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上传时间: 2017-10-16
详细说明： Revision History.................................................................................................................8 1 Introduction.................................................................................................................9 1. 1 Purpose and Scope..............................................................................................9 1.2 Relationship to IEEE™ 1275............................................................................11 1.3 32-bit and 64-bit Support..................................................................................11 1.4 References.........................................................................................................12 1.5 Definition of Terms...........................................................................................14 1.6 Organizationally Unique Identifiers.................................................................15 2 The Device Tree........................................................................................................16 2.1 Overview...........................................................................................................16 2.2 Device Tree Structure and Conventions...........................................................17 2.2.1 Node Names..............................................................................................17 2.2.1.1 Node Name Requirements....................................................................17 2.2.2 Generic Names Recommendation.............................................................19 2.2.3 Path Names...............................................................................................20 2.2.4 Properties..................................................................................................20 2.2.4.1 Property Names.....................................................................................20 2.2.4.2 Property Values.....................................................................................21 2.3 Standard Properties...........................................................................................23 2.3.1 compatible.................................................................................................23 2.3.2 model.........................................................................................................23 2.3.3 phandle......................................................................................................24 2.3.4 status.........................................................................................................25 2.3.5 #address-cells and #size-cells...................................................................26 2.3.6 reg.............................................................................................................27 2.3.7 virtual-reg..................................................................................................27 2.3.8 ranges........................................................................................................28 2.3.9 dma-ranges................................................................................................30 2.3.10 name..........................................................................................................31 2.3.11 device_type...............................................................................................31 2.4 Interrupts and Interrupt Mapping......................................................................32 2.4.1 Properties for Interrupt Generating Devices.............................................34 2.4.1.1 interrupts...............................................................................................34 2.4.1.2 interrupt-parent.....................................................................................34 2.4.2 Properties for Interrupt Controllers...........................................................35 2.4.2.1 #interrupt-cells......................................................................................35 2.4.2.2 interrupt-controller................................................................................35 2.4.3 Interrupt Nexus Properties........................................................................35 2.4.3.1 interrupt-map.........................................................................................35 ...展开收缩
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