[TF-M] independent device driver model working along side SPM

Hi,

Is there a design guideline available for device driver which is working on secure side alongside SPM. I do not want to plug my driver in TF-M due to latency considerations.

Basically my plan is to introduce non secure callable veneers for calling the interfaces of the driver which I am introducing.

Any thoughts on this will be helpful.

Regards

Manoj