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};
119