Adding An SPI EEPROM to the Device Tree

        xps_spi_0: xps-spi@84000000 {
            compatible = "xlnx,xps-spi-2.00.b";
            interrupt-parent = <&xps_intc_0>;
            interrupts = < 0 2 >;
            reg = < 0x84000000 0x1000 >;
            xlnx,family = "virtex4";
            xlnx,fifo-exist = <0x1>;
            xlnx,num-ss-bits = <0x1>;
            xlnx,num-transfer-bits = <0x8>;
            xlnx,sck-ratio = <0x20>;
            #address-cells = <1>;
            #size-cells = <0>;
 
            eeprom@0 {
                compatible = "at,at25";
                spi-max-frequency = <100000000>;
                reg = <0>;
                addr-size = <2>;
                page-size = <32>;
                eeprom-size = <1024>;
                eeprom-name = "johnsat25";
            };
        } ;