You can access information on how to run USB Type-C functional test cases with and without data validation on the GRL-USB-PD-C2 / C2-EPR from the following documentation:
https://graniteriverlabs1-my.sharepoint.com/personal/qanderson_graniteriverlabs_com/_layouts/15/onedrive.aspx?id=%2Fpersonal%2Fqanderson%5Fgraniteriverlabs%5Fcom%2FDocuments%2FGRL%20Team%20files%2FGRL%20Automation%20SW%20Technical%20Files%2FC2%20%2D%20BLR%20Team%20Data%2FFunctional&ga=1