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