本文转载自:https://patchwork.kernel.org/patch/2845464/ Padmavathi VennaAug. 16, 2013, 4:26 a.m. UTC This patch removes quirks from i2s node and change the i2s compatible names. Signed-off-by: Padmavathi Venna <padma.v@samsung.com> --- Changes since V4: -…

Question: I have an application, but to test something, I need to change value of a String[]. But when I do it using change value in variables tab, everytime it gives error. I have tried using : {"string1", "string2"} ["string1&qu…

本文转载自:http://blog.csdn.net/ruanjianruanjianruan/article/details/61622053 内核添加dts后,device和device_driver的match匹配的变动: 先看platform总线: /driver/base/platform.c文件: static int platform_match(struct device *dev, struct device_driver *drv) {struct platform_devi…

http://elinux.org/Device_Tree_Usage Device Tree Usage     Top Device Tree page This page walks through how to write a device tree for a new machine. It is intended to provide an overview of device tree concepts and how they are used to describe a mac…

Basic Data Format The device tree is a simple tree structure of nodes and properties. Properties are key-value pairs, and node may contain both properties and child nodes. For example, the following is a simple tree in the .dts format: / { node1 { a-…

1. ARM Device Tree起源 Linus Torvalds在2011年3月17日的ARM Linux邮件列表宣称“this whole ARM thing is a f*cking pain in the ass”,引发ARM Linux社区的地震,随后ARM社区进行了一系列的重大修正.在过去的ARM Linux中,arch/arm/plat-xxx和arch/arm/mach-xxx中充斥着大量的垃圾代码,相当多数的代码只是在描述板级细节,而 这些板级细节对于内核来讲,不过是垃圾,…

学习目标:学习设备树相关内容: 一.概念 在Linux 2.6中,ARM架构的板极硬件细节过多地被硬编码在arch/arm/plat-xxx和arch/arm/mach-xxx,在kernel中存在大量的冗余编码.采用Device Tree后,许多硬件的细节可以直接透过它传递给Linux.Device Tree是一种描述硬件的数据结构,它起源于 OpenFirmware (OF). Device Tree由一系列被命名的结点(node)和属性(property)组成,而结点本身可包含子结点.所谓…

18.1 设备树的起源 linux 2.6及之前,大量板级信息被硬编码到内核里,十分庞大,大量冗余代码: linux 2.6之前,引入了设备树: 设备树源于OpenFirmware,描述硬件的数据结构.由一些列节点node和属性property组成,通常包括下列信息: 本质上是画一棵CPU.总线.设备组成的树,Linux内核会把设备树展开成platform_device.i2c_client.spi_device等设备,而这些设备用到的内存.中断等资源,也会传递个内核,内核会将这些资源绑定给展开…

Performing Asynchronous HotLog Publishing Step 1   Source Database DBA: Set the database initialization parameters. Microsoft Windows [版本 ] 版权所有 (c) Microsoft Corporation.保留所有权利. C:\Users\Administrator>sqlplus /nolog SQL*Plus: Release Production on 星…

一.DTS的加载过程   如果要使用Device Tree,首先用户要了解自己的硬件配置和系统运行参数,并把这些信息组织成Device Tree source file.通过DTC(Device Tree Compiler),可以将这些适合人类阅读的Device Tree source file变成适合机器处理的Device Tree binary file(device tree blob). 在系统启动时,boot program(例如:firmware.bootloader)可以将保存在f…