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Linux/AM5718: How to disable autosuspend

Part Number: AM5718

Tool/software: Linux

In customer system, find the IPU auto disabled/can't connect JTAG sometimes, Finally get to know it is controlled by autosuspend_delay_ms set in ARM Linux side, and it is default to 10ms.

Question:

#1. Why has this feature to auto suspend IPU?

#2. Does it also auto suspend DSP?

#3. How to disable this feature?