PINE64 PinePhone Pro (pine64-pinephonepro)

The PinePhone Pro is the second version of the PinePhone, adding in an rk3399 SoC just like the other Pro-series products from PINE64. If you have a Developer Edition, make sure to read PINE64 PinePhone Pro Development.
=== Contributors ===
* MartijnBraam
* ollieparanoid
== Users owning this device ==
== Installing Tow-Boot on the SPI ==
Since 2022-03, the supported way to run postmarketOS on the PinePhone Pro is with Tow-Boot flashed to the SPI. See this post for reasoning. Once installed, the plan is to upgrade Tow-Boot from within postmarketOS (and other distributions) through fwupd, though that is not yet implemented.
=== Explorer Edition / Development Edition ===
While we expect that future revisions of the PinePhone Pro will come with Tow-Boot pre-installed, you will need to install it yourself for the Explorer Edition and Development Edition.
Download the latest Tow-Boot release for the PinePhone Pro from the releases page, then follow the "Installing to SPI" instructions in the official manual.
If you have the Developer Edition, one way to get it to boot from SD card in order to install Tow-Boot is nuking the factory AOSP installation.
== Installing postmarketOS ==
=== Without encryption ===
==== External storage (microSD card) ====
To quickly try out postmarketOS, download an image and flash it onto an SD card.
After that, unplug the microSD card from your PC, put it in your PinePhone Pro. Turn it on, and wait until Tow-Boot lets the phone vibrate for the first time. Press the volume down button, until shortly after it vibrated for the second time. The LED color will change to aqua, and stay in this color for a few more seconds with a black screen. Then the postmarketOS loading screen should boot up. If the LED is blinking, then boot from SD failed.
==== Internal storage (eMMC) ====
Run lsblk on your PC to see available storage devices. Connect your PinePhone Pro to your PC with an USB cable. Turn it on, and wait until Tow-Boot lets the phone vibrate for the first time. Press the volume up button, until shortly after it vibrated for the second time. The LED color will change to blue, indicating that it is now in USB Mass Storage mode.
Run lsblk again and note which device appeared, this is the eMMC of your PinePhone Pro. Now perform the same installation steps as for SD card below, but specify the path to your PinePhone's eMMC as target device (for dd or pmbootstrap install --fde --sdcard=). When done, hold the power button for 5 seconds. The PinePhone Pro should reboot into the postmarketOS installation (without pressing a volume button during boot, eMMC is default).
=== With full disk encryption ===
Build a custom image with pmbootstrap, using pmbootstrap install --fde.
== Serial console ==
The PinePhone Pro has the standard PINE64 serial port in the headphone connector, it's activated by the 6th contact on the DIP switch. If the switch is on then the headphone connector is in audio mode, if it's off then it's in UART mode.
The uart is 1500000n8
The pinout for the serial connector on the headphone jack is:
* Tip: RX
* Ring: TX
* Sleeve: GND
The serial connection is 3.3V
You can also buy the debug cable from PINE64 Store.
The store cable uses a 4 ring plug, as seen in the PDF, but a 3 ring plug works just as well.
== Hardware switches ==
There's a 6 contact DIP switch on the back of the phone underneath the back cover. The 6 switches are for enabling/disabling hardware components. The switch has tiny numbers 1-6 beneath the contacts, moving the contact up sets that contact on. 
#	Off 	On
1	Modem disabled 	Modem enabled
2	Wifi/BT disabled 	Wifi/BT enabled
3	Microphone disabled 	Microphone enabled
4	Rear camera disabled 	Rear camera enabled
5	Front camera disabled	Front camera enabled
6	Headphone UART mode 	Headphone audio mode
== Expansion port ==
There is a 2x3 grid of pogo pins on the back of the PinePhone for connecting a back cover with extra hardware like an extended battery case or a keyboard case. The pinout for this connector:
Interrupt	SDA 	SCL
5V / VBUS	VBAT	GND
The VBUS pin is powered by USB and is 5V. The second power pin is VBAT, which connects to the battery voltage. The I2C and interrupt lines have pull-ups on the phone side. The I2C lines are pulled up to 3V3 by the phone.
== Components ==
Component 	Model 	Driver
Touchscreen 	Goodix GT917S 	TOUCHSCREEN_GOODIX
Rear camera 	IMX 258 	CONFIG_VIDEO_IMX258
Camera flash 	Awinic AW3641EDNR 	?
Front camera 	OmniVision OV8858 	?
LCD 	Himax HX8394 compatible	CONFIG_DRM_PANEL_SITRONIX_ST7703
WiFi 	Ampak AP6335 	CONFIG_B43_SDIO
Bluetooth 	Ampak AP6335 	?
Modem 	Quectel EC25-G 	USB_NET_QMI_WWAN
GNSS/GPS 	Quectel EC25-G 	CONFIG_USB_SERIAL_OPTION
Notification LED 	LED0603RGB 	LEDS_GPIO
Ambient Light and Proximity Sensor	STK3311-A 	?
== Battery fully drained bootloop ==
When the pinephone pro's battery is fully drained, it will go into a boot loop. If you have not installed tow-boot, follow the instructions on the Pine64 wiki to recover from this battery drained state:
https://wiki.pine64.org/wiki/PinePhone_Pro#The_battery_is_fully_drained
If tow-boot is installed, follow the following procedure to recover from a battery fully drained bootloop:
# Remove any microSD card from the phone
# Remove the battery
# Reinsert the battery
# Plug the phone into power charger while holding volume up
The phone will have a blue led lit and is charging. Leave the phone charging overnight.
== Camera ==
Both cameras work with Snapshot/GNOME Camera (packaged in Alpine), and Megapixels 2.x (Not currently released). Unfortunately, the back camera stops working after first suspend currently.
== See also ==
* : pine64-pinephonepro: switch to UEFI booting
* pine64-pinephonepro camera debugging
* Install postmarketOS on a single or mutiple distribution enviroment, rk2aw pre-loader, and U-Boot bootloaders. More info on Multi-distribution image
* pinephone_modem_sdk, a project to build custom firmware images for the modem.