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 {
 71	status = "okay";
 72	num-cs = <1>;
 73	marvell,nand-keep-config;
 74	marvell,nand-enable-arbiter;
 75	nand-on-flash-bbt;
 76	nand-ecc-strength = <4>;
 77	nand-ecc-step-size = <512>;
 78};
 79
 80&spi0 {
 81	status = "okay";
 82
 83	spi-flash@0 {
 84		#address-cells = <1>;
 85		#size-cells = <1>;
 86		compatible = "m25p64";
 87		reg = <0>; /* Chip select 0 */
 88		spi-max-frequency = <20000000>;
 89		m25p,fast-read;
 90
 91		partition@u-boot {
 92			reg = <0x00000000 0x00100000>;
 93			label = "u-boot";
 94		};
 95		partition@u-boot-env {
 96			reg = <0x00100000 0x00040000>;
 97			label = "u-boot-env";
 98		};
 99		partition@unused {
100			reg = <0x00140000 0x00ec0000>;
101			label = "unused";
102		};
103
104	};
105};