According to this blog, it would not be possible to use the i.MX8M processor and HDMI without a proprietary blobs :
- The i.MX8(M) boot ROM searches for an NXP-signed HDMI firmware image before even attempting to boot the main cores. If it does not find this image, or it is not signed, the HDMI block will be locked until next reset.
- Therefore, it is impossible to ever replace the HDMI blob used by this device. The device could be used without this blob, but you then forego use of the HDMI (or DisplayPort) functionality.
Is this true?