GPU on the LS1028A

[rhaas]

I am using an LS1028A processor on an avoinics product. We do not need the GPU for the current project. I plan on turning off the GPU using a PBI command.

My question is about verifying if the GPU is actually off. Can you suggest a mechanism I can use to verify the GPU is actually off. This is needed for certification.

[Oswalag]

Hello,

There isn't a status flag in hardware but you can disable the GPU by the

Device Disable Register 6 (DEVDISR6) 

It is a R/W register so you can read it to verify that it is disabled.