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
22/ {
23	model = "DB-XC3-24G4XG";
24	compatible = "marvell,db-xc3-24g4xg", "marvell,armadaxp-98dx3336", "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 0x40000000>; /* 1 GB */
33	};
34};
35
36&L2 {
37	arm,parity-enable;
38	marvell,ecc-enable;
39};
40
41&devbus_bootcs {
42	status = "okay";
43
44	/* Device Bus parameters are required */
45
46	/* Read parameters */
47	devbus,bus-width    = <16>;
48	devbus,turn-off-ps  = <60000>;
49	devbus,badr-skew-ps = <0>;
50	devbus,acc-first-ps = <124000>;
51	devbus,acc-next-ps  = <248000>;
52	devbus,rd-setup-ps  = <0>;
53	devbus,rd-hold-ps   = <0>;
54
55	/* Write parameters */
56	devbus,sync-enable = <0>;
57	devbus,wr-high-ps  = <60000>;
58	devbus,wr-low-ps   = <60000>;
59	devbus,ale-wr-ps   = <60000>;
60};
61
62&uart0 {
63	status = "okay";
64};
65
66&uart1 {
67	status = "okay";
68};
69
70&i2c0 {
71	clock-frequency = <100000>;
72	status = "okay";
73};
74
75&nand_controller {
76	status = "okay";
77
78	nand@0 {
79		reg = <0>;
80		label = "pxa3xx_nand-0";
81		nand-rb = <0>;
82		marvell,nand-keep-config;
83		nand-on-flash-bbt;
84		nand-ecc-strength = <4>;
85		nand-ecc-step-size = <512>;
86	};
87};
88
89&spi0 {
90	status = "okay";
91
92	flash@0 {
93		#address-cells = <1>;
94		#size-cells = <1>;
95		compatible = "m25p64";
96		reg = <0>; /* Chip select 0 */
97		spi-max-frequency = <20000000>;
98		m25p,fast-read;
99
100		partition@u-boot {
101			reg = <0x00000000 0x00100000>;
102			label = "u-boot";
103		};
104		partition@u-boot-env {
105			reg = <0x00100000 0x00040000>;
106			label = "u-boot-env";
107		};
108		partition@unused {
109			reg = <0x00140000 0x00ec0000>;
110			label = "unused";
111		};
112
113	};
114};
115