diff --git a/src/mainboard/google/kahlee/variants/careena/mainboard.c b/src/mainboard/google/kahlee/variants/careena/mainboard.c
new file mode 100644
index 0000000..937a411
--- /dev/null
+++ b/src/mainboard/google/kahlee/variants/careena/mainboard.c
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <ec/google/chromeec/ec.h>
+#include <baseboard/variants.h>
+#include <variant/sku.h>
+#include <string.h>
+#include <drivers/i2c/hid/chip.h>
+
+extern struct chip_operations drivers_i2c_generic_ops;
+extern struct chip_operations drivers_i2c_da7219_ops;
+
+void variant_devtree_update(void)
+{
+	uint32_t sku = google_chromeec_get_sku_id();
+	struct device *mmio_dev = NULL, *child = NULL;
+	struct device *alc_dev = NULL, *da7219_dev = NULL;
+
+	while (1) {
+		mmio_dev = dev_find_path(mmio_dev, DEVICE_PATH_MMIO);
+		if (mmio_dev == NULL)
+			break;
+		if (mmio_dev->path.mmio.addr == 0xfedc2000)
+			break;
+	}
+
+	if (mmio_dev == NULL)
+		return;
+
+	while ((child = dev_bus_each_child(mmio_dev->link_list, child)) != NULL) {
+		if (child->path.type != DEVICE_PATH_I2C)
+			continue;
+		if (child->path.i2c.device != 0x1a)
+			continue;
+		if (child->chip_ops == &drivers_i2c_generic_ops) {
+			struct drivers_i2c_generic_config *config = child->chip_info;
+			if (!strcmp(config->hid, "10EC5682"))
+				alc_dev = child;
+		} else if (child->chip_ops == &drivers_i2c_da7219_ops) {
+			da7219_dev = child;
+		}
+	}
+
+	switch (sku) {
+	default:
+		/* da7219 only */
+		if (da7219_dev)
+			da7219_dev->enabled = 1;
+		if (alc_dev)
+			alc_dev->enabled = 0;
+		break;
+	case SKU_BARLA_ALC5682_44:
+	case SKU_BARLA_ALC5682_45:
+	case SKU_BARLA_ALC5682_46:
+	case SKU_BARLA_ALC5682_47:
+		/* alc5682 only */
+		if (da7219_dev)
+			da7219_dev->enabled = 0;
+		if (alc_dev)
+			alc_dev->enabled = 1;
+		break;
+	}
+}