Xiaomi Poco F1 (xiaomi-beryllium)

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Xiaomi Pocophone F1
Manufacturer Xiaomi
Name Pocophone F1
Codename xiaomi-beryllium
Released 2018
Category community
Original software MIUI 9.6 (based on Android 8.1)
Hardware
Chipset Qualcomm SDM845 Snapdragon 845
CPU Octa-core (4x 2.8 GHz Kryo 385 Gold & 4x 1.8 GHz Kryo 385 Silver)
GPU Adreno 630
Display 1080x2246 LCD
Storage 64/128/256 GB
Memory 6/8 GB
Architecture aarch64
Features
USB Networking
Works
Flashing
Works
Touchscreen
Works
Display
Works
WiFi
Works
FDE
Works
Mainline
Works
Battery
Partial
3D Acceleration
Works
Audio
Works
Bluetooth
Works
Camera
Broken
GPS
Partial
Mobile data
Works
SMS
Works
Calls
Works
USB OTG
Broken
NFC
Unavailable
Sensors
Accelerometer
Broken
Magnetometer
Ambient Light
Proximity
Hall Effect
Barometer
Power Sensor
Misc
Keyboard
Touchpad
USB-A
HDMI/DP
Ir TX
Unavailable
TrustZone
FOSS bootloader



Another great phone based on Qualcomm Snapdragon 845 (SDM845).

How to enter flash mode

You have to press Power + Volume Down to enter the bootloader.

Know your panel variant

There are two variants of the Xiaomi Poco F1 with different display panels and touchscreens.

1. EBBG Panel (and Focaltech touchscreen) - dsi_ebbg_fhd_ft8719_video_display

2. Tianma Panel (and Novatek touchscreen) - dsi_tianma_fhd_nt36672a_video_display


To know your panel variant, get into a terminal with root access (you can use TWRP recovery's terminal as it has root access or rooted android ROM)

1. Run su to make sure you have root access

2. Run cat /proc/cmdline. Output would be similar to:

rcupdate.rcu_expedited=1 console=tty0 earlycon=msm_geni_serial,0xA84000 androidboot.hardware=qcom androidboot.console=ttyMSM0 video=vfb:640x400,bpp=32,memsize=3072000 msm_rtb.filter=0x237 ehci-hcd.park=3 lpm_levels.sleep_disabled=1 service_locator.enable=1 swiotlb=2048 androidboot.configfs=true loop.max_part=7 androidboot.usbcontroller=a600000.dwc3 root=/dev/dm-0 dm="system none ro,0 1 android-verity /dev/sde48" androidboot.verifiedbootstate=orange androidboot.keymaster=1  androidboot.veritymode=enforcing androidboot.bootdevice=1d84000.ufshc androidboot.serialno=b79782d2 androidboot.baseband=sdm msm_drm.dsi_display0=dsi_tianma_fhd_nt36672a_video_display: androidboot.ramdump=disable androidboot.secureboot=1 androidboot.dp=0x0 androidboot.cpuid=0x205772eb androidboot.hwversion=4.19.0 androidboot.hwc=INDIA androidboot.cert=M1805E10A androidboot.hwlevel=MP

4. Note the value of msm_drm.dsi_display0. In the example above, it's dsi_tianma_fhd_nt36672a_video_display, i.e Tianma panel variant. For EBBG panel variant, it would be dsi_ebbg_fhd_ft8719_video_display


During pmbootstrap init, select the kernel variant by choosing either tianma or ebbg based on the output from above.

Installation

1. Run pmbootstrap init and select xiaomi as vendor and beryllium as device.

2. Select the Kernel variant based on the panel noted from the "Know your panel variant" section above.

3. Follow the onscreen instruction and configure as your needs.

Sample output:

[20:23:35] Location of the 'work' path. Multiple chroots (native, device arch, device rootfs) will be created in there.
[20:23:35] Work path [/home/joel/.local/var/pmbootstrap]: 
[20:23:36] NOTE: pmaports path: /home/joel/.local/var/pmbootstrap/cache_git/pmaports
[20:23:36] Choose the postmarketOS release channel.
[20:23:36] Available (3):
[20:23:36] * edge: Rolling release / Most devices / Occasional breakage: https://postmarketos.org/edge
[20:23:36] * stable-next: Latest release / Recommended for best stability
[20:23:36] * stable: Old release (unsupported)
[20:23:36] Channel [edge]: 
[20:23:36] Choose your target device vendor (either an existing one, or a new one for porting).
[20:23:36] Available vendors (59): acer, alcatel, amazon, arrow, asus, bq, chuwi, cubietech, essential, fairphone, finepower, fly, goclever, google, gp, hisense, htc, huawei, infocus, jolla, klipad, lark, leeco, lenovo, lg, medion, meizu, motorola, nextbit, nobby, nokia, nvidia, oneplus, oppo, ouya, pegatron, pine64, planet, purism, qemu, raspberry, samsung, semc, sharp, sony, surftab, t2m, tablet, teclast, tokio, trekstor, vernee, wexler, wiko, wileyfox, xiaomi, yu, zte, zuk
[20:23:36] Vendor [xiaomi]: xiaomi
[20:23:38] Available codenames (23): aries, armani, begonia, beryllium, cactus, cancro, clover, daisy, dior, ferrari, ido, kenzo, lavender, libra, mido, santoni, scorpio, tissot, vince, whyred, willow, wt88047, wt88047-downstream
[20:23:38] Device codename [beryllium]: beryllium
[20:23:42] Which kernel do you want to use with your device?
[20:23:42] Available kernels (2):
[20:23:42] * ebbg: EBBG Panel. To know the status of the port and which panel your device use, Visit the Poco F1 wiki page: https://wiki.postmarketos.org/wiki/Xiaomi_Poco_F1_(xiaomi-beryllium)
[20:23:42] * tianma: Tianma Panel. To know the status of the port and which panel your device use, Visit the Poco F1 wiki page: https://wiki.postmarketos.org/wiki/Xiaomi_Poco_F1_(xiaomi-beryllium)
[20:23:42] Kernel [tianma]: tianma
[20:23:45] This device has proprietary components, which trade some of your freedom with making more peripherals work.
[20:23:45] We would like to offer full functionality without hurting your freedom, but this is currently not possible for your device.
[20:23:45] device-xiaomi-beryllium-nonfree-firmware: GPU, venus, modem firmware
[20:23:45] Enable this package? (y/n) [y]: 

Full Disk Encryption(FDE):

Optionally, If you need FDE -

pmbootstrap install --fde

Flash the kernel and rootfs:

$ pmbootstrap flasher flash_kernel
$ pmbootstrap flasher flash_rootfs --partition userdata


Mainline status

Display

Works fine. MSM DRM based panel.

The Tianma variant is already in mainline Linux.

The EBBG panel variant is available in our kernel fork and works fine, but it is not upstreamed yet.

Brightness can be adjusted. The PMI8998 QCOM WLED driver from mainline is used for brightness adjustment.

Touchscreen

For the Tianma variant, there are patches available for the NT36XXX touchscreen over here: https://lwn.net/ml/linux-kernel/20201028221302.66583-1-kholk11@gmail.com/ Its still not accepted. But works fine with some fixes and included in our fork.

For the EBBG variant, Venji10 has written downstream based driver for focaltech touchscreen. Its not upstreamed yet. Included in our fork and works fine.

3D GPU Acceleration

Since our panels are MSM DRM based, 3D acceleration works perfectly fine using the freedreno driver from mainline.

WiFi

2.4Ghz WiFi connection works perfectly fine. However, 5Ghz WiFi network has poor signal reception. Requires fix.

If you have issues connecting to the wifi, double check dmesg. If the following lines are in dmesg:

[  302.291007] wlan0: authenticate with c0:06:c3:b6:d0:f6
[  302.291066] wlan0: bad VHT capabilities, disabling VHT
[  302.291070] wlan0: 80 MHz not supported, disabling VHT

Then you must change the wifi width from 80 MHz to 20 MHz in your router's settings. The regulatory region gets selected as CN (China) which causes this issue.You can change the regulatory region by following the instructions here: Change regulatory region

Bluetooth

The Bluetooth service crashes on boot and requires a restart in Phosh.

sudo service bluetooth restart

Now you should be able to see the devices show up in Settings->Bluetooth and Pair from the UI.

In case if you want to switch off and on the bluetooth in Phosh, use Settings->Power->Bluetooth toggle and not the Settings->Bluetooth toggle as it doesn't seem to work properly. Requires fix eventually.

Audio

Almost all audio devices work perfectly fine (Speakers, Earpiece, Headphones+Mic, Phone Bottom Mic, Bluetooth headphones+Mic). Except for the Top mic. It doesn't work for some weird reason.

You can change the Audio devices from Settings->Sound.

The userspace ALSA UCM confs are available in our repo: https://gitlab.com/sdm845-mainline/alsa-ucm-conf. Need to be up-streamed eventually.

Headphones+Mic & Phone Internal Mic are already in mainline dts. The TAS2559 driver requires a rewrite and needs to be upstreamed. Included in our fork.

Battery

Caleb and Joel started writing a basic fuel guage driver with basic functionalities such as charge percentage, temperature, usb plug in and out detection, etc. Included in work. Still requires quite some rework to make it generic enough and extensible. Although charging works, there isn't a proper charging driver yet. It would also be needed to enable USB OTG feature.

GPS

In Phosh, using Gnome Maps app, its able to fetch the location data from ModemManager using Geoclue service. But I have not extensively tested, whether the GPS data is coming from WiFi connection data or Mobile Tower CellID or the GPS itself. As far as I have tested, on a fresh rootfs, with a completely new WiFi AP, it's still able to fetch the location correctly. So I think it's not using the WiFi connection details as it's new. This requires testing and verification. But in the end, ModemManager basically supports fetching GPS data through modem. Might require some setup for QRTR maybe.

Camera

Able to configure the CAMSS and camera regulators properly and the IMX363 shows up on the I2C bus. A WIP IMX363 driver written initially by Mis012 is being developed over here: https://gitlab.com/sdm845-mainline/linux/-/commits/wip/sdm845-5.13.rc4-camss/. But currently it returns Broken Pipe error when trying to fetch image from the camera using v4l2-ctl.

The Camera register configurations can be observed by enabling CAMSS debug in downstream android kernel and noting the logs for lines similar to

CAM-CCI: cam_cci_data_queue: 741: cmd_size 24 addr 0x136 data 0x18

Will probably add more info on this in the SDM845 Mainlining wiki later.

The Poco F1 Camera Configuration I have noted so far:


COMMON CONFIG


CAM_IOVDD_EN | gpio50 | tlmm | vreg_s4a_1p8 | 1.8V

CAM_LDO_EN | gpio99 | tlmm | No idea | 1.35V


Front Cam 1 - Samsung S5K3T1 (20MP)


CAM_F1_RSTN | gpio104 | tlmm | -

FRONT_CAM1_AVDD_EN | gpio29 | tlmm | vreg_bob

FRONT_CAM1_DVDD_EN | gpio9 | pmi8998 | vreg_s3a_1p35


Rear Cam 1 - Sony IMX363 (12MP), I2C Address (0x10)


CAM_R1_RSTN | gpio80 | tlmm | -

REAR_CAM1_AVDD_EN | gpio40 | tlmm | vreg_bob | 2.8V

REAR_CAM1_DVDD_EN | gpio11 | pmi8998 | vreg_s3a_1p35 | 1.35V


Front Cam 2 - OV7251 ??


CAM_F2_RSTN | gpio25 | tlmm -

FRONT_CAM2_AVDD_EN | gpio91 | tlmm

FRONT_CAM2_DVDD_EN | gpio7 | tlmm


Rear Cam 2 - Samsung S5K5E8 (5MP)


CAM_R2_RSTN | gpio28 | tlmm -

REAR_CAM2_AVDD_EN | gpio79 | tlmm

REAR_CAM2_DVDD_EN | gpio92 | tlmm


Mobile Data, Calls and SMS

Calls and SMS work fine.

Mobile data can be more tricky. If mobile data does not work (an orange exclamation mark over the cellular icon might indicate this), make sure that you obey the following order:

  • Disable "Mobile Network" and enable Wi-Fi (unclear: Is Internet access needed?).
  • Turn on "Mobile Network" and "Mobile Data", enter your APN when asked and not appearing automatically.

Older documentation

libqmi has support for QRTR+IPA based modems for quite some time, as seen in the repo: https://gitlab.freedesktop.org/mobile-broadband/libqmi/-/merge_requests?scope=all&search=qrtr&state=merged

ModemManager which uses libqmi to control the modem has added support for QRTR recently: https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/merge_requests/470

Inspite of all this, Joel and few other Poco F1 users have mobile data connection issues on some mobile networks. During mobile data connection, it fails with the following errors

[2441]: <info>  [024233428.438170] [modem0/bearer1] couldn't start network: QMI protocol error (14): 'CallFailed'
[2441]: <info>  [024233428.438253] [modem0/bearer1] call end reason (3): generic-no-service

Once reported about it over here: https://gitlab.freedesktop.org/mobile-broadband/libqmi/-/merge_requests/235#note_893224. Still have to properly submit a bug report on this.


Change Kernel parameters

1, sudo vim /etc/deviceinfo

2, Change cmdline parameters to desired state

3, sudo apk fix linux-postmarketos-qcom-sdm845

Community Info

Maintainers

  • Venji10
  • Joel

Users owning this device

  • Abishek (Notes: daily driver running phosh)
  • Anjanmomi (Notes: daily driver running Sxmo)
  • Ash
  • Brittle
  • Clamor (Notes: Tianma panel model)
  • Dferrg
  • Entrider (Notes: Running LineageOS. Daily driver.)
  • Hilledkinged (Notes: EBBG display type)
  • Illen (Notes: daily driver, LineageOS/mainline "dual-boot")
  • Iourine (Notes: with LineageOS)
  • Joel (Notes: Tianma-Panel)
  • Linmob (Notes: Tianma panel)
  • Retourmy (Notes: Tianma panel version)
  • Retr0 (Notes: Daily driver, running LineageOS 18.1 A11 with Magisk, Kali NetHunter installed)
  • Schrmh
  • SergDS
  • Sven (Notes: Running edge with Phosh, EBBG panel and TIANMA panel)
  • The Arjdroid (Notes: (Daily Driver) not running postmarketOS on it but in general it has very good custom ROM and custom Kernel and custom Recovery support so wouldn't be surprised if things run very well.)
  • The DarkFire (Notes: secondary driver / personal phone, mainline)
  • TheBads
  • UnDevDeCatOS (Notes: tianma variant, daily driver)
  • Venji10
  • Wizzdom (Notes: Tianma-Panel, Tinkering with Sxmo)


See also