diff --git a/Android.bp b/Android.bp
new file mode 100644
index 0000000..bb6ecd0
--- /dev/null
+++ b/Android.bp
@@ -0,0 +1,8 @@
+//
+// Copyright (C) 2022 The LineageOS Project
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
+soong_namespace {
+}
diff --git a/Android.mk b/Android.mk
new file mode 100644
index 0000000..3aec131
--- /dev/null
+++ b/Android.mk
@@ -0,0 +1,11 @@
+#
+# Copyright (C) 2022 The LineageOS Project
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+LOCAL_PATH := $(call my-dir)
+
+ifneq ($(filter rosemary, $(TARGET_DEVICE)),)
+include $(call all-makefiles-under,$(LOCAL_PATH))
+endif
diff --git a/AndroidProducts.mk b/AndroidProducts.mk
new file mode 100644
index 0000000..53e3213
--- /dev/null
+++ b/AndroidProducts.mk
@@ -0,0 +1,13 @@
+#
+# Copyright (C) 2022 The LineageOS Project
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+PRODUCT_MAKEFILES := \
+    $(LOCAL_DIR)/lineage_rosemary.mk
+
+COMMON_LUNCH_CHOICES := \
+    lineage_rosemary-user \
+    lineage_rosemary-userdebug \
+    lineage_rosemary-eng
diff --git a/BoardConfig.mk b/BoardConfig.mk
new file mode 100644
index 0000000..229b03c
--- /dev/null
+++ b/BoardConfig.mk
@@ -0,0 +1,10 @@
+#
+# Copyright (C) 2022 The LineageOS Project
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+DEVICE_PATH := device/xiaomi/rosemary
+
+# Inherit the proprietary files
+include vendor/xiaomi/rosemary/BoardConfigVendor.mk
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..5fdbfe3
--- /dev/null
+++ b/README.md
@@ -0,0 +1,9 @@
+# Device tree for Redmi Note 10S
+
+```
+#
+# Copyright (C) 2022 The LineageOS Project
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+```
diff --git a/device.mk b/device.mk
new file mode 100644
index 0000000..631494e
--- /dev/null
+++ b/device.mk
@@ -0,0 +1,15 @@
+#
+# Copyright (C) 2022 The LineageOS Project
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+# Shipping API level
+PRODUCT_SHIPPING_API_LEVEL := 30
+
+# Soong namespaces
+PRODUCT_SOONG_NAMESPACES += \
+    $(LOCAL_PATH)
+
+# Inherit the proprietary files
+$(call inherit-product, vendor/xiaomi/rosemary/rosemary-vendor.mk)
diff --git a/extract-files.sh b/extract-files.sh
new file mode 100755
index 0000000..25654d9
--- /dev/null
+++ b/extract-files.sh
@@ -0,0 +1,61 @@
+#!/bin/bash
+#
+# Copyright (C) 2016 The CyanogenMod Project
+# Copyright (C) 2017-2020 The LineageOS Project
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+set -e
+
+DEVICE=rosemary
+VENDOR=xiaomi
+
+# Load extract_utils and do some sanity checks
+MY_DIR="${BASH_SOURCE%/*}"
+if [[ ! -d "${MY_DIR}" ]]; then MY_DIR="${PWD}"; fi
+
+ANDROID_ROOT="${MY_DIR}/../../.."
+
+HELPER="${ANDROID_ROOT}/tools/extract-utils/extract_utils.sh"
+if [ ! -f "${HELPER}" ]; then
+    echo "Unable to find helper script at ${HELPER}"
+    exit 1
+fi
+source "${HELPER}"
+
+# Default to sanitizing the vendor folder before extraction
+CLEAN_VENDOR=true
+
+KANG=
+SECTION=
+
+while [ "${#}" -gt 0 ]; do
+    case "${1}" in
+        -n | --no-cleanup )
+                CLEAN_VENDOR=false
+                ;;
+        -k | --kang )
+                KANG="--kang"
+                ;;
+        -s | --section )
+                SECTION="${2}"; shift
+                CLEAN_VENDOR=false
+                ;;
+        * )
+                SRC="${1}"
+                ;;
+    esac
+    shift
+done
+
+if [ -z "${SRC}" ]; then
+    SRC="adb"
+fi
+
+# Initialize the helper
+setup_vendor "${DEVICE}" "${VENDOR}" "${ANDROID_ROOT}" false "${CLEAN_VENDOR}"
+
+extract "${MY_DIR}/proprietary-files.txt" "${SRC}" "${KANG}" --section "${SECTION}"
+
+"${MY_DIR}/setup-makefiles.sh"
diff --git a/lineage_rosemary.mk b/lineage_rosemary.mk
new file mode 100644
index 0000000..492cbcf
--- /dev/null
+++ b/lineage_rosemary.mk
@@ -0,0 +1,23 @@
+#
+# Copyright (C) 2022 The LineageOS Project
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+# Inherit from those products. Most specific first.
+$(call inherit-product, $(SRC_TARGET_DIR)/product/core_64_bit.mk)
+$(call inherit-product, $(SRC_TARGET_DIR)/product/full_base_telephony.mk)
+
+# Inherit from device makefile.
+$(call inherit-product, device/xiaomi/rosemary/device.mk)
+
+# Inherit some common LineageOS stuff.
+$(call inherit-product, vendor/lineage/config/common_full_phone.mk)
+
+PRODUCT_NAME := lineage_rosemary
+PRODUCT_DEVICE := rosemary
+PRODUCT_MANUFACTURER := Xiaomi
+PRODUCT_BRAND := Redmi
+PRODUCT_MODEL := Redmi Note 10S
+
+PRODUCT_GMS_CLIENTID_BASE := android-xiaomi
diff --git a/setup-makefiles.sh b/setup-makefiles.sh
new file mode 100755
index 0000000..08d35b4
--- /dev/null
+++ b/setup-makefiles.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+#
+# Copyright (C) 2016 The CyanogenMod Project
+# Copyright (C) 2017-2020 The LineageOS Project
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+set -e
+
+DEVICE=rosemary
+VENDOR=xiaomi
+
+# Load extract_utils and do some sanity checks
+MY_DIR="${BASH_SOURCE%/*}"
+if [[ ! -d "${MY_DIR}" ]]; then MY_DIR="${PWD}"; fi
+
+ANDROID_ROOT="${MY_DIR}/../../.."
+
+HELPER="${ANDROID_ROOT}/tools/extract-utils/extract_utils.sh"
+if [ ! -f "${HELPER}" ]; then
+    echo "Unable to find helper script at ${HELPER}"
+    exit 1
+fi
+source "${HELPER}"
+
+# Initialize the helper
+setup_vendor "${DEVICE}" "${VENDOR}" "${ANDROID_ROOT}"
+
+# Warning headers and guards
+write_headers
+
+write_makefiles "${MY_DIR}/proprietary-files.txt" true
+
+# Finish
+write_footers