Kernel-4.18.0-80.el8_aspeed-scu

The Aspeed System Control Unit manages the global behaviour of the SoC,
configuring elements such as clocks, pinmux, and reset.

Required properties:

  • compatible: One of:

      "aspeed,ast2400-scu", "syscon", "simple-mfd"
      "aspeed,g4-scu", "syscon", "simple-mfd"
      "aspeed,ast2500-scu", "syscon", "simple-mfd"
      "aspeed,g5-scu", "syscon", "simple-mfd"
    
  • reg: contains the offset and length of the SCU memory region

  • #clock-cells: should be set to <1> - the system controller is also a
    clock provider

  • #reset-cells: should be set to <1> - the system controller is also a
    reset line provider

Example:

syscon: syscon@1e6e2000 {
compatible = “aspeed,ast2400-scu”, “syscon”, “simple-mfd”;
reg = <0x1e6e2000 0x1a8>;
#clock-cells = <1>;
#reset-cells = <1>;
};