Hi All,
We are Using:
Platform:
Version: 2022-04 (22.4.0)Build Id: R20220331-2313
SSP: v2.3.0
S7DK
Problem:
We want to use 16GB eMMC all of which use a JEDEC v5.0/5.1.
when we use such a chip in our system it does not work.
We are using SSP 2.3.0
Any Clues?
Regards,
Surojit
Hello Surojit,
Are you using this eMMC as the extension of the flash memory?
S7G2 is the 32-bit MCU, so the maximum addressable space is limited with 4 GB, maybe that's the reason.
Kind regards,
Sergey
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Hi Sergey,
Thank You for your prompt reply.
We are not using eMMC as flash memory,
It is used with FileX to store data as an external Media,
We have tested with 16GB SD-Card and it works fine.
4 GB eMMC works fine but 16GB eMMC is not working.
Please share about any development regarding this issue.
If your need is urgent, you should be able to init you eMMC in an earlier, pre-5.1 mode and use the existing driver. Check your datasheet and the HAL layer documentation.
Hi larry,
We have checked the datasheets and no such option is available.
You should talk to the part vendor - my understanding is that if the driver only uses jedec 4.52 features, a 5.0 part should work. Or you could add the jedec 5.0 support yourself - the vendor may have a block driver, or you could mod the one from the linux tree for ThreadX. So what doesn't work? Can you ID the part, check size, etc? Something must work unless the connection is different
Suggest leaving DS disconnected
discuss.96boards.org/.../3390
Hi Larry,
None of the vendors are providing 8Gb or more capacity for eMMC which can be used with an older version than 5.1
Sorry, I meant 5.1 in my post. A 5.1 eMMC should work with an old controller cpu. Leave DS disconnected.
Are any of the command I mentioned working?
Larry
I will try this and get back to you soon,
Appreciate your help in the matter.
Thank You,
Surojit.
Hi,
DS is not connected still we are not getting anything like ID and storage details etc.
I'm seeking guidance on accessing the eMMC on my board. Currently, I'm using the S5D9 PK kit, and I'm struggling to understand how to access the eMMC. Could you please provide some assistance?