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 };
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