arch/arm/boot/dts/intel-ixp4xx.dtsi

   1 // SPDX-License-Identifier: ISC
   2 /*
   3  * Device Tree file for Intel XScale Network Processors
   4  * in the IXP 4xx series.
   5  */
   6 #include <dt-bindings/interrupt-controller/irq.h>
   7 #include <dt-bindings/gpio/gpio.h>
   8
   9 / {
  10         soc {
  11                 #address-cells = <1>;
  12                 #size-cells = <1>;
  13                 ranges;
  14                 compatible = "simple-bus";
  15                 interrupt-parent = <&intcon>;
  16
  17                 /*
  18                  * The IXP4xx expansion bus is a set of up to 7 each up to 16MB
  19                  * windows in the 256MB space from 0x50000000 to 0x5fffffff.
  20                  */
  21                 bus@c4000000 {
  22                         /* compatible and reg filled in by per-soc device tree */
  23                         native-endian;
  24                         #address-cells = <2>;
  25                         #size-cells = <1>;
  26                         ranges = <0 0x0 0x50000000 0x01000000>,
  27                                  <1 0x0 0x51000000 0x01000000>,
  28                                  <2 0x0 0x52000000 0x01000000>,
  29                                  <3 0x0 0x53000000 0x01000000>,
  30                                  <4 0x0 0x54000000 0x01000000>,
  31                                  <5 0x0 0x55000000 0x01000000>,
  32                                  <6 0x0 0x56000000 0x01000000>,
  33                                  <7 0x0 0x57000000 0x01000000>;
  34                         dma-ranges = <0 0x0 0x50000000 0x01000000>,
  35                                  <1 0x0 0x51000000 0x01000000>,
  36                                  <2 0x0 0x52000000 0x01000000>,
  37                                  <3 0x0 0x53000000 0x01000000>,
  38                                  <4 0x0 0x54000000 0x01000000>,
  39                                  <5 0x0 0x55000000 0x01000000>,
  40                                  <6 0x0 0x56000000 0x01000000>,
  41                                  <7 0x0 0x57000000 0x01000000>;
  42                 };
  43
  44                 qmgr: queue-manager@60000000 {
  45                         compatible = "intel,ixp4xx-ahb-queue-manager";
  46                         reg = <0x60000000 0x4000>;
  47                         interrupts = <3 IRQ_TYPE_LEVEL_HIGH>, <4 IRQ_TYPE_LEVEL_HIGH>;
  48                 };
  49
  50                 pci@c0000000 {
  51                         /* compatible filled in by per-soc device tree */
  52                         reg = <0xc0000000 0x1000>;
  53                         interrupts = <8 IRQ_TYPE_LEVEL_HIGH>,
  54                                      <9 IRQ_TYPE_LEVEL_HIGH>,
  55                                      <10 IRQ_TYPE_LEVEL_HIGH>;
  56                         #address-cells = <3>;
  57                         #size-cells = <2>;
  58                         device_type = "pci";
  59                         bus-range = <0x00 0xff>;
  60                         status = "disabled";
  61
  62                         ranges =
  63                         /*
  64                          * 64MB 32bit non-prefetchable memory 0x48000000-0x4bffffff
  65                          * done in 4 chunks of 16MB each.
  66                          */
  67                         <0x02000000 0 0x48000000 0x48000000 0 0x04000000>,
  68                         /* 64KB I/O space at 0x4c000000 */
  69                         <0x01000000 0 0x00000000 0x4c000000 0 0x00010000>;
  70
  71                         /*
  72                          * This needs to map to the start of physical memory so
  73                          * PCI devices can see all (hopefully) memory. This is done
  74                          * using 4 1:1 16MB windows, so the RAM should not be more than
  75                          * 64 MB for this to work. If your memory is anywhere else
  76                          * than at 0x0 you need to alter this.
  77                          */
  78                         dma-ranges =
  79                         <0x02000000 0 0x00000000 0x00000000 0 0x04000000>;
  80
  81                         /* Each unique DTS using PCI must specify the swizzling */
  82                 };
  83
  84                 uart0: serial@c8000000 {
  85                         compatible = "intel,xscale-uart";
  86                         reg = <0xc8000000 0x1000>;
  87                         /*
  88                          * The reg-offset and reg-shift is a side effect
  89                          * of running the platform in big endian mode.
  90                          */
  91                         reg-offset = <3>;
  92                         reg-shift = <2>;
  93                         interrupts = <15 IRQ_TYPE_LEVEL_HIGH>;
  94                         clock-frequency = <14745600>;
  95                         no-loopback-test;
  96                 };
  97
  98                 uart1: serial@c8001000 {
  99                         compatible = "intel,xscale-uart";
 100                         reg = <0xc8001000 0x1000>;
 101                         /*
 102                          * The reg-offset and reg-shift is a side effect
 103                          * of running the platform in big endian mode.
 104                          */
 105                         reg-offset = <3>;
 106                         reg-shift = <2>;
 107                         interrupts = <13 IRQ_TYPE_LEVEL_HIGH>;
 108                         clock-frequency = <14745600>;
 109                         no-loopback-test;
 110                 };
 111
 112                 gpio0: gpio@c8004000 {
 113                         compatible = "intel,ixp4xx-gpio";
 114                         reg = <0xc8004000 0x1000>;
 115                         gpio-controller;
 116                         #gpio-cells = <2>;
 117                         interrupt-controller;
 118                         #interrupt-cells = <2>;
 119                 };
 120
 121                 intcon: interrupt-controller@c8003000 {
 122                         /*
 123                          * Note: no compatible string. The subvariant of the
 124                          * chip needs to define what version it is. The
 125                          * location of the interrupt controller is fixed in
 126                          * memory across all variants.
 127                          */
 128                         reg = <0xc8003000 0x100>;
 129                         interrupt-controller;
 130                         #interrupt-cells = <2>;
 131                 };
 132
 133                 timer@c8005000 {
 134                         compatible = "intel,ixp4xx-timer";
 135                         reg = <0xc8005000 0x100>;
 136                         interrupts = <5 IRQ_TYPE_LEVEL_HIGH>;
 137                 };
 138
 139                 npe: npe@c8006000 {
 140                         compatible = "intel,ixp4xx-network-processing-engine";
 141                         reg = <0xc8006000 0x1000>, <0xc8007000 0x1000>, <0xc8008000 0x1000>;
 142                         #address-cells = <1>;
 143                         #size-cells = <0>;
 144
 145                         /* NPE-A contains two high-speed serial links */
 146                         hss@0 {
 147                                 compatible = "intel,ixp4xx-hss";
 148                                 reg = <0>;
 149                                 intel,npe-handle = <&npe 0>;
 150                                 status = "disabled";
 151                         };
 152
 153                         hss@1 {
 154                                 compatible = "intel,ixp4xx-hss";
 155                                 reg = <1>;
 156                                 intel,npe-handle = <&npe 0>;
 157                                 status = "disabled";
 158                         };
 159
 160                         /* NPE-C contains a crypto accelerator */
 161                         crypto {
 162                                 compatible = "intel,ixp4xx-crypto";
 163                                 intel,npe-handle = <&npe 2>;
 164                                 queue-rx = <&qmgr 30>;
 165                                 queue-txready = <&qmgr 29>;
 166                         };
 167                 };
 168
 169                 /* This is known as EthB */
 170                 ethernet@c8009000 {
 171                         compatible = "intel,ixp4xx-ethernet";
 172                         reg = <0xc8009000 0x1000>;
 173                         status = "disabled";
 174                         /* Dummy values that depend on firmware */
 175                         queue-rx = <&qmgr 3>;
 176                         queue-txready = <&qmgr 20>;
 177                         intel,npe-handle = <&npe 1>;
 178                 };
 179
 180                 /* This is known as EthC */
 181                 ethernet@c800a000 {
 182                         compatible = "intel,ixp4xx-ethernet";
 183                         reg = <0xc800a000 0x1000>;
 184                         status = "disabled";
 185                         /* Dummy values that depend on firmware */
 186                         queue-rx = <&qmgr 0>;
 187                         queue-txready = <&qmgr 0>;
 188                         intel,npe-handle = <&npe 2>;
 189                 };
 190
 191                 /* This is known as EthA */
 192                 ethernet@c800c000 {
 193                         compatible = "intel,ixp4xx-ethernet";
 194                         reg = <0xc800c000 0x1000>;
 195                         status = "disabled";
 196                         intel,npe = <0>;
 197                         /* Dummy values that depend on firmware */
 198                         queue-rx = <&qmgr 0>;
 199                         queue-txready = <&qmgr 0>;
 200                 };
 201         };
 202 };