Mity CPU Platforms » MitySOM-5CSX Altera Cyclone V

11/25/2021

12:31 PM PCB Development: RE: Bootup Peculiarities

Hi Lucas,
In your boot log, I am seeing several error messages around the SD-MMC card (ext4-fs /dev/mmcblk0p* devi... Michael Williamson

11/24/2021

08:58 PM PCB Development: RE: Bootup Peculiarities

Correction!
I held down the POR low a little longer and it booted...
U-Boot SPL 2013.01.01 (Sep 14 2021 -... Lucas Uecker

07:56 PM PCB Development: RE: Bootup Peculiarities

No output from console on the module that has the NCONFIG light come on.
New module doesn't boot up, so no output fr... Lucas Uecker

05:14 PM PCB Development: RE: Bootup Peculiarities

Hi Lucas,
It looks like you do have the pull ups on CMD and D0. Can you post your console log of the SOM hanging d... Daniel Vincelette

02:26 PM PCB Development: RE: Bootup Peculiarities

!SDcardRs.PNG! Lucas Uecker

02:25 PM PCB Development: RE: Bootup Peculiarities

Here's the relevant area on my schematic: Lucas Uecker

02:16 PM PCB Development: RE: Bootup Peculiarities

Hi Lucas,
Do you have the pull up resistors on the SD Card interface?
Have you looked at this support page on "... Michael Williamson

11/22/2021

10:22 PM PCB Development: Bootup Peculiarities

Hello again.
I have built a handful of prototypes of our carrierboard and have had some boot up fine (I have it se... Lucas Uecker