Skip to contentSkip to conversation

legal status of code derived from sdcard.org specs?

DISCUSSION Ian Molton 3 participants 3 messages Aug 16, 2009 – Aug 17, 2009 1 message not in the archive MMC, SD and SDIO

lore
Share & tools
lore

Ian Molton

author
#1 lore raw
In reply to a message not in the archive
Quoted 1 line · Don Mullis

sdcard.org specs appear to not be (any longer) public. When downloading some today I had to give an employer's name, and received in return PDFs watermarked with that name.

If you can put in any name, and they dont verify it, I cant imagine they can claim the specs are private.

Quoted 1 line

This is a practical issue for a couple of patches that I'd like to post for review. They extend the existing code that extracts the CSD and SCR registers to extract as well an SD-specific register containing some performance-related parameters.

Are the details unavailable in earlier 'open' versions of the docs ?

Quoted 1 line

Any ideas on how we might seek clarification?

email sdcard.org ?

-Ian

#3 lore raw
In reply to a message not in the archive
Quoted 10 lines · Don Mullis

sdcard.org specs appear to not be (any longer) public. When downloading some today I had to give an employer's name, and received in return PDFs watermarked with that name.

This is a practical issue for a couple of patches that I'd like to post for review. They extend the existing code that extracts the CSD and SCR registers to extract as well an SD-specific register containing some performance-related parameters.

Any ideas on how we might seek clarification?

On 7-29-09 Segher Boessenkool posted a message on linux-embedded that said the following:

The MMC Association has merged with JEDEC, so now everyone can download the specs, e.g. http://www.jedec.org/download/search/JESD84-A44.pdf .

Does that help?

Regards,
Hartley

#2 lore raw
In reply to Ian Molton
Quoted 7 lines · Ian Molton
Quoted 3 lines · Don Mullis

sdcard.org specs appear to not be (any longer) public. When downloading some today I had to give an employer's name, and received in return PDFs watermarked with that name.

If you can put in any name, and they dont verify it, I cant imagine they can claim the specs are private.

A bit more Googling has turned up the "SD Simplified Specification", publicly available from:

http://www.sdcard.org/developers/tech/sdcard/pls/

This doc does describe the SD_STATUS register -- so I will post my patches.