1 Introduction
1.1 Purpose
This application note introduces the major considerations required to migrate
from i.MX 8X B0 to i.MX 8X C0, including i.MX 8QuadXPlus, i.MX 8DualXPlus,
and i.MX 8DualX.
To distinguish between i.MX 8X B0 and i.MX8X C0 parts, users can check the
last letter of the part number, which indicates the silicon reversion. For
example, MiMX8QX6AVLFZAB indicates that it is i.MX 8X B0 part, while
MiMX8QX6AVLFZAC indicating that it is i.MX 8X C0 part.
1.2 Scope
The i.MX 8X C0 fixes most of the errata that are reported on i.MX 8X B0. The major changes include:
• Imaging/ISI: The same functionality as B0 with optimization on the image stream flow control and performance improvement.
Bug fixes to enhance the IP and system use case operating quality.
• DRC: Bug fixes for derating logic and shorten the ECC boot time.
• DPLL: Bug fixes to resolve the pll lock issue at cold temperature and some other issues. Programming sequence changed.
• DB : Bug fix for TDM QoS mechanism is broken when HW clock gating is enabled.
• SCU: Several bug fixes. Add the ability to wake up from the SNVS ON/OFF key in KS1(LLS), Improve SNVS startup time on LDO.
• DC: Bug fixes for PRG on the fly bypass switch issue.
• GPU: Fix OpenCV and Vulkan conformance issues.
• VPU: Enhancement for encoder and decoder using different reset signal
• MIPI_CSI: Several enhancements, including align RAW8 format in MIPI_CSI reformatter with ISI.
• MIPI_DSI: Bug fixes to resolve MIPI DSI CRC issue for LP DCS long write.
• USB: Several bug fixes, including fix for ISO out queue issue.
• TOP: Several bug fixes, including fix for display write-back feature.
• ROM: Several bug fixes, including reset SECO timer if SD/MMC initialization takes too long.
For a detailed description of the complete change list, see Chapter 2.2 “Change list” below.
1.3 Audience
This document is intended for system integrators and software developers migrating from the platforms based on i.MX 8X B0 to
i.MX 8X C0.
2 Feature Change Summary
Contents
1 Introduction............................................ 1
1.1 Purpose........................ 1
1.2 Scope........................... 1
1.3 Audience.......................1
2 Feature Change Summary.................... 1
2.1 BSP support................. 2
2.2 Change list....................2
2.3 Software changes.........4
2.4 Hardware changes....... 6
3 Revision history..................................... 6
AN12770
i.MX 8X C0 Migration Guide Migrating from i.MX 8X B0 to i.MX 8X
C0
Rev. 0 — 5 March 2020
Application Note
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