFG_GPO(GPP_H11, 1, DEEP),
+	/* H12 : M2_SKT2_CFG0 ==> WWAN_CONFIG0 */
+	PAD_CFG_GPI(GPP_H12, NONE, DEEP),
+	/* H13 : M2_SKT2_CFG1 # ==> WWAN_CONFIG1 */
+	PAD_CFG_GPI(GPP_H13, NONE, DEEP),
+	/* H14 : M2_SKT2_CFG2 # ==> RCAM_SNRPWR_EN */
+	PAD_CFG_GPO(GPP_H14, 1, DEEP),
+	/* H15 : M2_SKT2_CFG3 # ==> WWAN_CONFIG3 */
+	PAD_CFG_GPI(GPP_H15, NONE, DEEP),
+	/* H16 : DDPB_CTRLCLK ==> DDPB_HDMI_CTRLCLK */
+	PAD_CFG_NF(GPP_H16, NONE, DEEP, NF1),
+	/* H17 : DDPB_CTRLDATA ==> DDPB_HDMI_CTRLDATA */
+	PAD_CFG_NF(GPP_H17, NONE, DEEP, NF1),
+	/* H19 : TIME_SYNC0 ==> USER_PRES_FP_ODL */
+	PAD_CFG_GPI(GPP_H19, NONE, DEEP),
+	/* H20 : IMGCLKOUT1 ==> EN_MIPI_RCAM_PWR */
+	PAD_CFG_GPO(GPP_H20, 1, DEEP),
+	/* H21 : IMGCLKOUT2 ==> CAM_MCLK1 */
+	PAD_CFG_NF(GPP_H21, NONE, DEEP, NF1),
+	/* H22 : IMGCLKOUT3 ==> CAM_MCLK0 */
+	PAD_CFG_NF(GPP_H22, NONE, DEEP, NF1),
+
+	/* R0 : HDA_BCLK ==> I2S0_HP_SCLK */
+	PAD_CFG_NF(GPP_R0, NONE, DEEP, NF2),
+	/* R1 : HDA_SYNC ==> I2S0_HP_SFRM */
+	PAD_CFG_NF(GPP_R1, NONE, DEEP, NF2),
+	/* R2 : HDA_SDO ==> I2S0_PCH_TX_HP_RX_STRAP */
+	PAD_CFG_NF(GPP_R2, DN_20K, DEEP, NF2),
+	/* R3 : HDA_SDIO ==> I2S0_PCH_RX_HP_TX */
+	PAD_CFG_NF(GPP_R3, NONE, DEEP, NF2),
+	/* R5 : HDA_SDI1 ==> I2S1_PCH_RX_SPKR_TX */
+	PAD_CFG_NF(GPP_R5, NONE, DEEP, NF2),
+	/* R6 : I2S1_TXD ==> I2S1_PCH_RX_SPKR_RX */
+	PAD_CFG_NF(GPP_R6, NONE, DEEP, NF2),
+	/* R7 : I2S1_SFRM ==> I2S1_SPKR_SFRM */
+	PAD_CFG_NF(GPP_R7, NONE, DEEP, NF2),
+
+	/* S0 : SNDW0_CLK ==> SNDW0_HP_CLK */
+	PAD_CFG_NF(GPP_S0, NONE, DEEP, NF1),
+	/* S1 : SNDW0_DATA ==> SNDW0_HP_DATA */
+	PAD_CFG_NF(GPP_S1, NONE, DEEP, NF1),
+	/* S2 : SNDW1_CLK ==> SNDW1_SPKR_CLK */
+	PAD_CFG_NF(GPP_S2, NONE, DEEP, NF1),
+	/* S3 : SNDW1_DATA ==> SNDW1_SPKR_DATA */
+	PAD_CFG_NF(GPP_S3, NONE, DEEP, NF1),
+	/* S4 : SNDW2_CLK ==> DMIC_CLK1 */
+	PAD_CFG_NF(GPP_S4, NONE, DEEP, NF2),
+	/* S5 : SNDW2_DATA ==> DMIC_DATA1 */
+	PAD_CFG_NF(GPP_S5, NONE, DEEP, NF2),
+	/* S6 : SNDW3_CLK ==> DMIC_CLK0 */
+	PAD_CFG_NF(GPP_S6, NONE, DEEP, NF2),
+	/* S7 : SNDW3_DATA ==> DMIC_DATA0 */
+	PAD_CFG_NF(GPP_S7, NONE, DEEP, NF2),
+
+	/* GPD9: SLP_WLAN# ==> SLP_WLAN_L */
+	PAD_CFG_NF(GPD9, NONE, DEEP, NF1),
+};
+
+/* Early pad configuration in bootblock */
+static const struct pad_config early_gpio_table[] = {
+	/* A12 : SATAXPCIE1 ==> M2_SSD_PEDET */
+	PAD_CFG_NF(GPP_A12, NONE, DEEP, NF1),
+	/* A17 : DDSP_HPDC ==> MEM_CH_SEL */
+	PAD_CFG_GPI(GPP_A17, NONE, DEEP),
+
+	/* B11 : PMCALERT# ==> PCH_WP_OD */
+	PAD_CFG_GPI_GPIO_DRIVER(GPP_B11, NONE, DEEP),
+	/* B15 : GSPI0_CS0# ==> PCH_GSPI0_H1_TPM_CS_L */
+	PAD_CFG_NF(GPP_B15, NONE, DEEP, NF1),
+	/* B16 : GSPI0_CLK ==> PCH_GSPI0_H1_TPM_CLK */
+	PAD_CFG_NF(GPP_B16, NONE, DEEP, NF1),
+	/* B17 : GSPI0_MISO ==> PCH_GSPIO_H1_TPM_MISO */
+	PAD_CFG_NF(GPP_B17, NONE, DEEP, NF1),
+	/* B18 : GSPI0_MOSI ==> PCH_GSPI0_H1_TPM_MOSI_STRAP */
+	PAD_CFG_NF(GPP_B18, NONE, DEEP, NF1),
+
+	/* C0  : SMBCLK ==> EN_PP3300_WLAN */
+	PAD_CFG_GPO(GPP_C0, 1, DEEP),
+	/* C21 : UART2_TXD ==> H1_PCH_INT_ODL */
+	PAD_CFG_GPI_APIC(GPP_C21, NONE, PLTRST, LEVEL, INVERT),
+	/* C22 : UART2_RTS# ==> PCH_FPMCU_BOOT0 */
+	PAD_CFG_GPO(GPP_C22, 0, DEEP),
+
+	/* E12 : SPI1_MISO_IO1 ==> EN_PP3300_SSD */
+	PAD_CFG_GPO(GPP_E12, 1, DEEP),
+
+	/* F11 : THC1_SPI2_CLK ==> EN_PP3300_WWAN */
+	PAD_CFG_GPO(GPP_F11, 1, DEEP),
+	/* F12 : GSXDOUT ==> WWAN_RST_ODL
+	   To meet timing constrains - drive reset low.
+	   Deasserted in ramstage. */
+	PAD_CFG_GPO(GPP_F12, 0, DEEP),
+
+	/* H11 : SRCCLKREQ5# ==> WLAN_PERST_L */
+	PAD_CFG_GPO(GPP_H11, 1, DEEP),
+};
+
+const struct pad_config *variant_override_gpio_table(size_t *num)
+{
+	*num = ARRAY_SIZE(override_gpio_table);
+	return override_gpio_table;
+}
+
+const struct pad_config *variant_early_gpio_table(size_t *num)
+{
+	*num = ARRAY_SIZE(early_gpio_table);
+	return early_gpio_table;
+}
diff --git a/src/mainboard/google/volteer/variants/volteer2/include/variant/acpi/dptf.asl b/src/mainboard/google/volteer/variants/volteer2/include/variant/acpi/dptf.asl
new file mode 100644
index 0000000000..189cafea4c
--- /dev/null
+++ b/src/mainboard/google/volteer/variants/volteer2/include/variant/acpi/dptf.asl
@@ -0,0 +1,3 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/acpi/dptf.asl>
diff --git a/src/mainboard/google/volteer/variants/volteer2/include/variant/acpi/mipi_camera.asl b/src/mainboard/google/volteer/variants/volteer2/include/variant/acpi/mipi_camera.asl
new file mode 100644
index 0000000000..418f2e04ba
--- /dev/null
+++ b/src/mainboard/google/volteer/variants/volteer2/include/variant/acpi/mipi_camera.asl
@@ -0,0 +1,3 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <baseboard/acpi/mipi_camera.asl>
diff --git a/src/mainboard/google/volteer/variants/volteer2/include/variant/ec.h b/src/mainboard/google/volteer/variants/volteer2/include/variant/ec.h
new file mode 100644
index 0000000000..7a2a6ff8b7
--- /dev/null
+++ b/src/mainboard/google/volteer/variants/volteer2/include/variant/ec.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef __VARIANT_EC_H__
+#define __VARIANT_EC_H__
+
+#include <baseboard/ec.h>
+
+#endif
diff --git a/src/mainboard/google/volteer/variants/volteer2/include/variant/gpio.h b/src/mainboard/google/volteer/variants/volteer2/include/variant/gpio.h
new file mode 100644
index 0000000000..b5fa8c5485
--- /dev/null
+++ b/src/mainboard/google/volteer/variants/volteer2/include/variant/gpio.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef VARIANT_GPIO_H
+#define VARIANT_GPIO_H
+
+#include <baseboard/gpio.h>
+
+/* Memory configuration board straps */
+/* Copied from baseboard and may need to change for the new variant. */
+#define GPIO_MEM_CONFIG_0	GPP_C12
+#define GPIO_MEM_CONFIG_1	GPP_C15
+#define GPIO_MEM_CONFIG_2	GPP_C14
+#define GPIO_MEM_CONFIG_3	GPP_D15
+
+#endif
diff --git a/src/mainboard/google/volteer/variants/volteer2/memory/Makefile.inc b/src/mainboard/google/volteer/variants/volteer2/memory/Makefile.inc
new file mode 100644
index 0000000000..c2abb9ef0d
--- /dev/null
+++ b/src/mainboard/google/volteer/variants/volteer2/memory/Makefile.inc
@@ -0,0 +1,8 @@
+## SPDX-License-Identifier: GPL-2.0-or-later
+## This is an auto-generated file. Do not edit!!
+
+SPD_SOURCES =
+SPD_SOURCES += spd-1.hex      # ID = 0(0b0000)  Parts = K4U6E3S4AA-MGCL, H9HCNNNBKMMLXR-NEE
+SPD_SOURCES += spd-3.hex      # ID = 1(0b0001)  Parts = K4UBE3D4AA-MGCL
+SPD_SOURCES += spd-4.hex      # ID = 2(0b0010)  Parts = MT53E1G32D2NP-046 WT:A
+SPD_SOURCES += spd-2.hex      # ID = 3(0b0011)  Parts = H9HCNNNFAMMLXR-NEE
diff --git a/src/mainboard/google/volteer/variants/volteer2/memory/dram_id.generated.txt b/src/mainboard/google/volteer/variants/volteer2/memory/dram_id.generated.txt
new file mode 100644
index 0000000000..637fd23f61
--- /dev/null
+++ b/src/mainboard/google/volteer/variants/volteer2/memory/dram_id.generated.txt
@@ -0,0 +1,6 @@
+DRAM Part Name                 ID to assign
+K4U6E3S4AA-MGCL                0 (0000)
+K4UBE3D4AA-MGCL                1 (0001)
+H9HCNNNBKMMLXR-NEE             0 (0000)
+MT53E1G32D2NP-046 WT:A         2 (0010)
+H9HCNNNFAMMLXR-NEE             3 (0011)
diff --git a/src/mainboard/google/volteer/variants/volteer2/memory/mem_list_variant.txt b/src/mainboard/google/volteer/variants/volteer2/memory/mem_list_variant.txt
new file mode 100644
index 0000000000..c532d0d0f2
--- /dev/null
+++ b/src/mainboard/google/volteer/variants/volteer2/memory/mem_list_variant.txt
@@ -0,0 +1,5 @@
+K4U6E3S4AA-MGCL
+K4UBE3D4AA-MGCL
+H9HCNNNBKMMLXR-NEE
+MT53E1G32D2NP-046 WT:A
+H9HCNNNFAMMLXR-NEE
diff --git a/src/mainboard/google/volteer/variants/volteer2/overridetree.cb b/src/mainboard/google/volteer/variants/volteer2/overridetree.cb
new file mode 100644
index 0000000000..24b869ced9
--- /dev/null
+++ b/src/mainboard/google/volteer/variants/volteer2/overridetree.cb
@@ -0,0 +1,165 @@
+chip soc/intel/tigerlake
+	device domain 0 on
+		device pci 15.0 on
+			chip drivers/i2c/generic
+				register "hid" = ""10EC5682""
+				register "name" = ""RT58""
+				register "desc" = ""Headset Codec""
+				register "irq_gpio" = "ACPI_GPIO_IRQ_EDGE_BOTH(GPP_F8)"
+				# Set the jd_src to RT5668_JD1 for jack detection
+				register "property_count" = "1"
+				register "property_list[0].type" = "ACPI_DP_TYPE_INTEGER"
+				register "property_list[0].name" = ""realtek,jd-src""
+				register "property_list[0].integer" = "1"
+				device i2c 1a on
+					probe AUDIO MAX98357_ALC5682I_I2S
+					probe AUDIO MAX98373_ALC5682I_I2S
+				end
+			end
+			chip drivers/i2c/max98373
+				register "vmon_slot_no" = "0"
+				register "imon_slot_no" = "1"
+				register "uid" = "0"
+				register "desc" = ""Right Speaker Amp""
+				register "name" = ""MAXR""
+				device i2c 31 on
+					probe AUDIO MAX98373_ALC5682I_I2S
+				end
+			end
+			chip drivers/i2c/max98373
+				register "vmon_slot_no" = "2"
+				register "imon_slot_no" = "3"
+				register "uid" = "1"
+				register "desc" = ""Left Speaker Amp""
+				register "name" = ""MAXL""
+				device i2c 32 on
+					probe AUDIO MAX98373_ALC5682I_I2S
+				end
+			end
+		end
+		device pci 15.1 on
+			chip drivers/i2c/hid
+				register "generic.hid" = ""GDIX0000""
+				register "generic.desc" = ""Goodix Touchscreen""
+				register "generic.irq" = "ACPI_IRQ_EDGE_LOW(GPP_E7_IRQ)"
+				register "generic.probed" = "1"
+				register "generic.reset_gpio" =
+							"ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C10)"
+				register "generic.reset_delay_ms" = "120"
+				register "generic.reset_off_delay_ms" = "3"
+				register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_A8)"
+				register "generic.enable_delay_ms" = "12"
+				register "generic.has_power_resource" = "1"
+				register "hid_desc_reg_offset" = "0x01"
+				device i2c 14 on end
+			end
+			chip drivers/i2c/hid
+				register "generic.hid" = ""ELAN90FC""
+				register "generic.desc" = ""ELAN Touchscreen""
+				register "generic.irq" = "ACPI_IRQ_EDGE_LOW(GPP_E7_IRQ)"
+				register "generic.probed" = "1"
+				register "generic.reset_gpio" =
+							"ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_C10)"
+				register "generic.enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_A8)"
+				register "generic.reset_delay_ms" = "20"
+				register "generic.has_power_resource" = "1"
+				register "generic.disable_gpio_export_in_crs" = "1"
+				register "hid_desc_reg_offset" = "0x01"
+				device i2c 10 on end
+			end
+		end # I2C1				0xA0E9
+		device pci 15.2 on
+			chip drivers/i2c/sx9310
+				register "desc" = ""SAR0 Proximity Sensor""
+				register "irq" = "ACPI_IRQ_LEVEL_LOW(GPP_F14_IRQ)"
+				register "speed" = "I2C_SPEED_FAST"
+				register "uid" = "0"
+				register "reg_prox_ctrl0" = "0x10"
+				register "reg_prox_ctrl1" = "0x00"
+				register "reg_prox_ctrl2" = "0x84"
+				register "reg_prox_ctrl3" = "0x0e"
+				register "reg_prox_ctrl4" = "0x07"
+				register "reg_prox_ctrl5" = "0xc6"
+				register "reg_prox_ctrl6" = "0x20"
+				register "reg_prox_ctrl7" = "0x0d"
+				register "reg_prox_ctrl8" = "0x8d"
+				register "reg_prox_ctrl9" = "0x43"
+				register "reg_prox_ctrl10" = "0x1f"
+				register "reg_prox_ctrl11" = "0x00"
+				register "reg_prox_ctrl12" = "0x00"
+				register "reg_prox_ctrl13" = "0x00"
+				register "reg_prox_ctrl14" = "0x00"
+				register "reg_prox_ctrl15" = "0x00"
+				register "reg_prox_ctrl16" = "0x00"
+				register "reg_prox_ctrl17" = "0x00"
+				register "reg_prox_ctrl18" = "0x00"
+				register "reg_prox_ctrl19" = "0x00"
+				register "reg_sar_ctrl0" = "0x50"
+				register "reg_sar_ctrl1" = "0x8a"
+				register "reg_sar_ctrl2" = "0x3c"
+				device i2c 28 on end
+			end
+		end # I2C2				0xA0EA
+		device pci 19.1 on
+			chip drivers/i2c/generic
+				register "hid" = ""ELAN0000""
+				register "desc" = ""ELAN Touchpad""
+				register "irq" = "ACPI_IRQ_WAKE_LEVEL_LOW(GPP_E15_IRQ)"
+				register "wake" = "GPE0_DW2_15"
+				register "probed" = "1"
+				device i2c 15 on end
+			end
+		end # I2C5				0xA0C6
+		device pci 1f.3 on
+			chip drivers/generic/max98357a
+				register "hid" = ""MX98357A""
+				register "sdmode_gpio" =  "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_A10)"
+				register "sdmode_delay" = "5"
+				device generic 0 on
+					probe AUDIO MAX98357_ALC5682I_I2S
+				end
+			end
+			chip drivers/intel/soundwire
+				device generic 0 on
+					probe AUDIO MAX98373_ALC5682_SNDW
+					chip drivers/soundwire/alc5682
+						# SoundWire Link 0 ID 1
+						register "desc" = ""Headset Codec""
+						device generic 0.1 on end
+					end
+					chip drivers/soundwire/max98373
+						# SoundWire Link 1 ID 3
+						register "desc" = ""Left Speaker Amp""
+						device generic 1.3 on end
+					end
+					chip drivers/soundwire/max98373
+						# SoundWire Link 1 ID 7
+						register "desc" = ""Right Speaker Amp""
+						device generic 1.7 on end
+					end
+				end
+			end
+		end
+		device pci 1f.2 hidden
+			# The pmc_mux chip driver is a placeholder for the
+			# PMC.MUX device in the ACPI hierarchy.
+			chip drivers/intel/pmc_mux
+				device generic 0 on
+					chip drivers/intel/pmc_mux/con
+						register "usb2_port_number" = "9"
+						register "usb3_port_number" = "1"
+						# SBU & HSL follow CC
+						device generic 0 on end
+					end
+					chip drivers/intel/pmc_mux/con
+						register "usb2_port_number" = "4"
+						register "usb3_port_number" = "2"
+						# SBU is fixed, HSL follows CC
+						register "sbu_orientation" = "TYPEC_ORIENTATION_NORMAL"
+						device generic 1 on end
+					end
+				end
+			end
+		end # PMC
+	end
+end