1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
2 /*
3 * Device Tree file for DB-DXBC2 board
4 *
5 * Copyright (C) 2016 Allied Telesis Labs
6 *
7 * Based on armada-xp-db.dts
8 *
9 * Note: this Device Tree assumes that the bootloader has remapped the
10 * internal registers to 0xf1000000 (instead of the default
11 * 0xd0000000). The 0xf1000000 is the default used by the recent,
12 * DT-capable, U-Boot bootloaders provided by Marvell. Some earlier
13 * boards were delivered with an older version of the bootloader that
14 * left internal registers mapped at 0xd0000000. If you are in this
15 * situation, you should either update your bootloader (preferred
16 * solution) or the below Device Tree should be adjusted.
17 */
18
19 /dts-v1/;
20 #include "armada-xp-98dx4251.dtsi"
21
22 / {
23 model = "Marvell Bobcat2 Evaluation Board";
24 compatible = "marvell,db-dxbc2", "marvell,armadaxp-98dx4251", "marvell,armada-370-xp";
25
26 chosen {
27 bootargs = "console=ttyS0,115200 earlyprintk";
28 };
29
30 memory {
31 device_type = "memory";
32 reg = <0 0x00000000 0 0x20000000>; /* 512 MB */
33 };
34
35 };
36
37 &devbus_bootcs {
38 status = "okay";
39
40 /* Device Bus parameters are required */
41
42 /* Read parameters */
43 devbus,bus-width = <16>;
44 devbus,turn-off-ps = <60000>;
45 devbus,badr-skew-ps = <0>;
46 devbus,acc-first-ps = <124000>;
47 devbus,acc-next-ps = <248000>;
48 devbus,rd-setup-ps = <0>;
49 devbus,rd-hold-ps = <0>;
50
51 /* Write parameters */
52 devbus,sync-enable = <0>;
53 devbus,wr-high-ps = <60000>;
54 devbus,wr-low-ps = <60000>;
55 devbus,ale-wr-ps = <60000>;
56 };
57
58 &i2c0 {
59 clock-frequency = <100000>;
60 status = "okay";
61 };
62
63 &uart0 {
64 status = "okay";
65 };
66
67 &uart1 {
68 status = "okay";
69 };
70
71 &nand_controller {
72 status = "okay";
73
74 nand@0 {
75 reg = <0>;
76 label = "pxa3xx_nand-0";
77 nand-rb = <0>;
78 marvell,nand-keep-config;
79 nand-on-flash-bbt;
80 nand-ecc-strength = <4>;
81 nand-ecc-step-size = <512>;
82 };
83 };
84
85 &sdio {
86 pinctrl-0 = <&sdio_pins>;
87 pinctrl-names = "default";
88 status = "okay";
89 /* No CD or WP GPIOs */
90 broken-cd;
91 };
92
93 &spi0 {
94 status = "okay";
95
96 flash@0 {
97 #address-cells = <1>;
98 #size-cells = <1>;
99 compatible = "m25p64";
100 reg = <0>; /* Chip select 0 */
101 spi-max-frequency = <20000000>;
102 m25p,fast-read;
103
104 partition@u-boot {
105 reg = <0x00000000 0x00100000>;
106 label = "u-boot";
107 };
108 partition@u-boot-env {
109 reg = <0x00100000 0x00040000>;
110 label = "u-boot-env";
111 };
112 partition@unused {
113 reg = <0x00140000 0x00ec0000>;
114 label = "unused";
115 };
116
117 };
118 };
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