clock/clock-tree.json

{
  "clockTree": [
    {
      "name": "REF_CLK",
      "source": "X1",
      "frequency": "26MHz",
      "tolerance": "±30ppm",
      "destinations": ["U1 PLL", "U2 clock controller"],
      "divider": 1
    },
    {
      "name": "CPU_CLK",
      "source": "U1 PLL",
      "frequency": "600MHz",
      "destinations": ["U1 ARM core"],
      "divider": 1,
      "pll": {
        "multiply": 23,
        "divide": 1,
        "output_divide": 1
      }
    },
    {
      "name": "DDR_CLK",
      "source": "U1 PLL",
      "frequency": "266MHz",
      "destinations": ["U2 SDRAM"],
      "divider": 2
    },
    {
      "name": "UART_CLK",
      "source": "REF_CLK",
      "frequency": "26MHz",
      "destinations": ["UART0", "UART1"],
      "divider": 1
    },
    {
      "name": "SPI_CLK",
      "source": "REF_CLK",
      "frequency": "26MHz",
      "destinations": ["SPI0", "SPI1"],
      "divider": 1
    }
  ]
}