android_kernel_rainx_theloop

LineageOS 23.2 (Android 16) kernel for the theloop smart speaker (MediaTek MT6877).

This repo is a fork of UN1CA/kernel_samsung_a34x with theloop-specific additions. The Samsung Galaxy A34 5G shares enough of theloop's hardware (SoC, combo chip, DRM/audio paths) that its kernel works on theloop with a small defconfig overlay. No kernel source changes, just config.

Branches

• sixteen — tracks UN1CA upstream unchanged. Used as the base for rebases when pulling security updates.
• lineage-23.2 — theloop branch. sixteen + 1 commit adding theloop_overlay.config and theloop build wrapper.

Layout

build_kernel.sh                                         # wrapper
kernel/kernel_device_modules-6.6/
    kernel/configs/theloop_overlay.config               # theloop defconfig overlay
    kernel/configs/mt6877_overlay.config                # (upstream) MT6877 overlay
    ...

Building

Fresh checkout on Ubuntu 22.04, ~50 GB disk free, working internet:

git clone https://github.com/LosSantosPro/android_kernel_rainx_theloop.git
cd android_kernel_rainx_theloop
git checkout lineage-23.2
./build_kernel.sh

The wrapper is idempotent. It will:

1. Install repo if not already present.
2. repo sync the AOSP common-android15-6.6 kernel manifest into aosp-kernel/.
3. Download Clang r536225 prebuilt.
4. Patch Kleaf build configs for reproducible builds (SOURCE_DATE_EPOCH, strip -maybe-dirty, pin clang version).
5. Run build.sh (Bazel) with theloop_overlay.config appended to the defconfig overlay stack.

Outputs land in out/target/product/a34x/obj/KLEAF_OBJ/dist/:

• Image.gz
• dtb.img
• dtbo.img
• ~200 .ko modules

Expected vermagic: 6.6.127-android15-8-abogkiA346BXXSEEZB6-4k SMP preempt mod_unload modversions aarch64

Integrating with the device tree

The theloop LineageOS device tree at LosSantosPro/android_device_rainx_theloop consumes the kernel as prebuilts, not as source. After building:

# Kernel image + dtb/dtbo
cp out/target/product/a34x/obj/KLEAF_OBJ/dist/Image.gz  <device-tree>/prebuilts/
cp out/target/product/a34x/obj/KLEAF_OBJ/dist/dtb.img   <device-tree>/prebuilts/
cp out/target/product/a34x/obj/KLEAF_OBJ/dist/dtbo.img  <device-tree>/prebuilts/

# Updated connectivity / DRM / audio kernel modules live in vendor_dlkm
cp out/target/product/a34x/obj/KLEAF_OBJ/dist/<module>.ko  <device-tree>/prebuilts/vendor_dlkm/

The device tree's BoardConfig.mk references these prebuilts via TARGET_PREBUILT_KERNEL, TARGET_PREBUILT_DTB, and BOARD_PREBUILT_DTBOIMAGE. There is no Kleaf integration into Soong — MediaTek Kleaf kernels are built separately and imported as prebuilts, same as most modern Mediatek LineageOS ports.

theloop_overlay.config contents

CONFIG_SND_SOC_RT5512=m                     # RT5512 audio amplifier
# CONFIG_SMCDSD_PANEL is not set             # Disable Samsung panel framework
# CONFIG_SMCDSD_* is not set                 # ...and related options
# CONFIG_DRM_PANEL_MCD_COMMON is not set     # theloop uses DTS-driven panel driver

Rationale in the file's inline comments.

Pulling ASB updates from upstream

git checkout sixteen
git pull upstream sixteen
git checkout lineage-23.2
git rebase sixteen
# resolve conflicts in build_kernel.sh / theloop_overlay.config if any
./build_kernel.sh  # rebuild + copy prebuilts to device tree

Credits

• Upstream kernel maintenance: UN1CA
• Base: AOSP common-android15-6.6 GKI
• MTK device modules: Samsung/MediaTek (via UN1CA)