Protect script when ram_freq is not set Safely load PSCI DTO to enable CPUidle driver: psci_idle The PSCI DTO shall only be applied if TF-A & Crust support CPU idle states [0]. Otherwise the CPU usage will be at 100%. This will not be visible in top, lead to overheating and battery drain. Worst case scenario would lead to a fried chip if the CPU thermal_zone does not work or is not enabled in DTS. [0] https://gitlab.com/postmarketOS/pmaports/-/issues/1901#note_1238456920
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postmarketOS aports
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