如何编程 Linux .dts 设备树文件? [英] How to program Linux .dts device tree files?

问题描述

我要在我的开发板上启动一个 Linux，我需要一个 dts 文件(设备树文件)来描述整个硬件.但是我对这个文件的语法知之甚少，不足以在板上正常运行Linux.

I'm going to launch a Linux on my development board, and i need a dts file (device tree file) to describe the whole hardware. But I only know very little about the syntax of this file which is not enough to run Linux properly on the board.

我现在只知道如何描述单元的中断号、频率、地址、父单元及其兼容的驱动程序类型(如下所述):

What i know now are only how to describe a unit's interrupt number, frequency, address, parent-unit and its compatible driver type (as described below):

ps7_scuwdt_0: ps7-scuwdt@f8f00620 {
                        compatible = "xlnx,ps7-scuwdt-1.00.a";
                        device_type = "watchdog";
                        interrupt-parent = <&ps7_scugic_0>;
                        interrupts = < 1 14 769 >;
                        reg = < 0xf8f00620 0xe0 >;
                } ;

我不熟悉其他高级用法或语法.

Other advanced usage or grammar is unfamiliar to me.

推荐答案

查看与您的开发板最相似的板的 dts.将其用作参考，并根据参考板和开发板之间的差异对 dts 进行更改.

Take a look at the dts of the board which most closely resembles your dev-board. Use that as a reference and make changes to the dts according to the differences between the reference board and your dev-board.

还要检查以下内容:
- 设备树文档项目在 eLinux(有大量链接可供开始阅读).
- 关于设备树基础知识的系列文章.
- 演练迁移到设备树.

Also checkout the following :
- Device-tree Documentation project at eLinux (has a vast collection of links to start reading).
- Series of articles on the basics of device tree.
- Walkthrough of migrating to device-tree.

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