ASUS Transformer Prime (asus-tf201)
Users owning this device
The first step to do anything with the device is unlocking, with this device its done by sideloading the unlock apk from ASUS and clicking a few buttons in the app. The apk can be found on the ASUS support page.
- 3.1 kernel based on ASUS sources with updates till Oreo support (Morpheus kernel)
- 3.4 kernel as a part of Unlegacy Android Project (Unlegacy kernel)
- Baseline kernel sources on master: https://github.com/grate-driver/linux
- Basic dts for TF201 is added
- Version: 5.8.0-rc2
- Status: Boots.
How to enter flash modes
Turn tablet off if it is in the system. Then press POWER and VOL DOWN buttons till you feel the vibration. Then release the POWER only. You will enter the bootloader. In bootloader navigate with VOL DOWN button and to choose option use VOL UP button.
The bootloader doesn't handle flashing the boot and userdata partition correctly, the official firmware package flashes an "Android blob" to the staging partition with fastboot which triggers an flashing screen on the tablet which copies the data to the correct partitions. Flashing ordinary images using TWRP recovery goes properly. Using latest TWRP is highly recommended.
You need to be running Katkiss 7.1 (with TWRP 3.0.0 and hairy bean bootloader). Please follow this guide on XDA if you're not.
- Reboot the device in recovery
adb push /tmp/postmarketOS-export/blob-asus-tf201 /cache
adb push /tmp/postmarketOS-export/asus-tf201.img /cache
The following should be executed within adb shell:
dd if=/cache/blob-asus-tf201 of=/dev/block/mmcblk0p4
dd if=/cache/asus-tf201.img of=/dev/block/mmcblk0p1
Note: Other ways of flashing do not work. This is exactly how the katkiss android ROM is flashed to the device.
Hardware status (mainline)
|N||Booting||When kernel is larger than approx 8MB, initfs must be packed directly inside kernel (not into boot.img as usual), otherwise kernel won't boot. With downstream kernel it works.|
|N||Panel||HannStar HSD101PWW2 Rev0-A00/A01 LCD SuperIPS+ HD panel.|
|N||HDMI output||HDMI lines are present in device tree.|
|N||Touchscreen||Used Atmel MXT768E touchscreen.|
|N||USB||One full size USB 2.0 in dock or via 40pin adapter.|
|N||SD HCI||MicroSD card and full sized SD card in dock.|
|N||Internal memory||eMMC by Kingston KE4BT5D6A or Hynix H26M64002BNR.|
|N||GPS||Broadcom GPS BCM4751 is used.|
|N||WiFi||Wi-Fi might work (best with IWD daemon: apk add iwd; rc-config del wpa_supplicant; rc-config add iwd; and HOWTO).|
|N||Bluetooth||Uses Azurewave AW-NH615 BCM4329B1.|
|N||GPIO keys||There is 3 keys on GPIO: Power, Volume up, Volume down.
Additionally GPIO-keys like are LID sensor, Power adapter 15V and Audio dock line-out detect.
|N||Vibro||Transformer Prime has GPIO based vibrator.|
|N||Dock Keyboard||It is handled via Nuvoton NPCE795LA0BX embedded controller and driver is mostly mainlined.|
|N||Battery/Charger||Driver is based on Texas Instruments bq24725 SMBus Charge Controller driver but works through pad/dock EC.|
|N||PMIC||Transformers use Texas Instruments TPS659110 PMIC and TPS62361 core regulator.|
|N||Sound||Sound codec is RT5631 and needs additional maintenance in kernel.|
|N||Voice processor||Transformers use separate Fortemedia FM34NE voice processor, which needs additional maintenance in kernel.|
|N||Thermal sensor||NCT1008 ON Semiconductor LM90 series thermometer.|
|N||Orientation sensors||Include Invensense mpu3050 gyroscope with Kionix KXTF9 accelerometer and Aichi AMI306 3-axis digital compass.|
|N||Light sensor||Driver Dyna-Image AL3010. Brightness regulation works, install iio-sensor-proxy . It's slightly oversensitive.|
|N||Front camera||Aptina mi1040 camera sensor.|
|N||Rear camera||Fujitsu MBG048 image processor.|
|P||ULP GeForce||GPU Acceleration partially works.|
- Asus Transformer device family on Tegra 3 includes also Transformer Pad TF300T and Transformer Pad Infinity TF700T
- Katkiss android ROM XDA link
- How to get your tf201 to katkiss XDA link
- More about the device Wikipedia entry
- WIP feature branch Gitlab