1 // SPDX-License-Identifier: ISC
2 /*
3 * Device Tree file for the Intel IXDPG425 reference design.
4 * Derived from boardfiles written by MontaVista software.
5 * Ethernet set-up from OpenWrt.
6 *
7 * The device has 4 x FXS RJ11 ports for analog phones for
8 * internet telephony. (Not supported yet.)
9 *
10 * The device has 9 status LEDs we do not support yet.
11 *
12 * This device is very similar to ADI engingeering Coyote.
13 */
14
15 /dts-v1/;
16
17 #include "intel-ixp42x.dtsi"
18 #include <dt-bindings/input/input.h>
19
20 / {
21 model = "Intel IXDPG425 reference design";
22 compatible = "intel,ixdpg425", "intel,ixp42x";
23 #address-cells = <1>;
24 #size-cells = <1>;
25
26 memory@0 {
27 /* 32 MB SDRAM */
28 device_type = "memory";
29 reg = <0x00000000 0x02000000>;
30 };
31
32 chosen {
33 bootargs = "console=ttyS0,115200n8 root=/dev/sda1 rw rootwait";
34 stdout-path = "uart0:115200n8";
35 };
36
37 aliases {
38 serial0 = &uart0;
39 };
40
41 soc {
42 bus@c4000000 {
43 flash@0,0 {
44 compatible = "intel,ixp4xx-flash", "cfi-flash";
45 bank-width = <2>;
46 /*
47 * CHECKME: the product brief says 16MB in a flash
48 * socket.
49 */
50 reg = <0 0x00000000 0x1000000>;
51
52 /* Configure expansion bus to allow writes */
53 intel,ixp4xx-eb-write-enable = <1>;
54
55 partitions {
56 compatible = "redboot-fis";
57 /* CHECKME: guess this is Redboot FIS */
58 fis-index-block = <0x7f>;
59 };
60 };
61 };
62
63 pci@c0000000 {
64 status = "okay";
65
66 /*
67 * Taken from IXDPG425 PCI boardfile.
68 * We have slots (IDSEL) 12, 13 and 14 with one assigned IRQ
69 * for 12 & 13 and one for 14.
70 */
71 #interrupt-cells = <1>;
72 interrupt-map-mask = <0xf800 0 0 7>;
73 interrupt-map =
74 /* IDSEL 12 */
75 <0x6000 0 0 1 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 12 is irq 7 */
76 <0x6000 0 0 2 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 12 is irq 7 */
77 <0x6000 0 0 3 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 12 is irq 7 */
78 <0x6000 0 0 4 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 12 is irq 7 */
79 /* IDSEL 13 */
80 <0x6800 0 0 1 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 13 is irq 7 */
81 <0x6800 0 0 2 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 13 is irq 7 */
82 <0x6800 0 0 3 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 13 is irq 7 */
83 <0x6800 0 0 4 &gpio0 7 IRQ_TYPE_LEVEL_LOW>, /* INT D on slot 13 is irq 7 */
84 /* IDSEL 14 */
85 <0x7000 0 0 1 &gpio0 6 IRQ_TYPE_LEVEL_LOW>, /* INT A on slot 14 is irq 6 */
86 <0x7000 0 0 2 &gpio0 6 IRQ_TYPE_LEVEL_LOW>, /* INT B on slot 14 is irq 6 */
87 <0x7000 0 0 3 &gpio0 6 IRQ_TYPE_LEVEL_LOW>, /* INT C on slot 14 is irq 6 */
88 <0x7000 0 0 4 &gpio0 6 IRQ_TYPE_LEVEL_LOW>; /* INT D on slot 14 is irq 6 */
89 };
90
91 /*
92 * CHECKME: this ethernet setup seems dubious. Photos of the board shows some kind
93 * of Realtek DSA switch on the board.
94 */
95
96 /* EthB */
97 ethernet@c8009000 {
98 status = "okay";
99 queue-rx = <&qmgr 3>;
100 queue-txready = <&qmgr 20>;
101 phy-mode = "rgmii";
102 phy-handle = <&phy5>;
103
104 mdio {
105 #address-cells = <1>;
106 #size-cells = <0>;
107
108 phy4: ethernet-phy@4 {
109 reg = <4>;
110 };
111
112 phy5: ethernet-phy@5 {
113 reg = <5>;
114 };
115 };
116 };
117
118 /* EthC */
119 ethernet@c800a000 {
120 status = "okay";
121 queue-rx = <&qmgr 4>;
122 queue-txready = <&qmgr 21>;
123 phy-mode = "rgmii";
124 phy-handle = <&phy4>;
125 };
126 };
127 };
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