0001 /*
0002 * Device Tree Source for IBM Embedded PPC 476 Platform
0003 *
0004 * Copyright 2010 Torez Smith, IBM Corporation.
0005 *
0006 * Based on earlier code:
0007 * Copyright (c) 2006, 2007 IBM Corp.
0008 * Josh Boyer <jwboyer@linux.vnet.ibm.com>, David Gibson <dwg@au1.ibm.com>
0009 *
0010 * This file is licensed under the terms of the GNU General Public
0011 * License version 2. This program is licensed "as is" without
0012 * any warranty of any kind, whether express or implied.
0013 */
0014
0015 /dts-v1/;
0016
0017 /memreserve/ 0x01f00000 0x00100000;
0018
0019 / {
0020 #address-cells = <2>;
0021 #size-cells = <1>;
0022 model = "ibm,iss-4xx";
0023 compatible = "ibm,iss-4xx";
0024 dcr-parent = <&{/cpus/cpu@0}>;
0025
0026 aliases {
0027 serial0 = &UART0;
0028 };
0029
0030 cpus {
0031 #address-cells = <1>;
0032 #size-cells = <0>;
0033
0034 cpu@0 {
0035 device_type = "cpu";
0036 model = "PowerPC,4xx"; // real CPU changed in sim
0037 reg = <0>;
0038 clock-frequency = <100000000>; // 100Mhz :-)
0039 timebase-frequency = <100000000>;
0040 i-cache-line-size = <32>;
0041 d-cache-line-size = <32>;
0042 i-cache-size = <32768>;
0043 d-cache-size = <32768>;
0044 dcr-controller;
0045 dcr-access-method = "native";
0046 status = "okay";
0047 };
0048 cpu@1 {
0049 device_type = "cpu";
0050 model = "PowerPC,4xx"; // real CPU changed in sim
0051 reg = <1>;
0052 clock-frequency = <100000000>; // 100Mhz :-)
0053 timebase-frequency = <100000000>;
0054 i-cache-line-size = <32>;
0055 d-cache-line-size = <32>;
0056 i-cache-size = <32768>;
0057 d-cache-size = <32768>;
0058 dcr-controller;
0059 dcr-access-method = "native";
0060 status = "disabled";
0061 enable-method = "spin-table";
0062 cpu-release-addr = <0 0x01f00100>;
0063 };
0064 cpu@2 {
0065 device_type = "cpu";
0066 model = "PowerPC,4xx"; // real CPU changed in sim
0067 reg = <2>;
0068 clock-frequency = <100000000>; // 100Mhz :-)
0069 timebase-frequency = <100000000>;
0070 i-cache-line-size = <32>;
0071 d-cache-line-size = <32>;
0072 i-cache-size = <32768>;
0073 d-cache-size = <32768>;
0074 dcr-controller;
0075 dcr-access-method = "native";
0076 status = "disabled";
0077 enable-method = "spin-table";
0078 cpu-release-addr = <0 0x01f00200>;
0079 };
0080 cpu@3 {
0081 device_type = "cpu";
0082 model = "PowerPC,4xx"; // real CPU changed in sim
0083 reg = <3>;
0084 clock-frequency = <100000000>; // 100Mhz :-)
0085 timebase-frequency = <100000000>;
0086 i-cache-line-size = <32>;
0087 d-cache-line-size = <32>;
0088 i-cache-size = <32768>;
0089 d-cache-size = <32768>;
0090 dcr-controller;
0091 dcr-access-method = "native";
0092 status = "disabled";
0093 enable-method = "spin-table";
0094 cpu-release-addr = <0 0x01f00300>;
0095 };
0096 };
0097
0098 memory {
0099 device_type = "memory";
0100 reg = <0x00000000 0x00000000 0x00000000>; // Filled in by zImage
0101
0102 };
0103
0104 MPIC: interrupt-controller {
0105 compatible = "chrp,open-pic";
0106 interrupt-controller;
0107 dcr-reg = <0xffc00000 0x00030000>;
0108 #address-cells = <0>;
0109 #size-cells = <0>;
0110 #interrupt-cells = <2>;
0111
0112 };
0113
0114 plb {
0115 compatible = "ibm,plb-4xx", "ibm,plb4"; /* Could be PLB6, doesn't matter */
0116 #address-cells = <2>;
0117 #size-cells = <1>;
0118 ranges;
0119 clock-frequency = <0>; // Filled in by zImage
0120
0121 POB0: opb {
0122 compatible = "ibm,opb-4xx", "ibm,opb";
0123 #address-cells = <1>;
0124 #size-cells = <1>;
0125 /* Wish there was a nicer way of specifying a full 32-bit
0126 range */
0127 ranges = <0x00000000 0x00000001 0x00000000 0x80000000
0128 0x80000000 0x00000001 0x80000000 0x80000000>;
0129 clock-frequency = <0>; // Filled in by zImage
0130 UART0: serial@40000200 {
0131 device_type = "serial";
0132 compatible = "ns16550a";
0133 reg = <0x40000200 0x00000008>;
0134 virtual-reg = <0xe0000200>;
0135 clock-frequency = <11059200>;
0136 current-speed = <115200>;
0137 interrupt-parent = <&MPIC>;
0138 interrupts = <0x0 0x2>;
0139 };
0140 };
0141 };
0142
0143 nvrtc {
0144 compatible = "ds1743-nvram", "ds1743", "rtc-ds1743";
0145 reg = <0 0xEF703000 0x2000>;
0146 };
0147 iss-block {
0148 compatible = "ibm,iss-sim-block-device";
0149 reg = <0 0xEF701000 0x1000>;
0150 };
0151
0152 chosen {
0153 stdout-path = "/plb/opb/serial@40000200";
0154 };
0155 };
