About Edgar A. Poe

Edgar A. Poe · 2023-03-03

I have a strange problem booting from eMMC (Kingstone EMMC04G-M627-X03U) on STM32MP153CAA Rev.Z.By boot failure I mean fallback to serial boot (DFU over USB). Situation is as follows:Cold start never fails (Power-on Reset).Reset pin (Pad Reset from N...

Edgar A. Poe · 2023-03-07

Hi @PatrickF,Thank you this helped to pinpoint the problem! We are using STPMIC1 but as a workaround for eMMC timeout issue on the previous prototype with Rev.B we had chosen much larger capacitor for the reset button just to keep MPU in reset for l...

Edgar A. Poe · 2023-03-03

eMMC is fully flashed and system is running correctly most of the time - problem appears occasionally when MPU is reset e.g. with Linux "reboot" command. I'd say now only one in ten reboots fail or even less than that. Pressing reset button or reconn...

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Problem booting from eMMC on Rev.Z

Re: Problem booting from eMMC on Rev.Z

Re: Problem booting from eMMC on Rev.Z