怀疑 LX2080 处理器在低温环境下通过 Norflash（NOR 闪存）加载时存在时序异常，该如何在预启动加载器（Pre-Boot Loader，简称 PBL）阶段修改 Flex SPI（灵活串行外设接口）的总线宽度、频率、时序等配置？应参考哪份文档？默认启动采用单总线加载方式 —— 切换为多总线加载能否改善该情况？
It is suspected that the LX2080 processor has timing abnormalities when loading via Norflash (NOR Flash Memory) in a low-temperature environment. How to modify the configuration of bus width, frequency, timing, etc. of Flex SPI (Flexible Serial Peripheral Interface) during the Pre-Boot Loader (PBL for short) phase? Which document should be referenced? The default startup uses a single-bus loading method—can switching to multi-bus loading improve this situation?
