420dcfde289fe8fe3e99193df1876d399b0dce04
[openwrt/openwrt.git] / target / linux / arc770 / dts / axc001.dtsi
1 /*
2 * Copyright (C) 2013-15 Synopsys, Inc. (www.synopsys.com)
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9 /*
10 * Device tree for AXC001 770D/EM6/AS221 CPU card
11 * Note that this file only supports the 770D CPU
12 */
13
14 / {
15 compatible = "snps,arc";
16 clock-frequency = <750000000>; /* 750 MHZ */
17 #address-cells = <1>;
18 #size-cells = <1>;
19
20 cpu_card {
21 compatible = "simple-bus";
22 #address-cells = <1>;
23 #size-cells = <1>;
24
25 ranges = <0x00000000 0xf0000000 0x10000000>;
26
27 cpu_intc: arc700-intc@cpu {
28 compatible = "snps,arc700-intc";
29 interrupt-controller;
30 #interrupt-cells = <1>;
31 };
32
33 /*
34 * this GPIO block ORs all interrupts on CPU card (creg,..)
35 * to uplink only 1 IRQ to ARC core intc
36 */
37 dw-apb-gpio@0x2000 {
38 compatible = "snps,dw-apb-gpio";
39 reg = < 0x2000 0x80 >;
40 #address-cells = <1>;
41 #size-cells = <0>;
42
43 ictl_intc: gpio-controller@0 {
44 compatible = "snps,dw-apb-gpio-port";
45 gpio-controller;
46 #gpio-cells = <2>;
47 snps,nr-gpios = <30>;
48 reg = <0>;
49 interrupt-controller;
50 #interrupt-cells = <2>;
51 interrupt-parent = <&cpu_intc>;
52 interrupts = <15>;
53 };
54 };
55
56 debug_uart: dw-apb-uart@0x5000 {
57 compatible = "snps,dw-apb-uart";
58 reg = <0x5000 0x100>;
59 clock-frequency = <33333000>;
60 interrupt-parent = <&ictl_intc>;
61 interrupts = <19 4>;
62 baud = <115200>;
63 reg-shift = <2>;
64 reg-io-width = <4>;
65 };
66
67 arcpmu0: pmu {
68 compatible = "snps,arc700-pct";
69 };
70 };
71
72 /*
73 * This INTC is actually connected to DW APB GPIO
74 * which acts as a wire between MB INTC and CPU INTC.
75 * GPIO INTC is configured in platform init code
76 * and here we mimic direct connection from MB INTC to
77 * CPU INTC, thus we set "interrupts = <7>" instead of
78 * "interrupts = <12>"
79 *
80 * This intc actually resides on MB, but we move it here to
81 * avoid duplicating the MB dtsi file given that IRQ from
82 * this intc to cpu intc are different for axs101 and axs103
83 */
84 mb_intc: dw-apb-ictl@0xe0012000 {
85 #interrupt-cells = <1>;
86 compatible = "snps,dw-apb-ictl";
87 reg = < 0xe0012000 0x200 >;
88 interrupt-controller;
89 interrupt-parent = <&cpu_intc>;
90 interrupts = < 7 >;
91 };
92
93 memory {
94 #address-cells = <1>;
95 #size-cells = <1>;
96 ranges = <0x00000000 0x80000000 0x40000000>;
97 device_type = "memory";
98 reg = <0x80000000 0x20000000>; /* 512MiB */
99 };
100 };