Etnaviv issues on i.MX8M-Mini

[Schrempf Frieder]

Hi,

according to the documents, the i.MX8M-Mini features a GC320 and a 
GCNanoUltra. I tried to run the etnaviv drivers and the following GPUs 
are detected:

	etnaviv-gpu 38000000.gpu: model: GC600, revision: 4653
	etnaviv-gpu 38008000.gpu: model: GC520, revision: 5341

Running some demos and tests with mesa 19.1.6 most things seem to work. 
Still I currently have two issues, while the first one is kind of a 
show-stopper and the second one is not really important as it seems to 
affect shaders only.

1. When running any QtQuick applications, all transformations like 
moving elements are really jerky and not smooth at all as it should be. 
Any ideas what the reason could be, or how to get more information about 
this problem?

2. With some demos (e.g. with 'glmark2-es2-drm -b terrain') I get:

	error: compile failed!
	etna_draw_vbo:222: compiled shaders are not okay

Can this be fixed somehow, or is this due to the limitations of the GPU?

Thanks,
Frieder