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Digma 1538E 4G (ps1150ml)

From postmarketOS Wiki
This device is marked as not booting.
Status: No source dowstream kernel. Trying to make mainline for mt6735
Digma 1538E 4G
Android running
Android running
Manufacturer Digma
Name 1538E 4G
Codename digma-ps1150ml
Released 2017
Type tablet
Hardware
Chipset MediaTek MT8735
CPU 4x Cortex-A53 1.3 GHz
GPU Mali-T720
Display 1920x1200 IPS 10.1
Storage 32 GB
Memory 2 GB
Architecture aarch64
Software
Original software Android
Original version 7.0
FOSS bootloader yes
postmarketOS
Category testing
Pre-built images no
Mainline yes
U-Boot
Primary Bootloader
Works
Secondary Bootloader
Works
Mainline
Broken
SD card
Works
Display
Broken

Contributors

  • km2
  • kedi

Maintainer(s)

Users owning this device

  • Kedi (Notes: Trying to get downstream from vendor)
  • Km2


How to enter flash mode

Use adb reboot bootloader or hold Power+Volume Down to enter fastboot mode.

Hold Volume Down when connecting to a PC if you're flashing via spflashtool.

Partition layout

PS1150ML:/ # ls -la /dev/block/platform/mtk-msdc.0/11230000.msdc0/by-name/
lrwxrwxrwx 1 root root  20 2015-09-01 00:04 boot -> /dev/block/mmcblk0p7
lrwxrwxrwx 1 root root  21 2015-09-01 00:04 cache -> /dev/block/mmcblk0p22
lrwxrwxrwx 1 root root  21 2015-09-01 00:04 custom -> /dev/block/mmcblk0p17
lrwxrwxrwx 1 root root  21 2015-09-01 00:04 expdb -> /dev/block/mmcblk0p10
lrwxrwxrwx 1 root root  21 2015-09-01 00:04 flashinfo -> /dev/block/mmcblk0p24
lrwxrwxrwx 1 root root  21 2015-09-01 00:04 frp -> /dev/block/mmcblk0p18
lrwxrwxrwx 1 root root  21 2015-09-01 00:04 keystore -> /dev/block/mmcblk0p14
lrwxrwxrwx 1 root root  20 2015-09-01 00:04 lk -> /dev/block/mmcblk0p5
lrwxrwxrwx 1 root root  20 2015-09-01 00:04 logo -> /dev/block/mmcblk0p9
lrwxrwxrwx 1 root root  21 2015-09-01 00:04 metadata -> /dev/block/mmcblk0p20
lrwxrwxrwx 1 root root  21 2015-09-01 00:04 nvdata -> /dev/block/mmcblk0p19
lrwxrwxrwx 1 root root  20 2015-09-01 00:04 nvram -> /dev/block/mmcblk0p2
lrwxrwxrwx 1 root root  20 2015-09-01 00:04 para -> /dev/block/mmcblk0p6
lrwxrwxrwx 1 root root  20 2015-09-01 00:04 proinfo -> /dev/block/mmcblk0p1
lrwxrwxrwx 1 root root  20 2015-09-01 00:04 protect1 -> /dev/block/mmcblk0p3
lrwxrwxrwx 1 root root  20 2015-09-01 00:04 protect2 -> /dev/block/mmcblk0p4
lrwxrwxrwx 1 root root  20 2015-09-01 00:04 recovery -> /dev/block/mmcblk0p8
lrwxrwxrwx 1 root root  21 2015-09-01 00:04 seccfg -> /dev/block/mmcblk0p11
lrwxrwxrwx 1 root root  21 2015-09-01 00:04 secro -> /dev/block/mmcblk0p13
lrwxrwxrwx 1 root root  21 2015-09-01 00:04 system -> /dev/block/mmcblk0p21
lrwxrwxrwx 1 root root  21 2015-09-01 00:04 tee1 -> /dev/block/mmcblk0p15
lrwxrwxrwx 1 root root  21 2015-09-01 00:04 tee2 -> /dev/block/mmcblk0p16
lrwxrwxrwx 1 root root  21 2015-09-01 00:04 userdata -> /dev/block/mmcblk0p23
lrwxrwxrwx 1 root root  21 2015-09-01 00:04 oemkeystore -> /dev/block/mmcblk0p12

Installation

Mainline kernel?

This device is based on MT8735W chipset.

Part Supported?
SoC(MT8735W) Broken/Partial
K101-MM2BA02-A panel No
Sandisk sdinadf4-32g EMMC chip Yes
GalaxyCore GC5025 Back camera No
GalaxyCore GC2365 Front camera No
MT6328 PMIC No
MT6625L BT/Wifi chip No
MT6169 maybe LTE No
MT6158 RF No
NTC3201 Temperature sensor No
GSL3676 touchscreen chip / CY101S200-01 touch panel No

UART

On the board, next to the reset button, there are 4 pins: Tx1, Rx1, Tx0, Rx0. With Tx0 I was able to get the bootloader messages. Listen at a speed of 921600


Size of UART pins. Use thin copper wire and connect to Tx0 Rx0.

Mainline status

Still in its infancy. Simple-framebuffer and UART partially works. https://github.com/mt6735-mainline/linux

Photos

See also