But seriously, Qualcomm is the worst company ever to work with (except maybe Oracle). They are like a gorilla - they won't budge no matter how hard you push. Every little thing costs licensing money - from documents to tooling. We have a Qualcomm SoC for my current project, and support is abysmal.
They put in a minimal effort to provide support and only after you've completed the onerous requirements to submit a support ticket. It involves retrieving tons of dumps and logs and such using their various Q-tools (which are very buggy and half-baked; many of them cost $25k+/year to license). Most of the time they'll just shrug and say "works on our setup" and refuse to help. We'll spend hundreds of man-hours debugging their crap until we find the issue in their kernel driver and then they won't even acknowledge it was a problem and will say "qmi_wwan is an open source driver. We do not support it." Right, so you expect everyone else to maintain and fix the bugs in qmi_wwan even though virtually ALL of your customers use it and you yourselves rely on it as a critical piece of your development platform. Good one, Qualcomm.