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SpacemiT Key Stone K1

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SpacemiT Key Stone K1
M1
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
Components
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

Matrix channel

#SpacemiT:matrix.org

Blok diagram

See also