Qualcomm Snapdragon 8s Gen 3/7+ Gen 3 (Palawan/Lamma)

Qualcomm Snapdragon 7+ Gen 3
	; SM7675 in ceramic package
Manufacturer	Qualcomm
Name	Snapdragon 7+ Gen 3
Model	SM7675
Codenames	cliffs7 / lamma
Architecture	aarch64
CPU	1× 2.8 GHz Cortex-X4 ; 4× 2.6 GHz Cortex-A720 ; 3× 1.9 GHz Cortex-A520
GPU	Adreno 732; (950MHz)
NPU	Hexagon
Year	2024
Process	4nm
Mainline	Yes
Community Page A link to a git{hub,lab} organisation/repo where development happens.	https://codeberg.org/palawan-mainline

Components
CPU SMP (bring up secondary CPU cores), CPU frequency scaling, CPUidle	Works
UART	Works
Storage eMMC, SD cards, UFS, ...	Works
USB	Works
Display	Works
GPU	Works
Pinctrl	Works
I²C	Works
SPI Serial Peripheral Interface	Works
Audio	Partial
Video Hardware-accelerated video de/encoding	Works
Thermal	Works
Wi-Fi	Broken
Bluetooth	Broken
Modem Calls, SMS, Internet	Broken
GPS	Untested
Camera	Untested
NPU Neural Processing Unit	Untested
Suspend	Untested
PCI/PCIE	Untested

Qualcomm Snapdragon 8s Gen 3
	; SM8635 in ceramic package
Manufacturer	Qualcomm
Name	Snapdragon 8s Gen 3
Model	SM8635
Codenames	cliffs / palawan
Architecture	aarch64
CPU	1× 3.0 GHz Cortex-X4 ; 4× 2.8 GHz Cortex-A720 ; 3× 2.0 GHz Cortex-A520
GPU	Adreno 735; (1100MHz)
NPU	Hexagon
Year	2024
Process	4nm
Mainline	Yes
Community Page A link to a git{hub,lab} organisation/repo where development happens.	https://codeberg.org/palawan-mainline

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

Components
CPU SMP (bring up secondary CPU cores), CPU frequency scaling, CPUidle	Works
UART	Works
Storage eMMC, SD cards, UFS, ...	Works
USB	Works
Display	Works
GPU	Works
Pinctrl	Works
I²C	Works
SPI Serial Peripheral Interface	Works
Audio	Partial
Video Hardware-accelerated video de/encoding	Works
Thermal	Works
Wi-Fi	Untested
Bluetooth	Untested
Modem Calls, SMS, Internet	Untested
GPS	Untested
Camera	Untested
NPU Neural Processing Unit	Untested
Suspend	Untested
PCI/PCIE	Untested

Background

TODO: Find out an information about 'palawan25'

Snapdragon 8s Gen 3 (SM8635) and Snapdragon 7+ Gen 3 (SM7675) are Qualcomm SoCs released in 2024. Snapdragon 7+ Gen 3 (SM7675) seems to be just a mid-range underclocked version of Snapdragon 8s Gen 3 (SM8635), which presents itself as more "streamlined" revision of Snapdragon 8 Gen 3 (SM8650). Internal msm codenames for these platforms are palawan (SM8635) and lamma (SM7675), and HLOS names are cliffs (SM8635) and cliffs7 (SM7675), and both of them belong to pineapple family.

Devices

Snapdragon 8s Gen 3 (SM8635)

Device	Codename	Category
Motorola Razr+ 2024	motorola-arcfox
Qualcomm QRD8635	qualcomm-qrd8635
Xiaomi Pad 7 Pro	xiaomi-muyu
Xiaomi POCO F6 / Redmi Turbo 3	xiaomi-peridot

Snapdragon 7+ Gen 3 (SM7675)

Device	Codename	Category
Xiaomi Pad 7	xiaomi-uke

Differences between chipsets

WARNING: Even though SM8635 and SM7675 are quite similar with SM8650 the mainline kernel fork requires SIGNIFICANT rework!

Judging by the kernel sources, kernel.org discussions and obtained SoC datasheets, SM8635 and SM7675 (in the future will be addressed as "palawans") are built on Snapdragon 7 Gen 3 (SM7550-AB) SoC base (judging by the main PMIC being "PM7550", which is named "PMXR2230" in the kernel sources and was used in SoCs like SM7550-AB, SM7635(-AC), SM6650 and SXR2230). CPU clusters were taken from Snapdragon 8 Gen 3 and Adreno GPU is a trimmed version of Snapdragon X Plus (X1-45) one.

On the other hand, differences between palawans themselves are almost 0. Main difference is that SM7675 has lower clock speeds (both CPU and GPU) than SM8635 and has slightly different Last Level Cache Controller (LLCC) setup, with smaller LLCC_ISLAND1 slice than SM8635. You can look up SoC device tree source here

Mainline

Lastly these platforms were mentioned in 6.1 Android kernel. In 6.6 Android kernel and newer, all mentions of cliffs / cliffs7 platforms were dropped. Current mainlining is being done by community only so far.