Kernel-4.18.0-80.el8_lbc

  • Chipselect/Local Bus

Properties:

  • name : Should be localbus
  • #address-cells : Should be either two or three. The first cell is the
                 chipselect number, and the remaining cells are the
                 offset into the chipselect.
    
  • #size-cells : Either one or two, depending on how large each chipselect
              can be.
    
  • ranges : Each range corresponds to a single chipselect, and cover
         the entire access window as configured.
    

Example:
localbus@f0010100 {
compatible = “fsl,mpc8272-localbus”,
“fsl,pq2-localbus”;
#address-cells = <2>;
#size-cells = <1>;
reg = <0xf0010100 0x40>;

    ranges = <0x0 0x0 0xfe000000 0x02000000
          0x1 0x0 0xf4500000 0x00008000
          0x2 0x0 0xfd810000 0x00010000>;

    flash@0,0 {
        compatible = "jedec-flash";
        reg = <0x0 0x0 0x2000000>;
        bank-width = <4>;
        device-width = <1>;
    };

    board-control@1,0 {
        reg = <0x1 0x0 0x20>;
        compatible = "fsl,mpc8272ads-bcsr";
    };

    simple-periph@2,0 {
        compatible = "fsl,elbc-gpcm-uio";
        reg = <0x2 0x0 0x10000>;
        elbc-gpcm-br = <0xfd810800>;
        elbc-gpcm-or = <0xffff09f7>;
    };
};