Agilex™ 7 SoC FPGA Boot User Guide

ID 683389
Date 8/28/2024
Public
Document Table of Contents

A.3. BOOT_SCRATCH_COLD2

Boot Scratch Register Agilex™ 7 F/I-Series Agilex™ 7 M-Series
Boot_Scratch_Cold2
Bits[31:0] Reserved for storing the frequency of the F2S clock input to HPS.
  • Usage:
    • U-Boot:
      • arch/arm/mach-socfpga/wrap_pll_config_soc64.c: cm_get_fpga_clk_hz() sets this register to the value from the handoff information when in SPL, then returns the value. When in U-Boot, it simply returns the value from this register.