Set up SOF on MinnowBoard Turbot¶

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:

Install the RD-2012.5 version of Xtensa tools from Xplorer.
Download the Xtensa core config for BYT.
Save the core config tarball (Intel_HiFiEP_linux.tgz) in your <xtensa-tools-root>/XtDevTools/downloads directory.

Unzip and install the tarball.

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

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:

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

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.

Build deb package.
```
make -j8 && make -j8 deb-pkg
```
Package all the *.deb files for MinnowBoard, and install all deb files.
```
dpkg -i \*.deb
```
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:

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

Move .aml and .efi files to EFI directory.

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

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.

Set up SOF on MinnowBoard Turbot¶

MinnowBoard resources ¶

About Turbot ¶

Schematic ¶

BIOS ¶