SpacemiT Key Stone K1
Appearance
	
	
| Manufacturer | SpacemiT | 
|---|---|
| Name | Key Stone K1 / M1 | 
| Architecture | riscv64 | 
| CPU | 8x SpacemiT X60 @ 1.6 / 2.0 GHz | 
| GPU | IMG BXE-2-32 | 
| Year | 2024 | 
| Process | 22nm | 
| Community Page A link to a git{hub,lab} organisation/repo where development happens. | https://www.workswithriscv.guide/wiki/hardware/K1 | 
| CPU SMP (bring up secondary CPU cores), CPU frequency scaling, CPUidle | Works | 
|---|---|
| UART | Works | 
| Storage eMMC, SD cards, UFS, ... | Partial | 
| USB | Works | 
| Display | Works | 
| GPU | Untested | 
| Pinctrl | Untested | 
| I²C | Untested | 
| SPI Serial Peripheral Interface | Untested | 
| Audio | Untested | 
| Video Hardware-accelerated video de/encoding | Untested | 
| Thermal | Untested | 
| Camera | Untested | 
| NPU Neural Processing Unit | Untested | 
| Suspend | Untested | 
| Ethernet | Works | 
The SpacemiT Key Stone K1/M1 is a RISC-V SoC by Chinese chip designer SpacemiT released in 2024. Very early mainline support was added in Summer 2024.
The SoC consists of two clusters of 4 SpacemiT X60 cores each and features support for the RISC-V Vector Extension 1.0.
Bootloader
SpacemiT provides a U-Boot fork, a buildable version can be found here. The provided U-Boot uses proprietary blobs. There is an ongoing effort to add support for the K1 SoC in oreboot here.
Devices
SpacemiT K1/M1
| Device | Codename | Category | Booting | 
|---|---|---|---|
| Banana Pi BPI-F3 | bananapi-bpi-f3 | Yes | |
| DeepComputing DC-ROMA Laptop II | dc-roma-laptop-ii | No | |
| DeepComputing DC-ROMA PAD II | deepcomputing-dc-roma-pad-ii | testing | Yes | 
| Milk-V Jupiter | milkv-jupiter | No | |
| Sipeed Lichee Pi 3A | sipeed-licheepi3a | No | |
| SpacemiT MUSE Book | spacemit-muse-book | No | 
Ky X1
| Device | Codename | Category | Booting | 
|---|---|---|---|
| Xunlong Orange Pi RV2 | orangepi-rv2 | No | 
