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MediaTek Helio G99 (MT6789/MT8781)

From postmarketOS Wiki
(Redirected from Mediatek MT6781)
MediaTek Helio G99
Helio G99
Helio G99
Manufacturer MediaTek
Name Helio G99
Architecture aarch64
CPU 2x 2.2 GHz ARM Cortex-A76
6x 2.0 GHz ARM Cortex-A55
GPU ARM Mali-G57 MC2
Year 2022
Process 6nm
Mainline partial
Components
CPU
SMP (bring up secondary CPU cores), CPU frequency scaling, CPUidle
Partial
UART
Works
Storage
eMMC, SD cards, UFS, ...
Works
USB
Works
Display
Partial
GPU
Works
Pinctrl
Works
I²C
Works
SPI
Serial Peripheral Interface
Works
Audio
Broken
Video
Hardware-accelerated video de/encoding
Broken
Thermal
Works
WiFi
Broken
Bluetooth
Broken
Modem
Calls, SMS, Internet
Broken
GPS
Broken
Camera
Broken
Suspend
Broken

The MediaTek Helio G99 is a mid-range SoC for tablets and gaming smartphones released in 2022. Two variants exist, MT6789 and MT8781, which are very similar and can use the same dts.[1]

Devices

MT6789

Device Codename Category Booting
LincPlus T4 lincplus-t4 No
Minimal Phone MP01 No
Teclast T50 Max teclast-t50max No
Teclast T65 Max teclast-t65max No
Tecno Pova 6 tecno-li7
Volla Phone X23 volla-vidofnir No
Xiaomi Redmi Note 13 Pro (4G) xiaomi-emerald Yes

MT8781

Device Codename Category Booting
Lenovo Tab Plus lenovo-tb351fu No
Xiaomi Redmi Pad xiaomi-yunluo No

Mainline Status:

Mainline fork

A close-to-mainline fork is developed for this SoC here: *link*

SMP

Only 6 cores are working for now.

USB

Works at both device/host modes. But dual-role mode is broken.

Display

GPU works. Only simple-framebuffer for now.

References