fjpanag opened a new pull request #1561: URL: https://github.com/apache/incubator-nuttx/pull/1561
## Summary Some MCUs of the STM32F4 family have the ability to operate up to 180MHz, but only if core over-drive is enabled. The current code indeed enables the core over-drive, but not for all MCUs that need it. The MCUs in need of over-drive to reach their maximum clock are: STM32F427 STM32F429 STM32F437 STM32F439 STM32F446 STM32F469 STM32F479 ## Impact For some of the aforementioned MCUs, core over-drive was not enabled, resulting in invalid clocking configuration. Unfortunately as tested, at least on my board, the MCU happily accepted 180MHz without over-drive enabled and worked OK. Thus it is very possible that many users of this chip are not aware of this miss-configuration. The chip though may be unstable in certain conditions. ## Testing Tested on a custom board, using an STM32F427VI. After the change, the respective code is indeed enabled. After boot, the core over-drive is enabled as it should, checked by the respective register value. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
