Lenovo Yoga Tab 3 10 LTE/WiFi (lenovo-lxf-p5100)

From postmarketOS Wiki
Lenovo Yoga Tab 3 10 LTE
Manufacturer Lenovo
Name Yoga Tab 3 10 LTE
Codename lenovo-lxf-p5100
Model yt3-x50y,yt3-x50l,yt3-x50m
Released 2016
Type tablet
Hardware
Chipset Qualcomm Snapdragon 210 (MSM8909)
CPU Quad-core 1.3 GHz Cortex-A7
GPU Adreno 304
Display 800 x 1280 10.1" IPS LCD
Storage 16GB/32 GB
Memory 2 GB
Architecture armv7
Software
Original software Android
Original version 5.1
Extended version 6
postmarketOS
Category testing
Pre-built images no
Mainline yes
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: Downstream : Stuck at mr


Mainline : Waiting for kernel upgrade
Features
Flashing
Works
USB Networking
Broken
Internal storage
Works
SD card
Works
Battery
Broken
Screen
Partial
Touchscreen
Partial
Stylus
Partial
Multimedia
3D Acceleration
Broken
Audio
Broken
Camera
Broken
Camera Flash
Connectivity
WiFi
Works
Bluetooth
GPS
Modem
Calls
SMS
Mobile data
Miscellaneous
FDE
USB OTG
Partial
HDMI/DP
Sensors
Accelerometer
Broken
Magnetometer
Ambient Light
Proximity
Hall Effect
Haptics
Barometer
Lenovo Yoga Tab 3 10 WiFi
Manufacturer Lenovo
Name Yoga Tab 3 10 WiFi
Codename lenovo-lxf-p5100
Model yt3-x50f
Released 2016
Type tablet
Hardware
Chipset Qualcomm Snapdragon 212 (APQ8009)
CPU Quad-core 1.3 GHz Cortex-A7
GPU Adreno 304
Display 800 x 1280 10.1" IPS LCD
Storage 16GB/32 GB
Memory 2 GB
Architecture armv7
Software
Original software Android
Original version 5.1
Extended version 6
postmarketOS
Category testing
Pre-built images no
This device is marked as not booting.
Status: currently no one has worked it on the Wi-Fi model

The Lenovo Yoga Tab 3 10 LTE/WiFi is it interesting tablet that has a stand.There are QR code sticker that has a code name printed on it.The sticker is sticked onto the motherboard.All Lenovo Yoga Tab 3 10 LTE/WiFi variant code name appear to have lxf_p5100 prefix and a lot of different suffix.

Known suffixes :

_B01 : Model Name yt3-x50m,LTE Variant

_J01 : Model Name yt3-x50l,LTE Variant

_L01 : Model Name yt3-x50f,WIFI Variant



How to enter flash mode (fastboot)

adb reboot bootloader = fastboot mode (it will show little tux on screen)

or Press and hold Power + Volume Down until you see Lenovo logo

How to enter flash mode (edl)

Press and hold Power + Volume up while you plug it to a pc

How to enable developer option at setting

1. click build number 7 time at the about device in setting

How to unlock bootloader

0. Enable Allow bootloader to be unlocked at the developer option in setting

1. Boot to fastboot mode

2. fastboot oem unlock-go

3. wait until it has wipe every thing in userdata partition

What work?

Mainline

Feature Components Status Driver Note
Display MDP 3
Panel : boent35523b_800p, auoOTM1287A_800p
P N Mainline lack of MDP 3, Panel driver but the panel driver can be generated from downstream

simple buffer work.

GPU Adreno 304 N P Adreno 3XX is supported by freedreno but it dont support 304. Also gpu required iommu to work but iommu dont work
WiFi wcn3620 Y Y wcn3620 is a chip that responsable for BT,WiFi,FM.This chip found in many Qualcomm Snapdragon 210 (MSM8909) Qualcomm Snapdragon 410 (MSM8916) devices.
Bluetooth ?
FM ? ?
Modem ? ?
Audio Codec N N
Charger smb358 Charger N Y This Ic handle USB power out/mode switching,.Mainline has driver for it but the only current developer (with help from User:wonderfulShrineMaidenOfParadise couldnt get it to work.
Power management pm8909 Y Y
Battery Temperature Sensor ? ? It is connected to pm8916.

Also the only current developer's unit lack of Battery Temperature Sensor.(See the BAT_TEMP pin at below) Untested but mainline lack of temperature sensor driver it seem ?

Fuel Gauge bq27xxx N Y cant be tested , the only current developer's unit lack of Fuel Gauge. Also the mainline device tree is also missing related node.

The downstream kernel has used bq27x00 driver from ancient mainline kernel.However that driver seem be to has been replaced by bq27xxx

Rear Camera N N
Front Camera N N
Magnetometer Sensors ak09911 Y Y Managed to get some output via sysfs so it work
ACCELEROMETER Sensors Bochs BMA223 N N No Mainline driver
Light Sensors ELAN EPL2102 light sensor N N lack of mainline driver,rare chip
Touchscreen/Stylus hideep-ts-i2c P P It work great in kernel level (See libinput#1046)
Buttons Gpio button/pm8941-resin/pm8941-pwrkey Y Y
LEDs sn3191 P Y Power Led
Don't work due to sensors occupied the i2c bus.
Therefore it is possible to get it to work by removing the sensors from device tree.
USB Controller/Phy ChipIdea USB Controller /Qualcomm USB HS Phy P Y guest mode/mode switching dont work due to smb358 but host mode work

Downsteam

Display

Work (expect for rotation)

Backlight

Sometime the backlight is off druing boot.Overall it work.

Touchscreen

Work

Usb

Usb Netwoking (Guest Mode)

Work

Host Mode

Host made work,the device is able to switch to host mode when a otg cable is plugged into the device.

Power Out

sometime it work, sometime it dont work?

Fuel Gauge

Seem to work but untested

Charger

Seem to work

Missing Device Tree Changes

Here is the search results from searching 800p in a folder that contain all the dtb that is extracted from the stock android 's kernel :

# grep -rnw ./ -e '800p'
./13_dtbdump_Qualcomm_Technologies,_Inc._MSM8909_QRD_SKUE.dtb:25729:zauoOTM1287A 800p video mode dsi panel
./13_dtbdump_Qualcomm_Technologies,_Inc._MSM8909_QRD_SKUE.dtb:26365:zboeNT35523B 800p video mode dsi panel
./35_dtbdump_Qualcomm_Technologies,_Inc._MSM8208_1GB_QRD_SKUE.dtb:25034:zauoOTM1287A 800p video mode dsi panel
./35_dtbdump_Qualcomm_Technologies,_Inc._MSM8208_1GB_QRD_SKUE.dtb:25670:zboeNT35523B 800p video mode dsi panel
./32_dtbdump_Qualcomm_Technologies,_Inc._MSM8208_QRD_SKUE.dtb:25033:zauoOTM1287A 800p video mode dsi panel
./32_dtbdump_Qualcomm_Technologies,_Inc._MSM8208_QRD_SKUE.dtb:25669:zboeNT35523B 800p video mode dsi panel
./05_dtbdump_Qualcomm_Technologies,_Inc._MSM8909_QRD_SKUE.dtb:25728:zauoOTM1287A 800p video mode dsi panel
./05_dtbdump_Qualcomm_Technologies,_Inc._MSM8909_QRD_SKUE.dtb:26364:zboeNT35523B 800p video mode dsi panel

boent35523b_800p and auoOTM1287A_800p are panel that used in the device. According to that it seem there are few device tree has the device tree nodes for those two panels.

There are two dsti file in the downsteam kernel from lenovo that contain the device tree nodes for those two panels .However , none of the dts / dtsi file has used those 2 dsti file thus it seem some device tree changes that made by lenovo is missing in the kernel source.

Test pin/Soldering Point

There are a lot of soldering point/test pin on the motherboard. A lot of them is labelled.

Here is some of the pin that found in the motherboard.
Label Component Description
BAT_TEMP Battery Battery temperature sensor
VBAT+ Battery Battery positive
GND Battery Battery ground
SCL Touch screen/Fuel gauge There are 2xSCL bus test pin on on the board.

The one that near the battery socket is SCL pin of the fuel gauge 's i2c bus

The other one is the is SCL pin of the touch screen 's i2c bus

SDA Touch screen/Fuel gauge There are 2xSDA test pin on on the board.

The one that near the battery socket is SDA pin of the fuel gauge 's i2c bus

The other one is the is SDA pin of the touch screen 's i2c bus

PWR Buttons Power button
VOL+ Buttons Volume up button
VOL- Buttons Volume down button
LEDR LEDs Power LED positive
DP Micro USB Data Positive
DM Micro USB Data Negative
VBUS Micro USB Usb Power Negative
USB_ID Micro USB USB_ID pin of micro USB
Rx Uart Uart pin of Rx
Tx Uart Uart pin of Tx
VDD Touch screen VDD pin of the Touch screen , the main power source of the Touch screen
VID Touch screen VDD pin of the Touch screen , the main IO voltage of the Touch screen
INT Touch screen Interrupt pin of the Touch screen , It is connected to gpio 13 of the msm8909
RST Touch screen Reset pin of the Touch screen , It is connected to gpio 12 of the msm8909

Contributors

Chaosleo07

Maintainers

exkc

Users owning this device

  • Exkc (Notes: _B01 with removable battery mod and missing BMS(expect for pm8916's bms) , fuel gauge.)

Gallery

Installation

🚧 This page is a work-in-progress. Some information contained within may be inaccurate or incomplete.

lk2nd is a secondary bootloader that provides a standard fastboot interface, which can be used to boot postmarketOS without Android boot flashed or pmbootstrap flasher flash_kernel.

  1. The prebuilt image doesn't have the device included at the moment. Build lk2nd first.
  2. Boot your phone to bootloader (fastboot) mode.
  3. Follow lk2nd instructions from step 2 to install lk2nd. Basically flash it to the boot partition (fastboot flash boot build-lk2nd-msm8909/lk2nd.img)
  4. Follow Qualcomm_Snapdragon_410/412_(MSM8916)#Installation to install postmarketOS.
Note Note: Enter lk2nd fastboot mode by pressing Volume Down after booting (this time wait until it vibrates then press Volume Down!

See also