Set up SOF on MinnowBoard Turbot

MinnowBoard resources

About Turbot

https://minnowboard.org/minnowboard-turbot/technical-specs

Schematic

https://minnowboard.org/minnowboard-turbot/documentation

BIOS

We recommend using the latest version.

https://firmware.intel.com/projects/minnowboard-max

Development

Hardware Rework & Connect External Audio Codec

• Realtek ALC5651

• Dialog DA7212

Update BIOS and Insert OEM Key

MinnowBoard does not need key signing, so no OEM key is needed.

Install Linux

Install Ubuntu: https://minnowboard.org/tutorials/installing-ubuntu-lts/

Set Up SOF

Please follow the build from scratch instructions for generic set up steps.

Set up Xtensa config to build with xt-xcc:

1. Install the RD-2012.5 version of Xtensa tools from Xplorer.

2. Download the Xtensa core config for BYT.

3. Save the core config tarball (Intel_HiFiEP_linux.tgz) in your <xtensa-tools-root>/XtDevTools/downloads directory.

4. Unzip and install the tarball.

   tar xvzf Intel\_HiFiEP\_linux.tgz
   cd Intel\_HiFiEP
   ./install
   

5. When prompted, enter the Xtensa tools directory.

   <xtensa-tools-root>/XtDevTools/install/tools/RD-2012.5-linux/XtensaTools
   

After you have built and setup SOF:

1. Copy the*sof-byt.ri* to /lib/firmware/intel/ on Minnow Turbot FS

2. Clone the Sound Open Firmware firmware tools from git://git.alsa-project.org/sound-open-firmware-tools.git and select a topology file like one of the following:

   test-ssp2-passthrough-s16le-s16le-48k-codec.tplg
   test-ssp2-passthrough-s24le-s24le-48k-codec.tplg
   test-ssp2-volume-s16le-s16le-48k-codec.tplg
   test-ssp2-volume-s24le-s24le-48k-codec.tplg
   

   Note

   We only support pass-through topology in SOF 1.0.

3. Copy the topology file to /lib/firmware/intel/ as sof-byt-“codec name”.tplg (e.g. sof-byt-rt5651.tplg) to the Minnow Turbot FS.

UCM

Pierre Bossart provides a UCM repository that supports both headset mode and line in/out mode.

You can also use alsactl to restore a recommended asound.state file for the amixer setting.

asound.state files: user@bee:/git/audio/reef/board-int

Kernel build

Kernel update

Repo: https://github.com/plbossart/sound.git

Branch: heads/topic/sof-v4.14

1. Select the machine and codec driver in kernel config

   Device Drivers > Sound card support > Advanced Linux Sound Architecture > ALSA for SoC audio support
   

   Make sure ASoC SOF Baytrail and codec RT5651/DA7212 are selected.

   

2. Build deb package.

   make -j8 && make -j8 deb-pkg
   

3. Package all the *.deb files for MinnowBoard, and install all deb files.

   dpkg -i \*.deb
   

4. Reboot your system.

EFI API

Repo: https://github.com/plbossart/MinnowBoardMaxFirmware.git

Clone the repo and build the source code.

Note

AudioSsdtUpdate.efi and associated .aml files are avaible as pre-compiled binaries under X64/

Steps:

1. Create a startup.nsh file in /boot/efi/

   vim startup.nsh
   

   Add the following:

   fs0:
   cd EFI
   AudioSsdtUpdate.efi "codecname".aml(like RT5651.aml or DA7212.aml)
   cd ubuntu
   grubx64.efi
   

2. Move .aml and .efi files to EFI directory.

   cp \*.aml /boot/efi/EFI
   cp AudioSsdtUpdate.efi /boot/efi/EFI
   

3. Configure the BIOS.

   • From the BIOS press F2.

   • Select the EFI Internal Shell as primary boot option: Boot-Maintenance Manager -> Boot Options -> Change Boot Order

   • Press F10 to save and exit.

   EFI shell will automatically run the startup.nsh shell script.