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Xiaomi Redmi S2 / Redmi Y2 (xiaomi-ysl)

From postmarketOS Wiki
Note This device is supported as part of a generic port. Refer to Generic MSM8953 (qcom-msm8953) for installation instructions and more information.
Xiaomi Redmi S2
Redmi Y2
Manufacturer Xiaomi
Name Redmi S2
Redmi Y2
Codename xiaomi-ysl
Released 2018
Type handset
Hardware
Chipset Qualcomm Snapdragon 625 (MSM8953)
CPU Octa-core 2.0 GHz Cortex-A53
GPU Adreno 506
Display 720 x 1440 IPS
Storage 32 GB / 64 GB
Memory 3 GB / 4 GB
Architecture aarch64
Software
Original software
The software and version the device was shipped with.
 Android 8.1
FOSS bootloader yes
postmarketOS
Category community
Pre-built images
Whether pre-built images are available here.
 no
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.
 6.7.5
Unixbench score
Unixbench Whetstone/Dhrystone score. See Unixbench.
 4109.86
Generic port Generic MSM8953 (qcom-msm8953)
Device package device-qcom-msm8953
Kernel package linux-postmarketos-qcom-msm8953
Features
Flashing
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
Charging and battery level reporting works
Works
Screen
Display works. Ideally with sleep mode and brightness control.
Works
Touchscreen
Works
Multimedia
3D Acceleration
Works
Audio
Audio playback, microphone, headset and buttons.
Works
Camera
Partial
Connectivity
WiFi
Works
Bluetooth
Works
GPS
Partial
Modem
Calls
Works
SMS
Works
Mobile data
Partial
Miscellaneous
FDE
Full disk encryption and unlocking with unl0kr.
Works
USB OTG
USB On-The-Go or USB-C Role switching
Works
Sensors
Accelerometer
Auto screen rotation works in desktops e.g. Phosh or Plasma Mobile
Works
Magnetometer
Sensor to measure magnetism
Broken
Ambient Light
Works
Proximity
Broken
Hall Effect
Also known as flip cover sensor
Broken
Haptics
Works
Power Sensor
Sensor to monitor current, voltage and power. Not fuel gauge!
Works
This device is based on the Qualcomm Snapdragon 450 (MSM8953).
See the SoC page for common tips, guides and troubleshooting steps

Maintainer(s)

Contributors

Users owning this device


Mainline kernel

Parts Hardware Status
Chipset MSM8953 Works
GPU Adreno 506 Works
Modem - Partial
Touch Screen fts_ts Works
Fingerprint goodix_fp Broken
Accelerometer BMI120 Works
Magnetometer AK09918 Broken
Sound msm8953sndcardm Works
Notifications LED AW2013 Works
Panel hx8394f, ili9881c, ili7807d Works
Front Camera S5K3P8SP Partial
Main Back Camera IMX486, OV12A10 Broken
Second Back Camera S5K5E8 Broken

Installation

Note Note: lk2nd is a hard dependency, without it the mainline kernel will not select the panel. 
$ pmbootstrap init # choose Vendor: qcom Device codename: msm8953
$ pmbootstrap install
$ pmbootstrap flasher flash_lk2nd
$ pmbootstrap flasher flash_rootfs

How to enter flash mode

Note Note: Pressing the keys too early will cause the stock bootloader to handle the key combination. You will end up in the wrong Fastboot interface.
  • Stock Fastboot: Power on the device with both Power and Volume Down buttons
  • lk2nd Fastboot: Power on the device. After it vibrates, hold Volume Down
  • Recovery: Power on the device with both Power and Volume Up buttons

Modem

Modem works since 6.7.2.

Note Note: Mobile data, SMS and Calls are working. Mobile data not works on every device.

Photos

  • Unixbench
    Unixbench
  • Phosh
    Phosh
  • KDE Mobile
    KDE Mobile

See also

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