Qualcomm Snapdragon 820/821 (MSM8996)

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Qualcomm MSM8996
MSM8996 in ceramic capsule
MSM8996 in ceramic capsule
Manufacturer Qualcomm
Name MSM8996
Codenames msmthulium/apqthulium
Architecture aarch64
CPU 2x 2.2/2.3 GHz Kryo, 2x 1.6 GHz Kryo
GPU Adreno 530
Year 2016
Process 14nm
Mainline yes
Components
CPU
Partial
UART
Works
Storage
Partial
USB
Works
Display
Works
GPU
Works
Pinctrl
Works
I²C
Works
Audio
Works
Video
Works
Thermal
Works
WiFi
Unavailable
Bluetooth
Unavailable
Modem
Partial
GPS
Camera
Suspend
Broken


MSM8996/APQ8096 (or Snapdragon 820) is a Qualcomm SoC released in 2016, with great mainline support orginally added for the Dragonboard 820c. There is also a slightly higher clocked (and supposedly less problematic architecture-wise) MSM8996Pro also known as Snapdragon 821.

Devices

APQ8096(SG) (Snapdragon 820E, WiFi-only)

No results

MSM8996 (Snapdragon 820)

Device Codename Mainline
HTC 10 htc-pme
Lenovo ZUK Z2 plus zuk-z2-plus
Lenovo ZUK Z2 Pro zuk-z2-row
LG V20 lg-us996
Xiaomi Mi 5 xiaomi-gemini Y

MSM8996Pro (Snapdragon 821)

Device Codename Mainline
LG G6 lg-h870
OnePlus 3/3T oneplus-oneplus3t Y
Xiaomi Mi Note 2 xiaomi-scorpio Y

Porting to a new device

Getting mainline to boot on MSM8996 devices is generally a straightforward process. Check the mainlining guide to get started:

Icon-numix-light-system-run.svg
MSM8996 Mainlining

Booting

On at least the Xiaomi Mi Note 2, some IOMMU hacks (1, 2) are needed to let it to boot properly. Otherwise it would crash and reboot as soon as the MDP SMMU is probed.

USB

Enabling usb3 or usb2 depending on which one the USB port is connected to should be enough to make USB work, although forcing it to peripheral mode might be needed before adding support for extcon:

MSM8996 USB peripheral mode configuration

&usb3 {
	...

	dwc3@6a00000 {
 	 	dr_mode = "peripheral";
 	 	...
	};
};

Some devices have a USB 2.0 port wired to usb3. In this case it must be limited to high-speed and have usb3phy removed from it:

MSM8996 USB 2.0 configuration

&usb3 {
	/* Disable USB3 pipe_clk requirement */
	qcom,select-utmi-as-pipe-clk;
	...

	dwc3@6a00000 {
		/* usb3-phy is not used on this device */
		phys = <&hsusb_phy1>;
		phy-names = "usb2-phy";

		/* Limit USB to high-speed */
		maximum-speed = "high-speed";
		...
	};
};

Haptics

Haptics are supported, see Haptics for more details.

See also

Who's working on it

Note Please add yourself if you're working on MSM8996 mainlining!