1// SPDX-License-Identifier: (GPL-2.0+ OR MIT) 2/* 3 * Device Tree file for CRS328-4C-20S-4S+ board 4 * 5 * Copyright (C) 2016 Allied Telesis Labs 6 * Copyright (C) 2020 Sartura Ltd. 7 * 8 * Based on armada-xp-db.dts 9 * 10 * Note: this Device Tree assumes that the bootloader has remapped the 11 * internal registers to 0xf1000000 (instead of the default 12 * 0xd0000000). The 0xf1000000 is the default used by the recent, 13 * DT-capable, U-Boot bootloaders provided by Marvell. Some earlier 14 * boards were delivered with an older version of the bootloader that 15 * left internal registers mapped at 0xd0000000. If you are in this 16 * situation, you should either update your bootloader (preferred 17 * solution) or the below Device Tree should be adjusted. 18 */ 19 20/dts-v1/; 21#include "armada-xp-98dx3236.dtsi" 22 23/ { 24 model = "CRS328-4C-20S-4S+"; 25 compatible = "mikrotik,crs328-4c-20s-4s", "marvell,armadaxp-98dx3236", "marvell,armada-370-xp"; 26 27 chosen { 28 bootargs = "console=ttyS0,115200 earlyprintk"; 29 }; 30 31 memory { 32 device_type = "memory"; 33 reg = <0 0x00000000 0 0x20000000>; /* 512 MB */ 34 }; 35}; 36 37&L2 { 38 arm,parity-enable; 39 marvell,ecc-enable; 40}; 41 42&devbus_bootcs { 43 status = "okay"; 44 45 /* Device Bus parameters are required */ 46 47 /* Read parameters */ 48 devbus,bus-width = <16>; 49 devbus,turn-off-ps = <60000>; 50 devbus,badr-skew-ps = <0>; 51 devbus,acc-first-ps = <124000>; 52 devbus,acc-next-ps = <248000>; 53 devbus,rd-setup-ps = <0>; 54 devbus,rd-hold-ps = <0>; 55 56 /* Write parameters */ 57 devbus,sync-enable = <0>; 58 devbus,wr-high-ps = <60000>; 59 devbus,wr-low-ps = <60000>; 60 devbus,ale-wr-ps = <60000>; 61}; 62 63&uart0 { 64 status = "okay"; 65}; 66 67&uart1 { 68 status = "okay"; 69}; 70 71&i2c0 { 72 clock-frequency = <100000>; 73 status = "okay"; 74}; 75 76&usb0 { 77 status = "okay"; 78}; 79 80&spi0 { 81 status = "okay"; 82 83 flash@0 { 84 #address-cells = <1>; 85 #size-cells = <1>; 86 compatible = "jedec,spi-nor"; 87 reg = <0>; /* Chip select 0 */ 88 spi-max-frequency = <108000000>; 89 m25p,fast-read; 90 91 partition@u-boot { 92 reg = <0x00000000 0x001f0000>; 93 label = "u-boot"; 94 }; 95 partition@u-boot-env { 96 reg = <0x001f0000 0x00010000>; 97 label = "u-boot-env"; 98 }; 99 partition@ubi1 { 100 reg = <0x00200000 0x00e00000>; 101 label = "ubi1"; 102 }; 103 }; 104}; 105