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 };
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