arch/xtensa/boot/dts/virt.dts

   1 // SPDX-License-Identifier: GPL-2.0
   2 /dts-v1/;
   3
   4 / {
   5         compatible = "cdns,xtensa-iss";
   6         #address-cells = <1>;
   7         #size-cells = <1>;
   8         interrupt-parent = <&pic>;
   9
  10         chosen {
  11                 bootargs = "console=ttyS0,115200n8 debug";
  12         };
  13
  14         memory@0 {
  15                 device_type = "memory";
  16                 reg = <0x00000000 0x80000000>;
  17         };
  18
  19         cpus {
  20                 #address-cells = <1>;
  21                 #size-cells = <0>;
  22                 cpu@0 {
  23                         compatible = "cdns,xtensa-cpu";
  24                         reg = <0>;
  25                         clocks = <&osc>;
  26                 };
  27         };
  28
  29         clocks {
  30                 osc: osc {
  31                         #clock-cells = <0>;
  32                         compatible = "fixed-clock";
  33                         clock-frequency = <40000000>;
  34                 };
  35         };
  36
  37         pic: pic {
  38                 compatible = "cdns,xtensa-pic";
  39                 /* one cell: internal irq number,
  40                  * two cells: second cell == 0: internal irq number
  41                  *            second cell == 1: external irq number
  42                  */
  43                 #address-cells = <0>;
  44                 #interrupt-cells = <2>;
  45                 interrupt-controller;
  46         };
  47
  48         pci {
  49                 compatible = "pci-host-ecam-generic";
  50                 device_type = "pci";
  51                 #address-cells = <3>;
  52                 #size-cells = <2>;
  53                 #interrupt-cells = <0x1>;
  54
  55                 bus-range = <0x0 0x3e>;
  56                 reg = <0xf0100000 0x03f00000>;
  57
  58                      // BUS_ADDRESS(3)  CPU_PHYSICAL(1)  SIZE(2)
  59                 ranges = <0x01000000 0x0 0x00000000  0xf0000000  0x0 0x00010000>,
  60                          <0x02000000 0x0 0xf4000000  0xf4000000  0x0 0x08000000>;
  61
  62                      // PCI_DEVICE(3)  INT#(1)  CONTROLLER(PHANDLE)  CONTROLLER_DATA(2)
  63                 interrupt-map = <
  64                         0x0000 0x0 0x0  0x1  &pic  0x0 0x1
  65                         0x0800 0x0 0x0  0x1  &pic  0x1 0x1
  66                         0x1000 0x0 0x0  0x1  &pic  0x2 0x1
  67                         0x1800 0x0 0x0  0x1  &pic  0x3 0x1
  68                         >;
  69
  70                 interrupt-map-mask = <0x1800 0x0 0x0  0x7>;
  71         };
  72 };