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Xiaomi Redmi 7A (xiaomi-pine)

From postmarketOS Wiki
Note This device is supported as part of a generic port. Refer to Generic MSM89x7 (qcom-msm89x7) for installation instructions and more information.
Xiaomi Redmi 7A
Xiaomi Redmi 7A running XFCE
Xiaomi Redmi 7A running XFCE
Manufacturer Xiaomi
Name Redmi 7A
Codename xiaomi-pine
Released 2019
Type handset
Hardware
Chipset Qualcomm Snapdragon 439 (SDM439)
CPU 4x1.95GHz
4x1.45GHz Cortex A53
GPU Adreno 505
Display 720x1440
Storage 16 / 32 GB
Memory 2 / 3 GB
Architecture aarch64
Software
Original software
The software and version the device was shipped with.
Android (MIUI) 9 (MIUI 10)
Extended version
The most recent supported version from the manufacturer.
Android (MIUI) 10
postmarketOS
Category testing
Mainline
Instead of a Linux kernel fork, it is possible to run (Close to) Mainline.
yes
pmOS kernel
The kernel version that runs on the device's port.
Mainline
Generic port Generic MSM89x7 (qcom-msm89x7)
Device package device-qcom-msm89x7
Kernel package linux-postmarketos-qcom-msm89x7
Features
Flashing
Whether it is possible to flash the device with pmbootstrap flasher.
Works
USB Networking
After connecting the device with USB to your PC, you can connect to it via telnet (initramfs) or SSH (booted system).
Works
Internal storage
eMMC, SD cards, UFS...
Works
SD card
Also includes other external storage cards.
Works
Battery
Whether charging and battery level reporting work.
Broken
Screen
Whether the display works; ideally with sleep mode and brightness control.
Partial
Touchscreen
Works
Keyboard
Whether the built-in physical keyboard works.
Untested
Multimedia
3D Acceleration
Broken
Audio
Audio playback, microphone, headset and buttons.
Broken
Camera
Broken
Connectivity
WiFi
Works
Bluetooth
Works
GPS
Broken
Modem
Calls
Broken
SMS
Broken
Mobile data
Broken
Miscellaneous
FDE
Full disk encryption and unlocking with unl0kr.
Works
USB OTG
USB On-The-Go or USB-C Role switching.
Works
Sensors
Accelerometer
Handles automatic screen rotation in many interfaces.
Works
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

Contributors

Users owning this device


How to enter flash mode

  • Fastboot: Power on the device with both Power and Volume Down buttons.
  • Recovery: Power on the device with both Power and Volume Up buttons; and while holding Volume Up, release Power.

Installation

Note Warning: Flashing lk2nd is required, as it is a hard dependency. Without it the mainline kernel will not select the display panel (resulting in black screen on boot).

Prebuilt dtbo images can be found here https://github.com/barni2000/dtbo-lk2nd/releases

$ pmbootstrap init # choose Vendor: qcom Device codename: msm89x7
$ pmbootstrap install
$ fastboot flash dtbo dtbo-xiaomi-pine.img
$ fastboot flash boot lk2nd.img # Build lk2nd from msm8916-mainline/lk2nd repo
$ pmbootstrap flasher flash_rootfs

Working UIs


Rotate screen (Downstream)

create file /etc/X11/xorg.conf.d/00-display-rotate.conf and put this

Section "Device"
  Identifier "LCD"
  Option "Rotate" "CW"
EndSection

also for rotate touchscreen you need to create udev file: /etc/udev/rules.d/98-touchscreen-cal.rules

ATTRS{name}=="fts_ts", ENV{LIBINPUT_CALIBRATION_MATRIX}="0 1 0 -1 0 1"

See also