SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
In order to disable the APLL_PCIE, the user needs to disable PCIe_SSx (where x = 1 or 2) using the CM_PCIE_PCIESSx_CLKCTRL[1:0] MODULEMODE registers. When PCIe_SS is disabled, the PRCM module automatically disables the APLL_PCIE. Please note that setting CM_CLKMODE_APLL_PCIE[1:0] MODE_SELECT bitfield to 0x0 does not disable the APLL_PCIE.
The APLL_PCIE can be set in different modes during operation. PRCM triggers APLL_PCIE state transitions to different static modes by setting the bit field of the PRCM.CM_CLKMODE_APLL_PCIE[1:0] MODE_SELECT. Only two static modes are available for APLL_PCIE:
For more information see Power, Reset, and Clock Management.