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NXP Semiconductors i.MX 6 - User Manual
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i.MX Porting Guide
NXP Semiconductors
Document identifier: IMXBSPPG
User's Guide
Rev. L5.4.70_2.3.0, 31 December 2020
2
Table of Contents
Main Page
default chapter
2
Table of Contents
2
Chapter 1 Introduction
7
Introduction
7
References
7
Chapter 2 Porting Kernel
9
Introduction
9
How to Build and Load Kernel in Standalone Environment
9
How to Build and Load Kernel in Yocto Project
11
Chapter 3 Porting U-Boot
12
Introduction
12
How to Build U-Boot in Standalone Environment
12
How to Build and Load U-Boot in Yocto Project
13
Customizing the I.MX Custom Board Code
14
Changing the DCD Table for I.MX DDR Initialization
14
Booting with the Modified U-Boot
14
Adding New Driver Initialization Code to Board Files
17
Further Customization at System Boot
17
Customizing the Printed Board Name
17
Debugging
18
Using JTAG Tool for Debugging
18
Using Printf for Debugging
18
Chapter 4 Porting System Controller Firmware
19
Introduction
19
Chapter 5 Configuring OP-TEE
20
Introduction
20
Boards Supported
20
OP-TEE Booting Flow
20
Figure 1. Booting Flow on I.MX 6 and I.MX 7
21
OP-TEE Linux Support
22
Memory Protection
22
Figure 2. Booting Flow on I.MX 8
22
How to Compile OP-TEE
25
Figure 3. Example of TZASC Configuration for I.MX 6UL
25
Adding OP-TEE Support for a New Board
26
Chapter 6 Configuring Arm Trusted Firmware
28
Introduction
28
Chapter 7 Memory Assignment
29
Introduction
29
Table 1. DDR Memory Assignment
29
Table 2. Flexspi Memory Assignment
30
Chapter 8 Configuring IOMUX
32
Introduction
32
Information for Setting IOMUX Controller Registers
32
Using IOMUX in the Device Tree - Example
33
Chapter 9 UART
34
Introduction
34
Chapter 10 Adding SDHC
35
Introduction
35
Chapter 11 Configuring SPI nor
37
Introduction
37
Selecting SPI nor on the Linux Image
37
Changing the SPI Interface Configuration
37
Hardware Operation
38
Chapter 12 Connecting LVDS Panel
39
Introduction
39
Connecting an LVDS Panel to the I.MX 8
39
Connecting an LVDS Panel to the I.MX 6
39
Enabling an LVDS Channel with LDB
39
LDB Ports on I.MX 6
40
LDB on I.MX 6 for Input Parallel Display Ports
40
Figure 4. I.MX 6 LVDS Display Bridge (LDB) Block
40
LDB on I.MX 6 Output LVDS Ports
41
Chapter 13 Connecting MIPI-DSI Panel
42
Introduction
42
Chapter 14 Supporting Cameras with CSI
43
Introduction
43
Required Software
43
I.MX 6Dual/6Quad/6Solo/6Duallite CSI Interfaces Layout
43
Figure 5. Camera Interface Layout
43
Configuring the CSI Unit in Test Mode
44
Adding Support for a New CMOS Camera Sensor
44
Table 3. Settings for Test Mode
44
Adding a Camera Sensor Entry in Kconfig
45
Creating the Camera Sensor File
45
Figure 6. MXC Camera/V4L2 PRP Features Support Window
45
Table 4. Required Functions
46
Adding a Compilation Flag for the New Camera
47
Using the I C Interface
48
Loading and Testing the Camera Module
49
Additional Reference Information
50
CMOS Interfaces Supported by the I.MX 6Dual/6Quad/6Solo/6Duallite
50
I.MX 6Dual/6Quad/6Solo/6Duallite CSI Parallel Interface
51
Figure 7. IPU Block Diagram
51
Figure 8. Parallel Interface Layout
52
Table 5. CSI0 Parallel Interface Signals
52
Timing Data Mode Protocols
53
Chapter 15 Supporting Cameras with MIPI-CSI
54
Introduction
54
Chapter 16 Porting Audio Codecs
55
Introduction
55
Porting the Reference BSP to a Custom Board (Audio Codec Is the same as in the Reference Design)
56
Porting the Reference BSP to a Custom Board (Audio Codec Is Different from the Reference Design)
56
Table 6. Required Power Supplies
56
Table 7. Files for Wm8962 Codec Support
57
Chapter 17 Porting Hifi 4
58
Porting Hifi 4 DSP Framework
58
Porting Sound Open Firmware
58
Chapter 18 Porting Ethernet
59
Introduction
59
Pin Configuration
59
Table 8. Pin Usage in MII RMII and RGMII Modes
59
Ethernet Configuration
60
Chapter 19 Porting USB
61
Introduction
61
USB Overview for I.MX 6SLL and 6Solox
62
USB Overview for I.MX 8
63
Chapter 20 Revision History
65
Revision History
65
Table 9. Revision History
65
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NXP Semiconductors i.MX 6 Specifications
General
Brand
NXP Semiconductors
Model
i.MX 6
Category
Microcontrollers
Language
English
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