libretech-cc

Kernel Recipes: Mainline Linux on AML-S905X-CC: Le Potato

At Kernel Recipes this year, BayLibre was proud to partner with the Libre Computer Project to give away around 30 “Le Potato” boards to attendees.  Kernel Recipes is already known for its throw microphone, but this year each speaker threw a “Le Potato” board at the audience.

For those who received the board, pre-built images (to be written to a microSD card, at least 4Gb) are available here :

What works:

  • Quad-Core Cortex-A53 @ 1.5GHz with Dynamic Voltage and Frequency Scaling (DVFS)
  • Penta-Core Mali-450 MP3 GPU limited to X11 (experimental) and Framebuffer acceleration
  • RS-232 TTL serial console on UART header and 40-pin header using DT Overlay
  • microSDCard SD/SDHC/SDXC up to SDR104 (UHS-I) speed
  • Optional eMMC 5.1 up to HS200 speed
  • SDIO up to SDR104 on 40-pin header
  • I2C, SPI, PWM, ADC on 40-pin header
  • Infrared Receiver
  • Hardware Watchdog
  • Up to 100Mb Full Duplex Ethernet
  • 4x USB2.0 Type A ports
  • 480i/576i CVBS Analog Output on AV Jack
  • Up to 1080p60 Full HD Output with CEC and Stereo Digital Audio

What doesn’t work (yet) :

  • 4k2k HDMI 2.0a modes, 7.1 and compressed Digital Audio
  • Mali-450 MP3 GPU Acceleration for Wayland
  • Analog and 7.1 I2S Digital audio output
  • Hardware Accelerated Video decoding/encoding for H.264/H.265/VP9

How to build and boot your own kernel from mainline:

For Overlays support, please follow the steps on https://github.com/libre-computer-project/libretech-overlays/blob/for-4.13.y/README.md

For Questions, please find us on the IRC channel #linux-amlogic (on Freenode) or ask questions on linux-amlogic@lists.infradead.org