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