1 files changed, 75 insertions, 0 deletions
diff --git a/src/mainboard/google/kahlee/variants/liara/overridetree.cb b/src/mainboard/google/kahlee/variants/liara/overridetree.cb
new file mode 100644
index 000000000000..a80229fe1013
--- /dev/null
+++ b/src/mainboard/google/kahlee/variants/liara/overridetree.cb
@@ -0,0 +1,75 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+chip soc/amd/stoneyridge
+	register "lvds_poseq_varybl_to_blon" = "0x5" # in 4ms
+	register "lvds_poseq_blon_to_varybl" = "0x5" # in 4ms
+
+	# Enable I2C0 for audio, USB3 hub at 400kHz
+	register "i2c[0]" = "{
+		.speed = I2C_SPEED_FAST,
+		.rise_time_ns = 85,
+		.fall_time_ns = 3,
+	}"
+
+	# Enable I2C1 for H1 at 400kHz
+	register "i2c[1]" = "{
+		.early_init = 1,
+		.speed = I2C_SPEED_FAST,
+		.rise_time_ns = 3,
+		.fall_time_ns = 2,
+	}"
+
+	# Enable I2C2 for trackpad, pen at 400kHz
+	register "i2c[2]" = "{
+		.speed = I2C_SPEED_FAST,
+		.rise_time_ns = 3,
+		.fall_time_ns = 2,
+	}"
+
+	# Enable I2C3 for touchscreen at 400kHz
+	register "i2c[3]" = "{
+		.speed = I2C_SPEED_FAST,
+		.rise_time_ns = 16,
+		.fall_time_ns = 8,
+	}"
+
+	device ref i2c_0 on
+		chip drivers/generic/adau7002
+			register "wakeup_delay" = "20"
+			device generic 0.0 on end
+		end
+	end
+	device ref i2c_2 on
+		chip drivers/i2c/generic
+			register "hid" = ""ELAN0000""
+			register "desc" = ""ELAN Touchpad""
+			register "irq_gpio" = "ACPI_GPIO_IRQ_LEVEL_LOW(GPIO_5)"
+			register "wake" = "7"
+			register "detect" = "1"
+			device i2c 15 on end
+		end
+		chip drivers/i2c/hid
+			register "generic.hid" = ""PNP0C50""
+			register "generic.desc" = ""Synaptics Touchpad""
+			register "generic.irq_gpio" = "ACPI_GPIO_IRQ_LEVEL_LOW(GPIO_5)"
+			register "generic.wake" = "7"
+			register "generic.detect" = "1"
+			register "hid_desc_reg_offset" = "0x20"
+			device i2c 2c on end
+		end
+	end
+	device ref i2c_3 on
+		chip drivers/i2c/generic
+			register "hid" = ""RAYD0001""
+			register "desc" = ""Raydium Touchscreen""
+			register "probed" = "1"
+			register "irq_gpio" = "ACPI_GPIO_IRQ_LEVEL_LOW(GPIO_11)"
+			register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_85)"
+			register "reset_delay_ms" = "20"
+			register "enable_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_76)"
+			register "enable_delay_ms" = "1"
+			register "has_power_resource" = "1"
+			device i2c 39 on end
+		end
+	end
+end	#chip soc/amd/stoneyridge