Re: Hardly unexpected
>Not having source for the GPU driver doesn't stop most IoT developers (no SoC that I'm aware of has open GPU drivers,
The i.mx6 can now run Android with no binary blobs.
>and x86 systems with open GPU drivers normally significantly underperform the OEM BLOB).
Intel's drivers are opensource and they are the OEM.
>Not having source or correct details to make it talk to external devices
>through the likes of GPIO, SPI, I2C etc does.
Many of the parts people use for IoT don't have decent datasheets and the existing driver in the SDK is the only reference. One part I have worked with had massive useful features totally undocumented in the datasheet yet had code to support them in the SDK.