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