1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
2 /*
3 * Device Tree file for CRS328-4C-20S-4S+ board
4 *
5 * Copyright (C) 2016 Allied Telesis Labs
6 * Copyright (C) 2020 Sartura Ltd.
7 *
8 * Based on armada-xp-db.dts
9 *
10 * Note: this Device Tree assumes that the bootloader has remapped the
11 * internal registers to 0xf1000000 (instead of the default
12 * 0xd0000000). The 0xf1000000 is the default used by the recent,
13 * DT-capable, U-Boot bootloaders provided by Marvell. Some earlier
14 * boards were delivered with an older version of the bootloader that
15 * left internal registers mapped at 0xd0000000. If you are in this
16 * situation, you should either update your bootloader (preferred
17 * solution) or the below Device Tree should be adjusted.
18 */
19
20 /dts-v1/;
21 #include "armada-xp-98dx3236.dtsi"
22
23 / {
24 model = "CRS328-4C-20S-4S+";
25 compatible = "mikrotik,crs328-4c-20s-4s", "marvell,armadaxp-98dx3236", "marvell,armada-370-xp";
26
27 chosen {
28 bootargs = "console=ttyS0,115200 earlyprintk";
29 };
30
31 memory {
32 device_type = "memory";
33 reg = <0 0x00000000 0 0x20000000>; /* 512 MB */
34 };
35 };
36
37 &L2 {
38 arm,parity-enable;
39 marvell,ecc-enable;
40 };
41
42 &devbus_bootcs {
43 status = "okay";
44
45 /* Device Bus parameters are required */
46
47 /* Read parameters */
48 devbus,bus-width = <16>;
49 devbus,turn-off-ps = <60000>;
50 devbus,badr-skew-ps = <0>;
51 devbus,acc-first-ps = <124000>;
52 devbus,acc-next-ps = <248000>;
53 devbus,rd-setup-ps = <0>;
54 devbus,rd-hold-ps = <0>;
55
56 /* Write parameters */
57 devbus,sync-enable = <0>;
58 devbus,wr-high-ps = <60000>;
59 devbus,wr-low-ps = <60000>;
60 devbus,ale-wr-ps = <60000>;
61 };
62
63 &uart0 {
64 status = "okay";
65 };
66
67 &uart1 {
68 status = "okay";
69 };
70
71 &i2c0 {
72 clock-frequency = <100000>;
73 status = "okay";
74 };
75
76 &usb0 {
77 status = "okay";
78 };
79
80 &spi0 {
81 status = "okay";
82
83 flash@0 {
84 #address-cells = <1>;
85 #size-cells = <1>;
86 compatible = "jedec,spi-nor";
87 reg = <0>; /* Chip select 0 */
88 spi-max-frequency = <108000000>;
89 m25p,fast-read;
90
91 partition@u-boot {
92 reg = <0x00000000 0x001f0000>;
93 label = "u-boot";
94 };
95 partition@u-boot-env {
96 reg = <0x001f0000 0x00010000>;
97 label = "u-boot-env";
98 };
99 partition@ubi1 {
100 reg = <0x00200000 0x00e00000>;
101 label = "ubi1";
102 };
103 };
104 };
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