| Chris Packham | 4db944a | 2019-04-11 22:22:53 +1200 | [diff] [blame] | 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 | #include "armada-xp-db-xc3-24g4xg-u-boot.dtsi" |
| 22 | |
| 23 | / { |
| 24 | model = "DB-XC3-24G4XG"; |
| 25 | compatible = "marvell,armadaxp-98dx3336", "marvell,armadaxp-mv78260", "marvell,armadaxp", "marvell,armada-370-xp"; |
| 26 | |
| 27 | chosen { |
| 28 | stdout-path = "serial0:115200n8"; |
| 29 | bootargs = "console=ttyS0,115200 earlyprintk"; |
| 30 | }; |
| 31 | |
| 32 | aliases { |
| 33 | spi0 = &spi0; |
| 34 | }; |
| 35 | |
| 36 | memory { |
| 37 | device_type = "memory"; |
| 38 | reg = <0 0x00000000 0 0x40000000>; /* 1 GB */ |
| 39 | }; |
| 40 | }; |
| 41 | |
| 42 | &L2 { |
| 43 | arm,parity-enable; |
| 44 | marvell,ecc-enable; |
| 45 | }; |
| 46 | |
| 47 | &devbus_bootcs { |
| 48 | status = "okay"; |
| 49 | |
| 50 | /* Device Bus parameters are required */ |
| 51 | |
| 52 | /* Read parameters */ |
| 53 | devbus,bus-width = <16>; |
| 54 | devbus,turn-off-ps = <60000>; |
| 55 | devbus,badr-skew-ps = <0>; |
| 56 | devbus,acc-first-ps = <124000>; |
| 57 | devbus,acc-next-ps = <248000>; |
| 58 | devbus,rd-setup-ps = <0>; |
| 59 | devbus,rd-hold-ps = <0>; |
| 60 | |
| 61 | /* Write parameters */ |
| 62 | devbus,sync-enable = <0>; |
| 63 | devbus,wr-high-ps = <60000>; |
| 64 | devbus,wr-low-ps = <60000>; |
| 65 | devbus,ale-wr-ps = <60000>; |
| 66 | }; |
| 67 | |
| 68 | &uart0 { |
| 69 | status = "okay"; |
| 70 | }; |
| 71 | |
| 72 | &uart1 { |
| 73 | status = "okay"; |
| 74 | }; |
| 75 | |
| 76 | &i2c0 { |
| 77 | clock-frequency = <100000>; |
| 78 | status = "okay"; |
| 79 | }; |
| 80 | |
| 81 | &usb0 { |
| 82 | status = "okay"; |
| 83 | }; |
| 84 | |
| 85 | &spi0 { |
| 86 | status = "okay"; |
| 87 | |
| 88 | spi-flash@0 { |
| 89 | #address-cells = <1>; |
| 90 | #size-cells = <1>; |
| 91 | compatible = "spi-flash", "jedec,spi-nor"; |
| 92 | reg = <0>; /* Chip select 0 */ |
| 93 | spi-max-frequency = <108000000>; |
| 94 | m25p,fast-read; |
| 95 | |
| 96 | partition@u-boot { |
| 97 | reg = <0x00000000 0x00100000>; |
| 98 | label = "u-boot"; |
| 99 | }; |
| 100 | partition@u-boot-env { |
| 101 | reg = <0x00100000 0x00040000>; |
| 102 | label = "u-boot-env"; |
| 103 | }; |
| 104 | partition@unused { |
| 105 | reg = <0x00140000 0x00ec0000>; |
| 106 | label = "unused"; |
| 107 | }; |
| 108 | |
| 109 | }; |
| 110 | }; |