1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) 2014, 2015 Synopsys, Inc. (www.synopsys.com)
4 */
5
6 /*
7 * Device tree for AXC003 CPU card: HS38x2 (Dual Core) with IDU intc
8 */
9
10 /include/ "skeleton_hs_idu.dtsi"
11
12 / {
13 compatible = "snps,arc";
14 #address-cells = <2>;
15 #size-cells = <2>;
16
17 cpu_card {
18 compatible = "simple-bus";
19 #address-cells = <1>;
20 #size-cells = <1>;
21
22 ranges = <0x00000000 0x0 0xf0000000 0x10000000>;
23
24 input_clk: input-clk {
25 #clock-cells = <0>;
26 compatible = "fixed-clock";
27 clock-frequency = <33333333>;
28 };
29
30 core_clk: core-clk@80 {
31 compatible = "snps,axs10x-arc-pll-clock";
32 reg = <0x80 0x10>, <0x100 0x10>;
33 #clock-cells = <0>;
34 clocks = <&input_clk>;
35
36 /*
37 * Set initial core pll output frequency to 100MHz.
38 * It will be applied at the core pll driver probing
39 * on early boot.
40 */
41 assigned-clocks = <&core_clk>;
42 assigned-clock-rates = <100000000>;
43 };
44
45 core_intc: archs-intc@cpu {
46 compatible = "snps,archs-intc";
47 interrupt-controller;
48 #interrupt-cells = <1>;
49 };
50
51 idu_intc: idu-interrupt-controller {
52 compatible = "snps,archs-idu-intc";
53 interrupt-controller;
54 interrupt-parent = <&core_intc>;
55 #interrupt-cells = <1>;
56 };
57
58 /*
59 * this GPIO block ORs all interrupts on CPU card (creg,..)
60 * to uplink only 1 IRQ to ARC core intc
61 */
62 dw-apb-gpio@2000 {
63 compatible = "snps,dw-apb-gpio";
64 reg = < 0x2000 0x80 >;
65 #address-cells = <1>;
66 #size-cells = <0>;
67
68 ictl_intc: gpio-controller@0 {
69 compatible = "snps,dw-apb-gpio-port";
70 gpio-controller;
71 #gpio-cells = <2>;
72 snps,nr-gpios = <30>;
73 reg = <0>;
74 interrupt-controller;
75 #interrupt-cells = <2>;
76 interrupt-parent = <&idu_intc>;
77 interrupts = <1>;
78 };
79 };
80
81 debug_uart: dw-apb-uart@5000 {
82 compatible = "snps,dw-apb-uart";
83 reg = <0x5000 0x100>;
84 clock-frequency = <33333000>;
85 interrupt-parent = <&ictl_intc>;
86 interrupts = <2 4>;
87 baud = <115200>;
88 reg-shift = <2>;
89 reg-io-width = <4>;
90 };
91
92 arcpct0: pct {
93 compatible = "snps,archs-pct";
94 #interrupt-cells = <1>;
95 interrupt-parent = <&core_intc>;
96 interrupts = <20>;
97 };
98 };
99
100 /*
101 * Mark DMA peripherals connected via IOC port as dma-coherent. We do
102 * it via overlay because peripherals defined in axs10x_mb.dtsi are
103 * used for both AXS101 and AXS103 boards and only AXS103 has IOC (so
104 * only AXS103 board has HW-coherent DMA peripherals)
105 * We don't need to mark pgu@17000 as dma-coherent because it uses
106 * external DMA buffer located outside of IOC aperture.
107 */
108 axs10x_mb {
109 ethernet@18000 {
110 dma-coherent;
111 };
112
113 usb@40000 {
114 dma-coherent;
115 };
116
117 usb@60000 {
118 dma-coherent;
119 };
120
121 mmc@15000 {
122 dma-coherent;
123 };
124 };
125
126 /*
127 * This INTC is actually connected to DW APB GPIO
128 * which acts as a wire between MB INTC and CPU INTC.
129 * GPIO INTC is configured in platform init code
130 * and here we mimic direct connection from MB INTC to
131 * CPU INTC, thus we set "interrupts = <0 1>" instead of
132 * "interrupts = <12>"
133 *
134 * This intc actually resides on MB, but we move it here to
135 * avoid duplicating the MB dtsi file given that IRQ from
136 * this intc to cpu intc are different for axs101 and axs103
137 */
138 mb_intc: interrupt-controller@e0012000 {
139 #interrupt-cells = <1>;
140 compatible = "snps,dw-apb-ictl";
141 reg = < 0x0 0xe0012000 0x0 0x200 >;
142 interrupt-controller;
143 interrupt-parent = <&idu_intc>;
144 interrupts = <0>;
145 };
146
147 memory {
148 device_type = "memory";
149 /* CONFIG_LINUX_RAM_BASE needs to match low mem start */
150 reg = <0x0 0x80000000 0x0 0x20000000 /* 512 MiB low mem */
151 0x1 0xc0000000 0x0 0x40000000>; /* 1 GiB highmem */
152 };
153
154 reserved-memory {
155 #address-cells = <2>;
156 #size-cells = <2>;
157 ranges;
158 /*
159 * Move frame buffer out of IOC aperture (0x8z-0xaz).
160 */
161 frame_buffer: frame_buffer@be000000 {
162 compatible = "shared-dma-pool";
163 reg = <0x0 0xbe000000 0x0 0x2000000>;
164 no-map;
165 };
166 };
167 };
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