mirror of https://gitee.com/openkylin/linux.git
152 lines
4.2 KiB
Plaintext
152 lines
4.2 KiB
Plaintext
/*
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* Device Tree file for DB-DXBC2 board
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*
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* Copyright (C) 2016 Allied Telesis Labs
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*
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* Based on armada-xp-db.dts
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*
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* This file is dual-licensed: you can use it either under the terms
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* of the GPL or the X11 license, at your option. Note that this dual
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* licensing only applies to this file, and not this project as a
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* whole.
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*
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* a) This file is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Or, alternatively,
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*
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* b) Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Note: this Device Tree assumes that the bootloader has remapped the
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* internal registers to 0xf1000000 (instead of the default
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* 0xd0000000). The 0xf1000000 is the default used by the recent,
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* DT-capable, U-Boot bootloaders provided by Marvell. Some earlier
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* boards were delivered with an older version of the bootloader that
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* left internal registers mapped at 0xd0000000. If you are in this
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* situation, you should either update your bootloader (preferred
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* solution) or the below Device Tree should be adjusted.
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*/
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/dts-v1/;
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#include "armada-xp-98dx4251.dtsi"
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/ {
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model = "Marvell Bobcat2 Evaluation Board";
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compatible = "marvell,db-dxbc2", "marvell,armadaxp-98dx4251", "marvell,armada-370-xp";
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chosen {
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bootargs = "console=ttyS0,115200 earlyprintk";
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};
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memory {
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device_type = "memory";
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reg = <0 0x00000000 0 0x20000000>; /* 512 MB */
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};
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};
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&devbus_bootcs {
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status = "okay";
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/* Device Bus parameters are required */
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/* Read parameters */
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devbus,bus-width = <16>;
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devbus,turn-off-ps = <60000>;
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devbus,badr-skew-ps = <0>;
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devbus,acc-first-ps = <124000>;
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devbus,acc-next-ps = <248000>;
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devbus,rd-setup-ps = <0>;
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devbus,rd-hold-ps = <0>;
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/* Write parameters */
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devbus,sync-enable = <0>;
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devbus,wr-high-ps = <60000>;
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devbus,wr-low-ps = <60000>;
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devbus,ale-wr-ps = <60000>;
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};
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&i2c0 {
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clock-frequency = <100000>;
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status = "okay";
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};
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&uart0 {
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status = "okay";
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};
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&uart1 {
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status = "okay";
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};
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&nand {
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status = "okay";
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num-cs = <1>;
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marvell,nand-keep-config;
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marvell,nand-enable-arbiter;
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nand-on-flash-bbt;
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nand-ecc-strength = <4>;
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nand-ecc-step-size = <512>;
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};
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&sdio {
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pinctrl-0 = <&sdio_pins>;
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pinctrl-names = "default";
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status = "okay";
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/* No CD or WP GPIOs */
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broken-cd;
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};
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&spi0 {
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status = "okay";
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spi-flash@0 {
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#address-cells = <1>;
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#size-cells = <1>;
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compatible = "m25p64";
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reg = <0>; /* Chip select 0 */
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spi-max-frequency = <20000000>;
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m25p,fast-read;
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partition@u-boot {
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reg = <0x00000000 0x00100000>;
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label = "u-boot";
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};
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partition@u-boot-env {
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reg = <0x00100000 0x00040000>;
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label = "u-boot-env";
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};
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partition@unused {
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reg = <0x00140000 0x00ec0000>;
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label = "unused";
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};
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};
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};
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