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   1 /*
   2  * Device Tree Source for IBM Walnut
   3  *
   4  * Copyright 2007 IBM Corp.
   5  * Josh Boyer <jwboyer@linux.vnet.ibm.com>
   6  *
   7  * This file is licensed under the terms of the GNU General Public
   8  * License version 2.  This program is licensed "as is" without
   9  * any warranty of any kind, whether express or implied.
  10  */
  11
  12 /dts-v1/;
  13
  14 / {
  15         #address-cells = <1>;
  16         #size-cells = <1>;
  17         model = "ibm,walnut";
  18         compatible = "ibm,walnut";
  19         dcr-parent = <&{/cpus/cpu@0}>;
  20
  21         aliases {
  22                 ethernet0 = &EMAC;
  23                 serial0 = &UART0;
  24                 serial1 = &UART1;
  25         };
  26
  27         cpus {
  28                 #address-cells = <1>;
  29                 #size-cells = <0>;
  30
  31                 cpu@0 {
  32                         device_type = "cpu";
  33                         model = "PowerPC,405GP";
  34                         reg = <0x00000000>;
  35                         clock-frequency = <200000000>; /* Filled in by zImage */
  36                         timebase-frequency = <0>; /* Filled in by zImage */
  37                         i-cache-line-size = <32>;
  38                         d-cache-line-size = <32>;
  39                         i-cache-size = <16384>;
  40                         d-cache-size = <16384>;
  41                         dcr-controller;
  42                         dcr-access-method = "native";
  43                 };
  44         };
  45
  46         memory {
  47                 device_type = "memory";
  48                 reg = <0x00000000 0x00000000>; /* Filled in by zImage */
  49         };
  50
  51         UIC0: interrupt-controller {
  52                 compatible = "ibm,uic";
  53                 interrupt-controller;
  54                 cell-index = <0>;
  55                 dcr-reg = <0x0c0 0x009>;
  56                 #address-cells = <0>;
  57                 #size-cells = <0>;
  58                 #interrupt-cells = <2>;
  59         };
  60
  61         plb {
  62                 compatible = "ibm,plb3";
  63                 #address-cells = <1>;
  64                 #size-cells = <1>;
  65                 ranges;
  66                 clock-frequency = <0>; /* Filled in by zImage */
  67
  68                 SDRAM0: memory-controller {
  69                         compatible = "ibm,sdram-405gp";
  70                         dcr-reg = <0x010 0x002>;
  71                 };
  72
  73                 MAL: mcmal {
  74                         compatible = "ibm,mcmal-405gp", "ibm,mcmal";
  75                         dcr-reg = <0x180 0x062>;
  76                         num-tx-chans = <1>;
  77                         num-rx-chans = <1>;
  78                         interrupt-parent = <&UIC0>;
  79                         interrupts = <
  80                                 0xb 0x4 /* TXEOB */
  81                                 0xc 0x4 /* RXEOB */
  82                                 0xa 0x4 /* SERR */
  83                                 0xd 0x4 /* TXDE */
  84                                 0xe 0x4 /* RXDE */>;
  85                 };
  86
  87                 POB0: opb {
  88                         compatible = "ibm,opb-405gp", "ibm,opb";
  89                         #address-cells = <1>;
  90                         #size-cells = <1>;
  91                         ranges = <0xef600000 0xef600000 0x00a00000>;
  92                         dcr-reg = <0x0a0 0x005>;
  93                         clock-frequency = <0>; /* Filled in by zImage */
  94
  95                         UART0: serial@ef600300 {
  96                                 device_type = "serial";
  97                                 compatible = "ns16550";
  98                                 reg = <0xef600300 0x00000008>;
  99                                 virtual-reg = <0xef600300>;
 100                                 clock-frequency = <0>; /* Filled in by zImage */
 101                                 current-speed = <9600>;
 102                                 interrupt-parent = <&UIC0>;
 103                                 interrupts = <0x0 0x4>;
 104                         };
 105
 106                         UART1: serial@ef600400 {
 107                                 device_type = "serial";
 108                                 compatible = "ns16550";
 109                                 reg = <0xef600400 0x00000008>;
 110                                 virtual-reg = <0xef600400>;
 111                                 clock-frequency = <0>; /* Filled in by zImage */
 112                                 current-speed = <9600>;
 113                                 interrupt-parent = <&UIC0>;
 114                                 interrupts = <0x1 0x4>;
 115                         };
 116
 117                         IIC: i2c@ef600500 {
 118                                 compatible = "ibm,iic-405gp", "ibm,iic";
 119                                 reg = <0xef600500 0x00000011>;
 120                                 interrupt-parent = <&UIC0>;
 121                                 interrupts = <0x2 0x4>;
 122                         };
 123
 124                         GPIO: gpio@ef600700 {
 125                                 compatible = "ibm,gpio-405gp";
 126                                 reg = <0xef600700 0x00000020>;
 127                         };
 128
 129                         EMAC: ethernet@ef600800 {
 130                                 device_type = "network";
 131                                 compatible = "ibm,emac-405gp", "ibm,emac";
 132                                 interrupt-parent = <&UIC0>;
 133                                 interrupts = <
 134                                         0xf 0x4 /* Ethernet */
 135                                         0x9 0x4 /* Ethernet Wake Up */>;
 136                                 local-mac-address = [000000000000]; /* Filled in by zImage */
 137                                 reg = <0xef600800 0x00000070>;
 138                                 mal-device = <&MAL>;
 139                                 mal-tx-channel = <0>;
 140                                 mal-rx-channel = <0>;
 141                                 cell-index = <0>;
 142                                 max-frame-size = <1500>;
 143                                 rx-fifo-size = <4096>;
 144                                 tx-fifo-size = <2048>;
 145                                 phy-mode = "rmii";
 146                                 phy-map = <0x00000001>;
 147                         };
 148
 149                 };
 150
 151                 EBC0: ebc {
 152                         compatible = "ibm,ebc-405gp", "ibm,ebc";
 153                         dcr-reg = <0x012 0x002>;
 154                         #address-cells = <2>;
 155                         #size-cells = <1>;
 156                         /* The ranges property is supplied by the bootwrapper
 157                          * and is based on the firmware's configuration of the
 158                          * EBC bridge
 159                          */
 160                         clock-frequency = <0>; /* Filled in by zImage */
 161
 162                         sram@0,0 {
 163                                 reg = <0x00000000 0x00000000 0x00080000>;
 164                         };
 165
 166                         flash@0,80000 {
 167                                 compatible = "jedec-flash";
 168                                 bank-width = <1>;
 169                                 reg = <0x00000000 0x00080000 0x00080000>;
 170                                 #address-cells = <1>;
 171                                 #size-cells = <1>;
 172                                 partition@0 {
 173                                         label = "OpenBIOS";
 174                                         reg = <0x00000000 0x00080000>;
 175                                         read-only;
 176                                 };
 177                         };
 178
 179                         nvram@1,0 {
 180                                 /* NVRAM and RTC */
 181                                 compatible = "ds1743-nvram";
 182                                 #bytes = <0x2000>;
 183                                 reg = <0x00000001 0x00000000 0x00002000>;
 184                         };
 185
 186                         keyboard@2,0 {
 187                                 compatible = "intel,82C42PC";
 188                                 reg = <0x00000002 0x00000000 0x00000002>;
 189                         };
 190
 191                         ir@3,0 {
 192                                 compatible = "ti,TIR2000PAG";
 193                                 reg = <0x00000003 0x00000000 0x00000010>;
 194                         };
 195
 196                         fpga@7,0 {
 197                                 compatible = "Walnut-FPGA";
 198                                 reg = <0x00000007 0x00000000 0x00000010>;
 199                                 virtual-reg = <0xf0300005>;
 200                         };
 201                 };
 202
 203                 PCI0: pci@ec000000 {
 204                         device_type = "pci";
 205                         #interrupt-cells = <1>;
 206                         #size-cells = <2>;
 207                         #address-cells = <3>;
 208                         compatible = "ibm,plb405gp-pci", "ibm,plb-pci";
 209                         primary;
 210                         reg = <0xeec00000 0x00000008    /* Config space access */
 211                                0xeed80000 0x00000004    /* IACK */
 212                                0xeed80000 0x00000004    /* Special cycle */
 213                                0xef480000 0x00000040>;  /* Internal registers */
 214
 215                         /* Outbound ranges, one memory and one IO,
 216                          * later cannot be changed. Chip supports a second
 217                          * IO range but we don't use it for now
 218                          */
 219                         ranges = <0x02000000 0x00000000 0x80000000 0x80000000 0x00000000 0x20000000
 220                                   0x01000000 0x00000000 0x00000000 0xe8000000 0x00000000 0x00010000>;
 221
 222                         /* Inbound 2GB range starting at 0 */
 223                         dma-ranges = <0x42000000 0x0 0x0 0x0 0x0 0x80000000>;
 224
 225                         /* Walnut has all 4 IRQ pins tied together per slot */
 226                         interrupt-map-mask = <0xf800 0x0 0x0 0x0>;
 227                         interrupt-map = <
 228                                 /* IDSEL 1 */
 229                                 0x800 0x0 0x0 0x0 &UIC0 0x1c 0x8
 230
 231                                 /* IDSEL 2 */
 232                                 0x1000 0x0 0x0 0x0 &UIC0 0x1d 0x8
 233
 234                                 /* IDSEL 3 */
 235                                 0x1800 0x0 0x0 0x0 &UIC0 0x1e 0x8
 236
 237                                 /* IDSEL 4 */
 238                                 0x2000 0x0 0x0 0x0 &UIC0 0x1f 0x8
 239                         >;
 240                 };
 241         };
 242
 243         chosen {
 244                 linux,stdout-path = "/plb/opb/serial@ef600300";
 245         };
 246 };