I have opened an issue here: https://github.com/TechNexion/edm-yocto-bsp/issues/22
but nobody to answer me, so I open here again:
In yocto local.conf I added: DISTRO_FEATURES_append=" optee"
IMAGE_INSTALL_append = " optee-client-imx optee-os-imx-tn optee-test-imx"
config CONFIG_OPTEE in kernel config,but I still can not find the device /dev/tee ?
any suggestion? how can I do? individually to build kernel,boot and rootfs?
ls: cannot access '/dev/tee*': No such file or directory
Run test suite with level=0
TEE test application started with device [(null)]
Failed to open TEE context: 0xffff0008
ERR  TEES:main:663: failed to find an OP-TEE supplicant device
Hello Peter Zhang,
The PICO-PI-IMX7 board is manufactured and supported by TechNexion so you have followed the correct path. I’m glad to see that there were some replies already.
the engineer in TechNexion told me they did not port the source code for PICO-PI-IMX7 . and give me a reference :GitHub - ARMmbed/meta-mbl: Mbed Linux OS (mbl) main repository & OpenEmbedded layers .
that means I need port it by myself. is it complex? or how can I port into TechNexion source code from the refer or from the imx7dsabresd ? please give me some idea. it look like the optee source code can not directly support PICO-PI-IMX7.