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i.MX_6Dual6Quad_Linux_Reference_Manual.pdf
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i.MX 6Dual/6Quad Linux Reference
Manual
Document Number: IMX6QLXRM
Rev L3.0.35_4.1.0, 09/2013
i.MX 6Dual/6Quad Linux Reference Manual, Rev. L3.0.35_4.1.0, 09/2013
2 Freescale Semiconductor, Inc.
Contents
Section number Title Page
Chapter 1
About this Book
1.1 Audience.......................................................................................................................................................................23
1.1.1 Conventions.....................................................................................................................................................23
1.1.2 Definitions, Acronyms, and Abbreviations......................................................................................................23
Chapter 2
Machine Specific Layer (MSL)
2.1 Introduction...................................................................................................................................................................27
2.2 Interrupts (Operation)...................................................................................................................................................28
2.2.1 Interrupt Hardware Operation..........................................................................................................................28
2.2.2 Interrupt Software Operation...........................................................................................................................28
2.2.3 Interrupt Features.............................................................................................................................................29
2.2.4 Interrupt Source Code Structure......................................................................................................................29
2.2.5 Interrupt Programming Interface.....................................................................................................................29
2.3 Timer.............................................................................................................................................................................30
2.3.1 Timer Software Operation...............................................................................................................................30
2.3.2 Timer Features.................................................................................................................................................30
2.3.3 Timer Source Code Structure...........................................................................................................................31
2.3.4 Timer Programming Interface..........................................................................................................................31
2.4 Memory Map................................................................................................................................................................31
2.4.1 Memory Map Hardware Operation..................................................................................................................31
2.4.2 Memory Map Software Operation...................................................................................................................31
2.4.3 Memory Map Features.....................................................................................................................................31
2.4.4 Memory Map Source Code Structure..............................................................................................................32
2.4.5 Memory Map Programming Interface.............................................................................................................32
2.5 IOMUX.........................................................................................................................................................................32
2.5.1 IOMUX Hardware Operation..........................................................................................................................33
2.5.2 IOMUX Software Operation............................................................................................................................33
i.MX 6Dual/6Quad Linux Reference Manual, Rev. L3.0.35_4.1.0, 09/2013
Freescale Semiconductor, Inc. 3
Section number Title Page
2.5.3 IOMUX Features..............................................................................................................................................34
2.5.4 IOMUX Source Code Structure.......................................................................................................................34
2.5.5 IOMUX Programming Interface......................................................................................................................34
2.5.6 IOMUX Control Through GPIO Module........................................................................................................34
2.5.6.1 GPIO Hardware Operation.................................................................................................................35
2.5.6.1.1 Muxing Control.................................................................................................................35
2.5.6.1.2 PULLUP Control..............................................................................................................35
2.5.6.2 GPIO Software Operation (general)..................................................................................................35
2.5.6.3 GPIO Implementation........................................................................................................................36
2.5.6.4 GPIO Source Code Structure.............................................................................................................36
2.5.6.5 GPIO Programming Interface............................................................................................................36
2.6 General Purpose Input/Output(GPIO)..........................................................................................................................36
2.6.1 GPIO Software Operation................................................................................................................................36
2.6.1.1 API for GPIO.....................................................................................................................................37
2.6.2 GPIO Features..................................................................................................................................................37
2.6.3 GPIO Module Source Code Structure..............................................................................................................38
2.6.4 GPIO Programming Interface 2.......................................................................................................................38
Chapter 3
Smart Direct Memory Access (SDMA) API
3.1 Overview.......................................................................................................................................................................39
3.1.1 Hardware Operation.........................................................................................................................................39
3.1.2 Software Operation..........................................................................................................................................39
3.1.3 Source Code Structure.....................................................................................................................................40
3.1.4 Menu Configuration Options...........................................................................................................................41
3.1.5 Programming Interface....................................................................................................................................41
3.1.6 Usage Example................................................................................................................................................41
i.MX 6Dual/6Quad Linux Reference Manual, Rev. L3.0.35_4.1.0, 09/2013
4 Freescale Semiconductor, Inc.
Section number Title Page
Chapter 4
AHB-to-APBH Bridge with DMA (APBH-Bridge-DMA)
4.1 Overview.......................................................................................................................................................................43
4.1.1 Hardware Operation.........................................................................................................................................43
4.1.2 Software Operation..........................................................................................................................................44
4.1.3 Source Code Structure.....................................................................................................................................44
4.1.4 Menu Configuration Options...........................................................................................................................45
4.1.5 Programming Interface....................................................................................................................................45
4.1.6 Usage Example................................................................................................................................................45
Chapter 5
Image Processing Unit (IPU) Drivers
5.1 Introduction...................................................................................................................................................................47
5.2 Hardware Operation......................................................................................................................................................48
5.3 Software Operation.......................................................................................................................................................49
5.3.1 Overview of IPU Frame Buffer Drivers..........................................................................................................50
5.3.1.1 IPU Frame Buffer Hardware Operation.............................................................................................51
5.3.1.2 IPU Frame Buffer Software Operation..............................................................................................51
5.3.1.3 Synchronous Frame Buffer Driver.....................................................................................................52
5.3.2 IPU Backlight Driver.......................................................................................................................................53
5.3.3 IPU Device Driver...........................................................................................................................................53
5.4 Source Code Structure .................................................................................................................................................54
5.4.1 Menu Configuration Options...........................................................................................................................55
5.5 Unit Test........................................................................................................................................................................58
5.5.1 Framebuffer Tests............................................................................................................................................59
5.5.2 Video4Linux API test......................................................................................................................................59
5.5.3 IPU Device Unit test........................................................................................................................................60
Chapter 6
MIPI DSI Driver
6.1 Introduction...................................................................................................................................................................65
6.1.1 Overview of MIPI DSI IP Driver.....................................................................................................................65
i.MX 6Dual/6Quad Linux Reference Manual, Rev. L3.0.35_4.1.0, 09/2013
Freescale Semiconductor, Inc. 5
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