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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 / {
  13         #address-cells = <1>;
  14         #size-cells = <1>;
  15         model = "ibm,walnut";
  16         compatible = "ibm,walnut";
  17         dcr-parent = <&/cpus/cpu@0>;
  18
  19         aliases {
  20                 ethernet0 = &EMAC;
  21                 serial0 = &UART0;
  22                 serial1 = &UART1;
  23         };
  24
  25         cpus {
  26                 #address-cells = <1>;
  27                 #size-cells = <0>;
  28
  29                 cpu@0 {
  30                         device_type = "cpu";
  31                         model = "PowerPC,405GP";
  32                         reg = <0>;
  33                         clock-frequency = <bebc200>; /* Filled in by zImage */
  34                         timebase-frequency = <0>; /* Filled in by zImage */
  35                         i-cache-line-size = <20>;
  36                         d-cache-line-size = <20>;
  37                         i-cache-size = <4000>;
  38                         d-cache-size = <4000>;
  39                         dcr-controller;
  40                         dcr-access-method = "native";
  41                 };
  42         };
  43
  44         memory {
  45                 device_type = "memory";
  46                 reg = <0 0>; /* Filled in by zImage */
  47         };
  48
  49         UIC0: interrupt-controller {
  50                 compatible = "ibm,uic";
  51                 interrupt-controller;
  52                 cell-index = <0>;
  53                 dcr-reg = <0c0 9>;
  54                 #address-cells = <0>;
  55                 #size-cells = <0>;
  56                 #interrupt-cells = <2>;
  57         };
  58
  59         plb {
  60                 compatible = "ibm,plb3";
  61                 #address-cells = <1>;
  62                 #size-cells = <1>;
  63                 ranges;
  64                 clock-frequency = <0>; /* Filled in by zImage */
  65
  66                 SDRAM0: memory-controller {
  67                         compatible = "ibm,sdram-405gp";
  68                         dcr-reg = <010 2>;
  69                 };
  70
  71                 MAL: mcmal {
  72                         compatible = "ibm,mcmal-405gp", "ibm,mcmal";
  73                         dcr-reg = <180 62>;
  74                         num-tx-chans = <1>;
  75                         num-rx-chans = <1>;
  76                         interrupt-parent = <&UIC0>;
  77                         interrupts = <
  78                                 b 4 /* TXEOB */
  79                                 c 4 /* RXEOB */
  80                                 a 4 /* SERR */
  81                                 d 4 /* TXDE */
  82                                 e 4 /* RXDE */>;
  83                 };
  84
  85                 POB0: opb {
  86                         compatible = "ibm,opb-405gp", "ibm,opb";
  87                         #address-cells = <1>;
  88                         #size-cells = <1>;
  89                         ranges = <ef600000 ef600000 a00000>;
  90                         dcr-reg = <0a0 5>;
  91                         clock-frequency = <0>; /* Filled in by zImage */
  92
  93                         UART0: serial@ef600300 {
  94                                 device_type = "serial";
  95                                 compatible = "ns16550";
  96                                 reg = <ef600300 8>;
  97                                 virtual-reg = <ef600300>;
  98                                 clock-frequency = <0>; /* Filled in by zImage */
  99                                 current-speed = <2580>;
 100                                 interrupt-parent = <&UIC0>;
 101                                 interrupts = <0 4>;
 102                         };
 103
 104                         UART1: serial@ef600400 {
 105                                 device_type = "serial";
 106                                 compatible = "ns16550";
 107                                 reg = <ef600400 8>;
 108                                 virtual-reg = <ef600400>;
 109                                 clock-frequency = <0>; /* Filled in by zImage */
 110                                 current-speed = <2580>;
 111                                 interrupt-parent = <&UIC0>;
 112                                 interrupts = <1 4>;
 113                         };
 114
 115                         IIC: i2c@ef600500 {
 116                                 compatible = "ibm,iic-405gp", "ibm,iic";
 117                                 reg = <ef600500 11>;
 118                                 interrupt-parent = <&UIC0>;
 119                                 interrupts = <2 4>;
 120                         };
 121
 122                         GPIO: gpio@ef600700 {
 123                                 compatible = "ibm,gpio-405gp";
 124                                 reg = <ef600700 20>;
 125                         };
 126
 127                         EMAC: ethernet@ef600800 {
 128                                 linux,network-index = <0>;
 129                                 device_type = "network";
 130                                 compatible = "ibm,emac-405gp", "ibm,emac";
 131                                 interrupt-parent = <&UIC0>;
 132                                 interrupts = <
 133                                         f 4 /* Ethernet */
 134                                         9 4 /* Ethernet Wake Up */>;
 135                                 local-mac-address = [000000000000]; /* Filled in by zImage */
 136                                 reg = <ef600800 70>;
 137                                 mal-device = <&MAL>;
 138                                 mal-tx-channel = <0>;
 139                                 mal-rx-channel = <0>;
 140                                 cell-index = <0>;
 141                                 max-frame-size = <5dc>;
 142                                 rx-fifo-size = <1000>;
 143                                 tx-fifo-size = <800>;
 144                                 phy-mode = "rmii";
 145                                 phy-map = <00000001>;
 146                         };
 147
 148                 };
 149
 150                 EBC0: ebc {
 151                         compatible = "ibm,ebc-405gp", "ibm,ebc";
 152                         dcr-reg = <012 2>;
 153                         #address-cells = <2>;
 154                         #size-cells = <1>;
 155                         /* The ranges property is supplied by the bootwrapper
 156                          * and is based on the firmware's configuration of the
 157                          * EBC bridge
 158                          */
 159                         clock-frequency = <0>; /* Filled in by zImage */
 160
 161                         sram@0,0 {
 162                                 reg = <0 0 80000>;
 163                         };
 164
 165                         flash@0,80000 {
 166                                 compatible = "jedec-flash";
 167                                 bank-width = <1>;
 168                                 reg = <0 80000 80000>;
 169                                 #address-cells = <1>;
 170                                 #size-cells = <1>;
 171                                 partition@0 {
 172                                         label = "OpenBIOS";
 173                                         reg = <0 80000>;
 174                                         read-only;
 175                                 };
 176                         };
 177
 178                         nvram@1,0 {
 179                                 /* NVRAM and RTC */
 180                                 compatible = "ds1743-nvram";
 181                                 #bytes = <2000>;
 182                                 reg = <1 0 2000>;
 183                         };
 184
 185                         keyboard@2,0 {
 186                                 compatible = "intel,82C42PC";
 187                                 reg = <2 0 2>;
 188                         };
 189
 190                         ir@3,0 {
 191                                 compatible = "ti,TIR2000PAG";
 192                                 reg = <3 0 10>;
 193                         };
 194
 195                         fpga@7,0 {
 196                                 compatible = "Walnut-FPGA";
 197                                 reg = <7 0 10>;
 198                                 virtual-reg = <f0300005>;
 199                         };
 200                 };
 201
 202                 PCI0: pci@ec000000 {
 203                         device_type = "pci";
 204                         #interrupt-cells = <1>;
 205                         #size-cells = <2>;
 206                         #address-cells = <3>;
 207                         compatible = "ibm,plb405gp-pci", "ibm,plb-pci";
 208                         primary;
 209                         reg = <eec00000 8       /* Config space access */
 210                                eed80000 4       /* IACK */
 211                                eed80000 4       /* Special cycle */
 212                                ef480000 40>;    /* Internal registers */
 213
 214                         /* Outbound ranges, one memory and one IO,
 215                          * later cannot be changed. Chip supports a second
 216                          * IO range but we don't use it for now
 217                          */
 218                         ranges = <02000000 0 80000000 80000000 0 20000000
 219                                   01000000 0 00000000 e8000000 0 00010000>;
 220
 221                         /* Inbound 2GB range starting at 0 */
 222                         dma-ranges = <42000000 0 0 0 0 80000000>;
 223
 224                         /* Walnut has all 4 IRQ pins tied together per slot */
 225                         interrupt-map-mask = <f800 0 0 0>;
 226                         interrupt-map = <
 227                                 /* IDSEL 1 */
 228                                 0800 0 0 0 &UIC0 1c 8
 229
 230                                 /* IDSEL 2 */
 231                                 1000 0 0 0 &UIC0 1d 8
 232
 233                                 /* IDSEL 3 */
 234                                 1800 0 0 0 &UIC0 1e 8
 235
 236                                 /* IDSEL 4 */
 237                                 2000 0 0 0 &UIC0 1f 8
 238                         >;
 239                 };
 240         };
 241
 242         chosen {
 243                 linux,stdout-path = "/plb/opb/serial@ef600300";
 244         };
 245 };