Release Notes Scarthgap 6.12 v2.0.0
Introduction
Astra™ is Synaptics’ new compute platform designed for the IoT market. It features a series of high-performance, AI-native, multi-modal SoCs optimized for consumer, enterprise, and industrial IoT workloads. These SoCs are equipped with hardware accelerators for edge inferencing, security, graphics, vision, and audio, and offer out-of-the-box functionality with Synaptics’ connectivity solutions.
Astra (v2.0.0) GA Release is a unified software development kit supporting the SL-Series of MPUs.
The high-level components included in this SDK are described below:
Upstream Linux Kernel and device tree.
Low-level Linux device drivers (U-BOOT) for peripheral devices.
Open source code for Multimedia pipelines.
Synaptics proprietary security approach.
Related SDK Documents
All of these items can be found through Synaptics’ and third parties open source Git repositories on GitHub.
Yocto SDK
The Yocto Project is an open-source collaboration project that provides templates, tools and methods for custom Linux-based systems for embedded and IoT products. By leveraging the power of the open-source development community, Synaptics hopes to provide its customers with a wider array of compatible software packages to build their products faster, with more features, while at the same time having the stability and support of a large open-source development project. Additionally, the SDK enables customers who already use a Yocto-based development environment to migrate to Synaptics class-leading silicon solutions for improved performance and additional functionality. The Yocto Project offers a vast number of software packages that provide many options.
Reference Board Supported Scope
Below table lists the supported ASTRA reference board (Machina) and supported scope.
SOC / Reference Board |
Test Validation and Support Scope |
---|---|
SL1680 Core board + IO board |
GA |
SL1640 Core board + IO board |
GA |
SL1620 Core board + IO board |
GA |
License
Using the Astra Software Developer Kit and BSP requires complying with the ASTRA EMBEDDED SOFTWARE DEVELOPMENT KIT LICENSE AGREEMENT –.
Synaptics Proprietary TAs
The following Trusted Applications (TAs) are Synaptics proprietary TAs which run in the OP-TEE Trusted Execution Environment. They are provided in binary format. Synaptics will migrate them into REE and open source the code to the public in a near future releases.
Package |
Notes |
---|---|
SyNAP |
TA SL1680 / SL1640 / SL1620 |
Note
The Vmeta TA was open sourced in release v1.6. Source code can be found at https://github.com/synaptics-astra/tee-optee_dev/tree/scarthgap_6.12_v2.0.0/ta/vpu.
Note
FastLogo and DHUB TAs were open sourced in release v1.7.
Where to get the SDK from GitHub
Images and Toolchains
SDK
https://github.com/synaptics-astra/sdk/tree/scarthgap_6.12_v2.0.0
Documentation
Astra Yocto Linux Developer Guide
For other collaterals please refer to the Synaptics Customer Portal.
New Features
Common New Features
Feature |
SoC |
Description |
OOBE Recipes |
All |
Added recipes to enable the Out-of-Box-Experience image. |
SU-Boot for USB |
All |
Suppport Synaptics U-Boot when booting from USB. |
Enable SWUpdate |
All |
Enable support for OTA using SWUpdate. |
Enable SyNAP |
All |
Enable support for using SyNAP framework with the NPU. |
Enable Gstreamer AI Pipelines |
All |
Support SyNAP based gstreamer plugins. |
Bluetooth SCO |
All |
Added support for Bluetooth SCO link. |
Support MP Flow |
All |
Support provisioning for mass production. |
SELinux |
All |
SELinux is supported (disabled by default). |
Boot from SD Card |
All |
Add support for booting from SD Card. |
Building with Dash Shell |
All |
Update build scripts work with Dash. |
SL1620 New Features
No SL1620 specific features were added in this release.
SL1640 New Features
Feature |
SoC |
Description |
V4L2 AV1 Decoder |
SL1640 and SL1680 |
Support V4l2 AV1 Decoder. |
SL1680 New Features
Feature |
SoC |
Description |
V4L2 AV1 Decoder |
SL1640 and SL1680 |
Support V4l2 AV1 Decoder. |
Dual ISP Sensor Support |
SL1680 |
Add suport for dual ISP sensors. |
HDMI-RX Hotplug |
SL1680 |
Support hot plugging on HDMI-RX. |
SoC Core Feature Summary
This section summarizes the hardware features of Astra Machina SoCs.
Feature |
SoC |
---|---|
2D and 3D Graphics with GPU |
SL1620, SL1640, and SL1680 |
DRM-KMS |
SL1620, SL1640, and SL1680 |
Multi-standard Video Encoding/Decoding |
SL1640 and SL1680 |
Cortex-M core boot |
SL1620, SL1640, and SL1680 |
HIFI4 DSP |
SL1640 |
NPU |
SL1640 and SL1680 |
Security for CPU, BOOT, and DRM engine |
SL1620, SL1640, and SL1680 |
MIPI CSI & ISP |
SL1680 |
Specific Modules and Features
Feature Modules |
Feature Items |
SL1620 |
SL1640 |
SL1680 |
Comment |
---|---|---|---|---|---|
GST Audio Pipeline |
GST Audio Pipeline |
Y |
Y |
Y |
|
BT A2DP Audio |
Y |
Y |
Y |
||
PDM MIC Support |
Y |
N/A |
N/A |
||
SW Decoding Capability |
Y |
Y |
Y |
|
|
File Playback |
Y |
Y |
Y |
|
|
GST Sample Rate Conversion & Mixing |
Y |
Y |
Y |
|
|
HDMI-RX (Audio) |
N/A |
N/A |
Y |
||
Volume Control for USB audio devices |
Y |
Y |
Y |
Supports volume control of USB audio devices using GPIOs |
|
GST Video Pipeline |
HDMI Rx Video Path to Display Sink |
N/A |
N/A |
Y |
|
RTSP stream with V4L2 playback |
N/A |
Y |
Y |
||
Multiview RTSP Playback |
N/A |
N/A |
Y |
||
Support Wayland Sink Window Dragging with mouse |
Y |
Y |
Y |
||
Multi View |
N/A |
N/A |
Y |
||
Video Decode with 2K Wayland Sink |
Y |
Y |
Y |
||
FFMPEG Decode |
Y |
Y |
Y |
||
V4L2 Decode |
N/A |
Y |
Y |
||
Dual Display |
Y |
N/A |
Y |
||
Video Decode with QT Applications |
Y |
Y |
Y |
Multi-playback only on SL1680 |
|
GST AI |
OpenCV Support |
Y |
Y |
Y |
|
Multistream AI with RTSP |
N/A |
N/A |
Y |
||
AI support for ISP Camera |
N/A |
N/A |
Y |
||
GST AI Support for GPU models |
Y |
N/A |
N/A |
||
Pose Estimation |
Y |
Y |
Y |
||
Image Classification |
Y |
Y |
Y |
||
Single View AI use case |
Y |
Y |
Y |
||
Multi View AI user case |
N/A |
N/A |
Y |
|
|
Super Resolution AI use case |
N/A |
N/A |
Y |
||
Face Recognition use case |
N/A |
N/A |
Y |
||
SR Slideshow |
N/A |
N/A |
Y |
||
SyNAP |
Y |
Y |
Y |
|
|
HDMI-RX |
HDMI-RX 4K |
N/A |
N/A |
Y |
|
DHUB TA in OP-TEE |
N/A |
N/A |
Y |
||
HDIM-Rx Video 2K all formats support |
N/A |
N/A |
Y |
||
GST Pipeline Support |
N/A |
N/A |
Y |
||
HDMI-Rx Driver for Video – 2K60 |
N/A |
N/A |
Y |
||
YUYV and NV12 formats as VIP output |
N/A |
N/A |
Y |
||
EDID Support |
N/A |
N/A |
Y |
||
VIP Scalar |
N/A |
N/A |
Y |
||
RGB, YUV444/422/420 – 12/10/8 bit input |
N/A |
N/A |
Y |
||
Gstreamer v4l2src pipeline to Display |
N/A |
N/A |
Y |
||
DRM-KMS |
Fastlogo with OP-TEE |
Y |
Y |
Y |
Supports both HDMI and MIPI |
HDMI Hot Plug Detect and Dynamic Resolution Change |
N/A |
Y |
Y |
||
EDID parsing |
N/A |
Y |
Y |
||
MIPI, HDMI on Astra Machina boards |
Y |
Y |
Y |
|
|
Display |
Wayland Display Server |
Y |
Y |
Y |
|
V4L2 ISP |
Dual / Single Sensor V4L2 ISP Driver |
N/A |
N/A |
Y |
|
Support for 4K input and output |
N/A |
N/A |
Y |
||
Support for downscaling of the inputs |
N/A |
N/A |
Y |
||
Support cropping in ISP down scaler |
N/A |
N/A |
Y |
||
Supports Bayer and RGB formats |
N/A |
N/A |
Y |
||
Support Simultaneous Path Playback w/ Single Sensor |
N/A |
N/A |
Y |
||
Direct Sensor(MCM) output for ISP bypass |
N/A |
N/A |
Y |
||
U-Boot |
EMMC HS400 support |
Y |
Y |
Y |
|
SL1620 1G DDR4 x 16 support |
Y |
N/A |
N/A |
||
DVFS Support |
Y |
Y |
Y |
VCPU DVFS can be supported on SL1620/SL1640/SL1680 VCORE DVFS is only supported on SL1640 |
|
U-BOOT v1.1.1 |
Y |
Y |
Y |
||
General peripherals support |
Y |
Y |
Y |
|
|
Boot mode: from eMMC |
Y |
Y |
Y |
|
|
Boot mode: from SD-CARD |
Y |
Y |
Y |
||
Image Upgrade |
Y |
Y |
Y |
|
|
Low Power Standby |
N/A |
Y |
Y |
||
OP-TEE |
OP-TEE enabled |
Y |
Y |
Y |
|
WIFI |
WIFI 6 & WIFI 6E |
Y |
Y |
Y |
wpa_supplicant 2.11 |
Host AP mode using hostapd |
Y |
Y |
Y |
||
Bluetooth |
Supported |
Y |
Y |
Y |
General Modules, Peripherals, and Interfaces Supported
General |
|
---|---|
Kernel |
Kernel Version 6.12.11 |
Yocto |
Scarthgap: 5.0.9 |
U-Boot |
SPI U-Boot version: v1.1.1 USB SU-Boot version: v1.7 *Synaptics U-Boot based on U-Boot 2025.01 |
USB Tool |
astra-update: 1.0.5 |
OP-TEE |
OP-TEE version: 4.5.0 |
Gstreamer (GST) |
GST version: 1.22.12 |
ISP Firmware |
version: 6.5.1 |
Memory |
|||
---|---|---|---|
Memory - DDR |
SL1620 |
DDR3 |
1GB 1866 Mbps |
2GB 1866 Mbps |
|||
4GB 1866 Mbps |
|||
DDR4 |
1GB 2133 Mbps |
||
2GB 2133 Mbps |
|||
4GB 2133 Mbps |
|||
DDR4x16 |
1GB 2133 Mbps |
||
2GB 2133 Mbps |
|||
SL1640 |
DDR4 |
1GB 3200 Mbps |
|
2GB 2400 / 2666 / 3200 Mbps |
|||
4GB 3200 Mbps |
|||
DDRx16 |
1GB 3200 Mbps |
||
2GB 3200 Mbps |
|||
LPDDR4 |
2GB 3733 Mbps |
||
3GB 3733 Mbps |
|||
4GB 3733 Mbps |
|||
LPDDR4x |
3733 Mbps |
||
3GB 3733 Mbps |
|||
4GB 3733 Mbps |
|||
SL1680 |
LPDDR4 |
2GB 3733 Mbps |
|
3GB 3733 Mbps |
|||
4GB 3733 Mbps |
|||
LPDDR4x |
2GB 3200 / 3733 Mbps |
||
3GB 3200 / 3733 Mbps |
|||
4GB 3733 Mbps |
|||
Memory - eMMC |
up to 32GB |
General Peripherals |
|
---|---|
Interrupt |
GIC |
Clock |
Controls the system frequency and clock tree distribution |
Timer |
|
GPIO |
GPIO is initialized in earlier phase according to hardware design |
SDMA |
Conforms to the DMA engine framework |
UART |
|
USB 2.0 (OTG) |
|
USB 3.0 (Host) |
|
I2C |
|
SPI |
Network |
|
---|---|
Ethernet |
SL1620: 10 / 100 / 1000 Mbps SL1640: 10 / 100 Mbps SL1680: 10 /100 / 1000 Mbps |
Wireless Connectivity |
Supports WIFI & BT |
GPU and Display |
|
---|---|
GPU |
|
Direct Rendering Manager (DRM) Display |
|
RGB Parallel Output |
Supported on SL1620 |
HDMI-TX |
Supported on SL1620/SL1640/SL1680 |
HDMI-RX |
Supported on SL1680 |
MIPI-DSI |
SL1680/SL1640/SL1620. On SL1640 it needs to be enabled via DTS |
Camera |
|
---|---|
MIPI-CSI |
SL1680 |
ISP |
SL1680 |
Audio Interfaces |
|
---|---|
PDM |
SL1620 |
SPDIF |
None |
I2S |
SL1620, SL1640, SL1680 |
Supported Camera Modules
Sensor |
Module |
Resolution |
Interface (Device Tree Overlay if Required) |
Notes |
---|---|---|---|---|
IMX258 |
Synaptics IMX258 Camera Module |
3840x2160 30fps (mode 0) 1920x1080 30fps (mode 1) |
MIPI-CSI 0 w/ dolphin-csi0-with-expander.dtbo |
Synaptics SL1680 MIPI CSI Adaptor Board Required |
IMX415 |
Synaptics IMX415 Camera Module |
3840x2160 30fps (mode 0) 1920x1080 30fps (mode 1) |
MIPI-CSI 0 w/ dolphin-csi0-with-expander.dtbo |
Synaptics SL1680 MIPI CSI Adaptor Board Required |
OV5647 |
640x480 60fps (mode 0) 1920x1080 30fps (mode 1) |
MIPI-CSI0 |
1920x1080 30fps output is non-calibrated |
|
MIPI-CSI 1 w/ dolphin-csi1-without-expander.dtbo |
||||
IMX477 |
3840x2160 30fps (mode 0) |
MIPI-CSI0 |
Single Sensor Support Only 3840x2160 30fps output is non-calibrated |
|
MIPI-CSI 1 w/ dolphin-csi1-without-expander.dtbo |
Known Issues and Limitations
Note
Versions of U-Boot included in the Astra SDK v0.9.0 release are not compatible with Astra SDK releases v1.0 or later. Please ensure that you are using USB Tool v1.0 or later when flashing using USB. Or U-Boot v1.0.0 or later when updating with internal SPI flash. See Updating Internal SPI Flash Images using U-Boot for instructions on updating the internal SPI flash.
Note
U-Boot version v1.1.0 improves emmc flash times significantly. We recommend updating to U-Boot v1.1.0 to benefit from these improvements.
Note
SD Boot with release v1.3 and later requires updating to U-Boot v1.1.1 or later. See Updating Internal SPI Flash Images using U-Boot for instructions on updating the internal SPI flash.
Note
In Astra v1.3, the default display output for the SL1620 is set to HDMI via a DSI-to-HDMI conversion. Starting with Astra v1.4, the onboard DSI-to-HDMI converter for the SL1620 Rev D core module has been enabled. For older core modules, an external DSI-to-HDMI adapter board is required. The default display output can be switched to MIPI by following the instructions provided in the User Guides. Haier Panel Configuration Guide and Waveshare Panel Configuration Guide.
Note
In Astra v1.4, the default MIPI display on SL1680 was changed to the Waveshare 7” Panel.
Note
In Astra v1.4, ISP IOMMU only supports the NV12 format. When using RGB888 format, set the v4l2src parameters extra-controls="c,mmu_enable=0"
to disable IOMMU.
Note
In Astra v1.5, the rootfs partition sizes increased to accommodate the extra packages in the OOBE images. This interferes with OTA since SWUpdate expects the rootfs partition size to be the same. To perform OTA on a system with v1.4 installed, please build an image using v1.4’s partition sizes. (See eMMC Partition Customization on Astra Machina)
Note
Network Manager can be supported in Astra 1.7, but it’s disabled by default as there are some stability issues found. If needed, Network Manager can be enabled. Please, contact the Synaptics Astra support team for more information.
Note
SyNAP AI features are NOT currently available in the Astra Scarthgap v2.0.0 Alpha release. SyNAP will be included in a future release.
Known Issues
SL1620 |
SL1640 |
SL1680 |
Module |
ID |
Summary |
---|---|---|---|---|---|
Y |
N/A |
N/A |
Gstreamer Pipeline |
36035 |
Camera display flickers and then crashes after 2 - 3 mins of 2K output with 4K USB Camera. |
Y |
N/A |
N/A |
Audio |
29228 |
arecord prints “Sample format is non-available” when recording DMIC input set to 16 and 24. |
Y |
N/A |
N/A |
Chromium |
31549 |
Microsoft Teams participant video is not visible when using the Chromium browser. |
Y |
N/A |
N/A |
Display |
34580 |
Observed garbage output on TFT panel after reboot. |
Y |
N/A |
N/A |
Display |
34979 |
Inverted colors observed when playing secret_640x480.264 with live555MediaServer on TFT Panel. |
Y |
N/A |
N/A |
Gstreamer Pipeline |
35025 |
No Audio observed while playing WEBM file with playbin. |
Y |
Y |
Y |
Linux Kernel |
35126 |
Framebuffer Console is unresponsive. |
Y |
N/A |
N/A |
Power Management |
35192 |
HDMI display shows garbage when doing Suspend / Resume. |
Y |
Y |
Y |
Graphics |
35221 |
The library libvulkan.so.1 is missing. |
Y |
N/A |
N/A |
Display |
35376 |
Observed corrupted output when pushing frame to GFX1 and PIP planes @AR24. |
Y |
N/A |
N/A |
Display |
35522 |
Garbage observed while doing reboot. |
Y |
N/A |
N/A |
Linux Kernel |
35584 |
Ethernet not working after Wake On Lan. |
Y |
N/A |
N/A |
BT and WiFi |
35662 |
No WiFi of Bluetooth observed in Settings. |
Y |
N/A |
N/A |
Gstreamer Pipeline |
35803 |
Freezes and gray screen observed during FFMPEG decoding test with IP camera. |
Y |
N/A |
N/A |
Audio |
35805 |
Observed corrupted files while recording DMIC cases with 32bit / 24bit / 16bit PCM with AAC content. |
Y |
N/A |
N/A |
Linux Kernel |
35817 |
New windows open in the background it not opened fullscreen. |
Y |
N/A |
N/A |
Display |
35865 |
Weston dual display application control is not working. |
Y |
N/A |
N/A |
Display |
35866 |
Wrong colors observed while playing MP4_AVC_AC3.mp4 on TFT panel. |
Y |
N/A |
N/A |
U-Boot |
35972 |
Garbaged observed on TFT display when booting from internal SPI flash. |
Y |
N/A |
N/A |
Gstreamer Pipeline |
35981 |
Labels are not being displayed when doing image classification using FFMPEG. |
Y |
N/A |
N/A |
Video Player Demo |
35982 |
Syna Video Player UI has incorrect alignment. |
Y |
N/A |
N/A |
Gstreamer Pipeline |
35990 |
Error displayed when recording with a USB mic. “WARNING: erroneous pipeline: could not link audioconvert0 to avenc_mp2-0” |
Y |
N/A |
N/A |
OOBE |
35992 |
FingerPaint demo is not working as expected. |
Y |
N/A |
N/A |
OOBE |
35993 |
Observed video freeze when playing URL streams using Syna Dash Player. |
Y |
N/A |
N/A |
OOBE |
35994 |
GFX Demo app UI goes to background when opening. |
Y |
N/A |
N/A |
Audio |
35995 |
Observed corrupted files while recording USB mic cases with 8KHz / 16KHz / 44KHz
|
Y |
N/A |
N/A |
Gstreamer Pipeline |
35997 |
Observed stuck video while testing RTSP decodebin H264 Case. |
Y |
N/A |
N/A |
Display |
35998 |
Applications open on TFT panel when started on the 7.1 MIPI panel. |
N/A |
Y |
N/A |
OOBE |
36032 |
Available WiFi networks dropdown jumps to first position when scrolling down. |
N/A |
Y |
Y |
Display |
35749 |
Observed video has slight frame drop when playing VP9 encoded video at 3840x2026 and vorbis audio track. |
N/A |
Y |
N/A |
Linux Kernel |
35778 |
Ethernet interface randomly fails to get IP address address after reboot. |
N/A |
Y |
Y |
Gstreamer Pipeline |
35944 |
Video does not play smoothly when running multi-display testcase. |
N/A |
Y |
N/A |
Linux Kernel |
35948 |
Reboot is delayed at “A stop job is running for Modem Manager” for a few minutes. |
N/A |
Y |
N/A |
OOBE |
35949 |
The video mixer use case does not fill the whole screen. |
N/A |
N/A |
Y |
Gstreamer Pipeline |
36031 |
Super Resolution use case is displaying a horizontal line when using a camera when super resolution is disabled. |
N/A |
N/A |
Y |
OOBE |
33670 |
Getting Started Video Stream won’t finish unless you move mouse after clicking close. |
N/A |
N/A |
Y |
ISP |
34950 |
Output shows green and noise artifacts when testing OV5647 sensor. |
Y |
Y |
Y |
Fastlogo |
35039 |
Fastlogo TA and AVIO failed while suspending. |
N/A |
N/A |
Y |
Graphics |
35143 |
Unexpected output on HDMI display after stopping weston. |
N/A |
N/A |
Y |
Gstreamer Pipeline |
35288 |
Video shakes when playing 4 videos using Syna Video Player with V4L2 decoding. |
Y |
Y |
Y |
SyNAP |
35470 35482 35788 |
Lots of warnings in the serial console with “__get_user_pages” message when running SyNAP. |
N/A |
N/A |
Y |
HDMI-RX |
35502 |
Channel mapping is wrong when testing audio with QD980 4K30 RGB at 1080p30Hz with NV12 & 48k, S32_LE,8 channel using alsasink. |
N/A |
N/A |
Y |
HDMI-RX |
35507 |
Audio glitch can be heard when testing UYVY format with HDMI-RX playback and dump. |
N/A |
Y |
Y |
SyNAP |
35510 |
Some usecases report an error when running offline tests. |
N/A |
N/A |
Y |
HDMI-RX |
35511 |
HDMI-RX output is displayed partially on HDMI and MIPI displays when doing HDMI-TX hotplug testing. |
N/A |
N/A |
Y |
ISP |
35770 |
Screen shows garbage flash at the beginning of test when testing IMX415 sensors main and sp2 paths. |
N/A |
N/A |
Y |
ISP |
35792 |
Display shows excessive green when testing OV5647 sensor with 1080P output. |
N/A |
N/A |
Y |
ISP |
35797 |
Display shows excessive blue when testing IMX477 with CSI-0 and CSI-1 port. |
N/A |
N/A |
Y |
ISP |
35815 |
Display shows excessive purple when testing IMX477 in dark environments. |
N/A |
N/A |
Y |
Display |
35912 |
Weston dual display application control can not work. |
N/A |
N/A |
Y |
HDMI-RX |
35965 |
Met error print during HDMI-RX audio playback. |
N/A |
N/A |
Y |
Display |
35966 |
Waveshare 7.1 inch MIPI panel screen shaking when disable / enable Weston service. |