[FAQ] AM2612: Changing AM261x CPU core frequency

When using GEL-based development with 400MHz device (instead of 500MHz device).

The current ccs_base/emulation/gel/AM261x/AM261x_PLL/AM261x_Peripheral_Clocks.gel expects 500MHz PLL configuration.

TI will provide updates for the following files:

• AM261x_Peripheral_Clocks.gel (Equivalent to the current .gel file)
  
  • Adding 400MHzPLL Clock Configuration functions for:
    • ELM
    • GPMC
    • CPTS
    • MCSPI
    • TRACE
• AM261x.gel (Updated to dynamically utilize 400MHz or 500MHz Peripheral Clock configuration functions based on device type)

Refer to the steps below to ensure the latest Device Support Files are available in CCS.

If SDK-based development is used, the peripheral clock configuration will be taken care of by the SYSCONFIG Generated Source ti_power_clock_config.c file in the SDK examples based on the TI DPL → Clock → R5 Clock Frequency Setting as shown below:

If downloading Code Composer Studio for the first time from https://www.ti.com/tool/download/CCSTUDIO/.

Note: If possible, download the on-demand (web) installer option instead of the single-file (offline) installer. This allows CCS to grab the latest Device Support Data available.

If the single-file (offline) installer is required, the user must follow the additional steps defined below in "If using a previously downloaded version of Code Composer Studio".

1. Follow initial setup steps.
2. During the "Select Components" step, ensure that the Sitara AM2x MCUs component is selected to install the latest available AM261x Device Support data with CCS.

If using a previously downloaded version of Code Composer Studio:

Note: TI recommends upgrading to the latest version of CCS.

1. Open the existing Code Composer Studio application.
2. Navigate to "Help" → "Check for Updates..." in the application title bar.
3. Ensure that the AM2x Arm®-based MCU Device Feature Support file uses the latest "Current" version.
   1. If not, select the check box to install the "Current" version option.