Mity CPU Platforms » MitySOM-5CSX Altera Cyclone V

02/13/2024

VJ 01:01 PM Software Development: RE: eMMC and bus width 8

Now it is working, there was something wrong with the pinning.
Steps:
1. Update Platform designer.
2. Update IO pinning for the four extra bits and compile the new FPGA code.
3. Rebuild preloader and bootloader.
4. Update device tree. V J

02/12/2024

VJ 08:29 PM Software Development: RE: eMMC and bus width 8

Hi Dan
Yes, the preloader and uboot has been rebuild after changing the interface in platform designer. If I change to 4 bit in the dts file everything works fine.
We are using Quartus 17.1.
BR
VJ V J

DV 07:24 PM Software Development: RE: eMMC and bus width 8

Hello,
We haven't tried interfacing to a 8 bit eMMC with the 5CSx SOM. Just to double check did you rebuild your preloader and u-boot when you made the 4 bit to 8 bit change in platform designer? Also are you able to boot to Linux if ... Daniel Vincelette

VJ 12:36 PM Software Development: eMMC and bus width 8

Hi
Has anyone managed to interface an eMMC using 8 bit?
According to Cyclone V HPS "MMC Support matrix": https://www.intel.com/content/www/us/en/docs/programmable/683126/21-2/mmc-support-matrix.html 8 bit bus and 50MHz clock is support... V J