1// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
2/*
3 * Device Tree file for DB-XC3-24G4XG 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-98dx3336.dtsi"
21#include "armada-xp-db-xc3-24g4xg-u-boot.dtsi"
22
23/ {
24	model = "DB-XC3-24G4XG";
25	compatible = "marvell,armadaxp-98dx3336", "marvell,armadaxp-mv78260", "marvell,armadaxp", "marvell,armada-370-xp";
26
27	chosen {
28		stdout-path = "serial0:115200n8";
29		bootargs = "console=ttyS0,115200 earlyprintk";
30	};
31
32	aliases {
33		spi0 = &spi0;
34	};
35
36	memory {
37		device_type = "memory";
38		reg = <0 0x00000000 0 0x40000000>; /* 1 GB */
39	};
40};
41
42&L2 {
43	arm,parity-enable;
44	marvell,ecc-enable;
45};
46
47&devbus_bootcs {
48	status = "okay";
49
50	/* Device Bus parameters are required */
51
52	/* Read parameters */
53	devbus,bus-width    = <16>;
54	devbus,turn-off-ps  = <60000>;
55	devbus,badr-skew-ps = <0>;
56	devbus,acc-first-ps = <124000>;
57	devbus,acc-next-ps  = <248000>;
58	devbus,rd-setup-ps  = <0>;
59	devbus,rd-hold-ps   = <0>;
60
61	/* Write parameters */
62	devbus,sync-enable = <0>;
63	devbus,wr-high-ps  = <60000>;
64	devbus,wr-low-ps   = <60000>;
65	devbus,ale-wr-ps   = <60000>;
66};
67
68&uart0 {
69	status = "okay";
70};
71
72&uart1 {
73	status = "okay";
74};
75
76&i2c0 {
77	clock-frequency = <100000>;
78	status = "okay";
79};
80
81&usb0 {
82	status = "okay";
83};
84
85&spi0 {
86	status = "okay";
87
88	spi-flash@0 {
89		#address-cells = <1>;
90		#size-cells = <1>;
91		compatible = "spi-flash", "jedec,spi-nor";
92		reg = <0>; /* Chip select 0 */
93		spi-max-frequency = <108000000>;
94		m25p,fast-read;
95
96		partition@u-boot {
97			reg = <0x00000000 0x00100000>;
98			label = "u-boot";
99		};
100		partition@u-boot-env {
101			reg = <0x00100000 0x00040000>;
102			label = "u-boot-env";
103		};
104		partition@unused {
105			reg = <0x00140000 0x00ec0000>;
106			label = "unused";
107		};
108
109	};
110};
111