SPRACL7 March 2019 AM5746 , AM5748 , AM5749
Operating performance points (OPP) levels define a max frequency per fixed voltage level in each voltage domain. Table 1 lists the frequency of each subsystem per OPP for the AM574x processor.
Dynamic Voltage Frequency Scaling (DVFS) refers to a software technique where the system-on-chip (SoC) supplies with AVS support are changed from one OPP level (voltage and frequency pair) to another to either adapt to a changing work-load, or to avoid device operation outside of desired temperature bounds.
This SoC only supports DVFS on the MPU domain. For DSP and GPU domains, the OPP levels must be set during boot by the initial bootloader. Ensure that the selected OPP level meets the needs of the application and all thermal testing is conducted at the desired OPP level.
Voltage Domain | Clock Domain | OPP_NOM | OPP_OD | OPP_HIGH |
---|---|---|---|---|
Maximum Frequency (MHz) | Maximum Frequency (MHz) | Maximum Frequency (MHz) | ||
VD_MPU | MPU_CLK | 1000 | 1176 | 1500 |
VD_DSP | DSP_CLK | 600 | 700 | 750 |
EVE_FCLK | 535 | 650 | 650 | |
VD_IVA | IVA_GCLK | 388.3 | 430 | 532 |
VD_GPU | GPU_CLK | 425.6 | 500 | 532 |
VD_CORE | DDR3 / DDR3L | 667 (DDR3-1333) | N/A | N/A |
CORE_IPUx_CLK | 212.8 | N/A | N/A | |
L3_CLK | 266 | N/A | N/A | |
VD_RTC | RTC_FCLK | 0.034 | N/A | N/A |