Xiaomi Mi Pad (xiaomi-mocha)
Appearance
| This device has been tested with postmarketOS, but its device package has not yet been added to the postmarketOS repositories. This means that it cannot be selected in pmbootstrap. Status: mainline in progress |
|
Xiaomi Mi Pad | |
| Manufacturer | Xiaomi |
|---|---|
| Name | Mi Pad |
| Codename | xiaomi-mocha |
| Released | 2014 |
| Type | tablet |
| Hardware | |
| Chipset | Nvidia Tegra K1 (T124) |
| CPU | 4x 2.2 GHz Cortex-A15 |
| GPU | Nvidia GK20A (192-core Kepler) |
| Display | 1536 x 2048 LCD IPS |
| Storage | 16 GB / 64 GB |
| Memory | 2 GB |
| Architecture | armv7 |
| Software | |
Original software The software and version the device was shipped with. |
Android 4.4.4 |
Extended version The most recent supported version from the manufacturer. |
Android |
| FOSS bootloader | yes |
Mainline Instead of a Linux kernel fork, it is possible to run (Close to) Mainline. |
no |
Flashing Whether it is possible to flash the device with pmbootstrap flasher. |
Untested
|
|---|---|
USB Networking After connecting the device with USB to your PC, you can connect to it via telnet (initramfs) or SSH (booted system). |
Broken
|
Battery Whether charging and battery level reporting work. |
Untested
|
Screen Whether the display works; ideally with sleep mode and brightness control. |
Partial
|
Touchscreen |
Broken
|
| Multimedia | |
3D Acceleration |
Broken
|
Audio Audio playback, microphone, headset and buttons. |
Untested
|
Camera |
Untested
|
| Connectivity | |
WiFi |
Works
|
Bluetooth |
Untested
|
GPS |
Untested
|
| Miscellaneous | |
FDE Full disk encryption and unlocking with unl0kr. |
Untested
|
USB OTG USB On-The-Go or USB-C Role switching. |
Untested
|
| Sensors | |
Accelerometer Handles automatic screen rotation in many interfaces. |
Untested
|
Magnetometer Sensor to measure the Earth's magnetism |
Untested
|
Ambient Light Measures the light level; used for automatic screen dimming in many interfaces. |
Untested
|
Proximity |
Untested
|
Hall Effect Measures magnetic fields; usually used as a flip cover sensor |
Untested
|
Power Sensor Sensor to monitor current, voltage and power. Not fuel gauge! |
Untested
|
Primary Bootloader Whether it is possible to replace stock bootloader with U-Boot. |
Works
|
|---|---|
Secondary Bootloader Whether it is possible to chainload U-Boot from stock bootloader. |
Works
|
Mainline Whether latest upstream versions of U-Boot are not broken and it is possible to use them. |
Works
|
Internal Storage Whether it is possible to boot from internal storage (e.g. eMMC or UFS). |
Works
|
SD card Whether it is possible to boot from SD card. |
Works
|
USB Host Whether it is possible to boot from a USB storage or connect a keyboard. |
Broken
|
USB Peripheral Whether it is possible to use device as a peripheral in U-Boot, e.g. for fastboot mode. |
Works
|
Display |
Partial
|
Buttons Whether it is possible to navigate in boot menu or grub with volume and power buttons. |
Works
|
| This device is based on the Tegra K1. See the SoC page for common tips, guides and troubleshooting steps |
Contributors
- CEllenvia
Users owning this device
- CEllenvia (Notes: 64Giga, Atmel touchpad)
- Clamor (Notes: pmOS with Grate kernel and U-Boot)
- IonAgorria (Notes: Stock - OK)
How to enter flash mode
will use upstream u-boot, WIP
Installation
WIP
Progress
Now turn to FOSS Boot-loader porting, since the Linux kernel refused to boot w/o firmware built-in.
Mainline Status
Reading existing tree and trying to boot the minimal system.
Kernel Boot Log
https://github.com/MiPadLinux/stuff/blob/main/ttyUSB0 d254a6c.log
Function Sheet
| Function | Hardware | Status | Info |
|---|---|---|---|
| Boot | - | Y | 6.15.0/6.15.1 |
| Display | Sharp LQ079L1SX01/AUO ? | P | Only work in u-boot |
| Touchscreen | Atmel mXT1664T2-C2U/Synaptics 7040(?) | P | There are two kinds of touchscreen, which for my device is mXT1664T2-C2U. Upstream Broken. |
| Onscreen RGB LED | Texas Instruments(National Semiconductor) LP5521 | Y | Need to add to DTS Documentation/leds/leds-lp5521 |
| Backlight LED | Texas Instruments LP8556 | Y | - |
| Charger IC | Texas Instruments BQ24192 | Y | Need to add to DTS power/supply/bq24190 |
| Battery Management | Texas Instruments BQ27520-G4 | Y | Need to add to DTS power/supply/bq27xxx |
| Power Management & NTP etc. (palmas) | Texas Instruments TPS65913 | Y | |
| Wi-Fi, BT & FM | Cypress(Broadcom) CYW4354XKUBG | P | net/wireless/brcm,bcm4329-fmac, WiFi worked. |
| GPU | NVIDIA GK20A | P | Known issues |
| Audio | NXP TFA9890 & Realtek RT5671 | - | sound/nxp,tfa989x, Missing bindings for RT5671 |
| Ambient Light | Renesas ISL29035 | - | iio/light/isl29018 |
| Magnetometer | AKM09911 | - | Is it exists? |
| Gyro + Accelerometer | TDK MPU6515 | - | Need to add to DTS iio/imu/invensense,mpu6050 |
| Camera | Sony IMX179 & Omni OV5696 | N |
See also
The kernel Xiaomi official released: [1]
The kernel used for mainline: [2]