i.MX Linux Reference Manual - NXP

1 Linux Reference ManualNXP SemiconductorsDocument identifier: IMXLXRMR eference ManualRev. , 17 December 2021 ContentsChapter 1 Software Definitions, Acronyms, and 2 Machine-Specific Layer (MSL).. Interrupts (Operation).. Interrupt Hardware Interrupt Software Interrupt Interrupt Source Code Interrupt Programming Timer Software Timer Timer Source Code Timer Programming Memory Memory Map Hardware Memory Map IOMUX Hardware IOMUX Software IOMUX IOMUX Source Code IOMUX Programming IOMUX Control Through GPIO GPIO Hardware GPIO Software Operation (general).. GPIO General Purpose Input/Output (GPIO).. GPIO Software API for GPIO GPIO Module Source Code GPIO Programming Interface Clock Software Clock Source Code .. System Boot Linux Reference Manual , Rev.

2 , 17 December 2021 Reference Manual2 / Anatop Regulator Hardware Software Driver Driver Interface Regulator Source Code Menu Configuration Power Low Level Power Management (PM).. Software Source Code Menu Configuration Programming PMIC PF Hardware Software Driver Regulator Driver Driver Interface Source Code Menu Configuration CPU Frequency Scaling (CPUFREQ).. Software Source Code Menu Configuration Dynamic Bus Software Source Code Menu Configuration Battery Software Source Code Menu Configuration Hardware Architecture-specific oprofilefs Pseudo Generic Kernel OProfile Post Profiling Interrupt Software 55 NXP Linux Reference Manual , Rev. , 17 December 2021 Reference Manual3 / Source Code Menu Configuration Programming Example Software Pulse-Width Modulator (PWM).

3 Hardware Software Driver Source Code Menu Configuration Remote Processor Source Menu Configuration Running RPMsg Test Software Source Code Menu Configuration Sensor Driver Software Source Code Menu Configuration Watchdog (WDOG).. Hardware Software Generic Driver Source Code Menu Configuration Programming 3 AHB-to-APBH Bridge with DMA (APBH-Bridge-DMA).. Hardware Software Source Code Menu Configuration Programming EIM Hardware Software Source Enabling the EIM MMC/SD/SDIO 69 NXP Linux Reference Manual , Rev. , 17 December 2021 Reference Manual4 / Hardware Software Driver Source Code Menu Configuration Device Tree Programming Loadable Module NAND GPMI Hardware Software Basic Operations: Backward Error Boot Control Block Bad Block Source Code Menu Configuration Quad Serial Peripheral Interface (QuadSPI).

4 Hardware Software Driver Source Code Menu Configuration Board Configuration Software Source Code Menu Configuration Programming Usage Usage Smart Direct Memory Access (SDMA) Hardware Software Source Code Special peripheral with SDMA I2C in 6/7 SPI NOR Flash Memory Technology Device (MTD).. Hardware Software Source Code Menu Configuration 84 Chapter 4 ADC ADC External ADC Driver Linux Reference Manual , Rev. , 17 December 2021 Reference Manual5 / Source Code Menu Configuration Programming ENET Transmit Receive Software Source Code Menu Configuration Programming 1588 Stack Linuxptp Stack Using Enhanced Configurable Serial Peripheral Interface (ECSPI).. Software SPI Sub-System in Linux Software Standard ECSPI Synchronous Source Code Menu Configuration Programming Interrupt Fast Ethernet Controller (FEC).

5 Hardware Software Source Code Menu Configuration Programming Getting a MAC Software Source Code Menu Configuration Inter-IC (I2C).. LPI2C Bus Driver I2C Device Driver Software I2C Bus Driver Software I2C Device Driver Software Driver Source Code Menu Configuration Programming Media Local MLB Driver Software Source Code Menu Configuration 103 NXP Linux Reference Manual , Rev. , 17 December 2021 Reference Manual6 / PCI Express Root Terminology and PCIe Topology on Linux OS PCI Subsystem and RC PCIe Driver Source System Resource: Memory System Resource: Interrupt Architectural Hardware Software Source Code Menu Configuration USB Wakeup How to Close the USB Child Device Changing the Controller Operation Loadable Module USB Charger Embeded Host Adding TPL-Support VBUS Source Code Low Power Universal Asynchronous Receiver/Transmitter (LPUART).

6 Hardware Software Driver Source Code Menu Configuration Programming Interrupt Bluetooth Wireless Technology Bluetooth Driver Bluetooth Driver Bluetooth Menu Configuration Software Driver Source Code Menu Configuration Configuring WLAN from User 118 Chapter 5 Graphics Processing Unit (GPU).. Driver 120 NXP Linux Reference Manual , Rev. , 17 December 2021 Reference Manual7 / Hardware Software Source Code Structure .. Library Structure .. API Menu Configuration Software Yocto Build Customizing Running X Windows Hardware Software X-Windows Acceleration Driver for X-Windows Direct Rendering Infrastructure (DRI) for X-Windows EGL- X for Setting Up X-Windows System Acceleration on Setting Up X Window System Acceleration.

7 Troubleshooting .. 133 Chapter 6 Capture Omnivision Parallel MIPI Camera Serial Interface (MIPI CSI).. Software V4L2 Source Code Display Introduction .. Frame Direct Rendering Model (DRM).. Display Display Display Processing Unit (DPU) .. Introduction .. DRM .. Source Code Menu Configuration Image Processing Unit (IPU).. Hardware Software IPU Frame Buffer Drivers IPU Frame Buffer Hardware Linux Reference Manual , Rev. , 17 December 2021 Reference Manual8 / IPU Frame Buffer Software Synchronous Frame Buffer IPU Backlight IPU Device Source Code Structure .. Menu Configuration Pixel Pipeline (PxP).. Software Key Data Channel Descriptor Completion Menu Configuration Source Code eLCDIF Frame Buffer .. Software Menu Configuration Source Code Display Control Subsystem (DCSS).

8 Introduction .. Source Code Source Code Display Parallel LCD MIPI DSI Software Source Code Menu Configuration LVDS Software Operation .. Source Code Menu Configuration LVDS Display Bridge (LDB).. Software Source Code Menu Configuration Electrophoretic Display Controller (EPDC) EPDC Frame Buffer Driver EPDC Frame Buffer Driver EPDC Panel Boot Command Line EPDC Waveform Using a Default Waveform Using a Custom Waveform EPDC Panel Linux Reference Manual , Rev. , 17 December 2021 Reference Manual9 / Grayscale Framebuffer Software Structures and Source Code Structure .. Menu Configuration High-Definition Multimedia Interface (HDMI) and Display Port (DP) Software Display Device Registration and Hotplug Handling and Video Mode 8 Display Software Source Code Menu Configuration 6 On Chip High-Definition Multimedia Interface (HDMI).

9 Software Source Code Menu Configuration External Software Source Code Menu Configuration Video for Linux 2 (V4L2).. Introduction .. 8 DPU V4L2 .. PxP V4L2 .. 6 with IPU IPU V4L2 Capture V4L2 Capture V4L2 Capture Use of the V4L2 Capture V4L2 Output V4L2 Output Use of the V4L2 Output Software Operatoins .. Source Code Structure .. Menu Configuration Video Analog-to-Digital Converter (VADC).. Software Source Code Menu Configuration DTS Configuration .. Video Processing Unit (VPU).. Software Source Code Menu Configuration JPEG Encoder and Linux Reference Manual , Rev. , 17 December 2021 Reference Manual10 / Overview of the JPEG Encoder and Decoder Limitations of the JPEG Encoder/Decoder 7 Advanced Linux Sound Architecture (ALSA) System on a Chip (ASoC) Sound.

10 ALSA Sound Driver SoC Sound Card .. Stereo CODEC Audio Codec AM/FM Codec Sound Card Hardware Stereo Audio Audio AM/FM Software ASoC Driver Source Sound Card Device Device Tree Source Code Menu Configuration Asynchronous Sample Rate Converter (ASRC).. Hardware Software Sequence for Memory to ASRC to Sequence for Memory to ASRC to Source Code Menu Configuration Device Tree Programming Interface (Exported API and IOCTLs).. HDMI The Sony/Philips Digital Interface (S/PDIF).. S/PDIF Hardware Software ASoC S/PDIF Tx Driver Provided User S/PDIF Rx Driver Provided User Source Code Structure .. Menu Configuration Device Tree Interrupts and Unit Test Tx test Rx test Linux Reference Manual , Rev. , 17 December 2021 Reference Manual11 / Audio Mixer (AUDMIX).