1 /*
2 * Device Tree Source for IBM Embedded PPC 476 Platform
3 *
4 * Copyright 2010 Torez Smith, IBM Corporation.
5 *
6 * Based on earlier code:
7 * Copyright (c) 2006, 2007 IBM Corp.
8 * Josh Boyer <jwboyer@linux.vnet.ibm.com>, David Gibson <dwg@au1.ibm.com>
9 *
10 * This file is licensed under the terms of the GNU General Public
11 * License version 2. This program is licensed "as is" without
12 * any warranty of any kind, whether express or implied.
13 */
14
15 /dts-v1/;
16
17 / {
18 #address-cells = <2>;
19 #size-cells = <1>;
20 model = "ibm,iss-4xx";
21 compatible = "ibm,iss-4xx";
22 dcr-parent = <&{/cpus/cpu@0}>;
23
24 aliases {
25 serial0 = &UART0;
26 };
27
28 cpus {
29 #address-cells = <1>;
30 #size-cells = <0>;
31
32 cpu@0 {
33 device_type = "cpu";
34 model = "PowerPC,4xx"; // real CPU changed in sim
35 reg = <0x00000000>;
36 clock-frequency = <100000000>; // 100Mhz :-)
37 timebase-frequency = <100000000>;
38 i-cache-line-size = <32>; // may need fixup in sim
39 d-cache-line-size = <32>; // may need fixup in sim
40 i-cache-size = <32768>; /* may need fixup in sim */
41 d-cache-size = <32768>; /* may need fixup in sim */
42 dcr-controller;
43 dcr-access-method = "native";
44 };
45 };
46
47 memory {
48 device_type = "memory";
49 reg = <0x00000000 0x00000000 0x00000000>; // Filled in by zImage
50 };
51
52 UIC0: interrupt-controller0 {
53 compatible = "ibm,uic-4xx", "ibm,uic";
54 interrupt-controller;
55 cell-index = <0>;
56 dcr-reg = <0x0c0 0x009>;
57 #address-cells = <0>;
58 #size-cells = <0>;
59 #interrupt-cells = <2>;
60
61 };
62
63 UIC1: interrupt-controller1 {
64 compatible = "ibm,uic-4xx", "ibm,uic";
65 interrupt-controller;
66 cell-index = <1>;
67 dcr-reg = <0x0d0 0x009>;
68 #address-cells = <0>;
69 #size-cells = <0>;
70 #interrupt-cells = <2>;
71 interrupts = <0x1e 0x4 0x1f 0x4>; /* cascade */
72 interrupt-parent = <&UIC0>;
73 };
74
75 plb {
76 compatible = "ibm,plb-4xx", "ibm,plb4"; /* Could be PLB6, doesn't matter */
77 #address-cells = <2>;
78 #size-cells = <1>;
79 ranges;
80 clock-frequency = <0>; // Filled in by zImage
81
82 POB0: opb {
83 compatible = "ibm,opb-4xx", "ibm,opb";
84 #address-cells = <1>;
85 #size-cells = <1>;
86 /* Wish there was a nicer way of specifying a full 32-bit
87 range */
88 ranges = <0x00000000 0x00000001 0x00000000 0x80000000
89 0x80000000 0x00000001 0x80000000 0x80000000>;
90 clock-frequency = <0>; // Filled in by zImage
91 UART0: serial@40000200 {
92 device_type = "serial";
93 compatible = "ns16550a";
94 reg = <0x40000200 0x00000008>;
95 virtual-reg = <0xe0000200>;
96 clock-frequency = <11059200>;
97 current-speed = <115200>;
98 interrupt-parent = <&UIC0>;
99 interrupts = <0x0 0x4>;
100 };
101 };
102 };
103
104 nvrtc {
105 compatible = "ds1743-nvram", "ds1743", "rtc-ds1743";
106 reg = <0 0xEF703000 0x2000>;
107 };
108 iss-block {
109 compatible = "ibm,iss-sim-block-device";
110 reg = <0 0xEF701000 0x1000>;
111 };
112
113 chosen {
114 stdout-path = "/plb/opb/serial@40000200";
115 };
116 };
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