| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | }; |