 Sd Card Speed, why can't get sd card work at full speed |
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 Jul 27 2006, 07:44 AM
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#1
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Group: Members Posts: 8 Joined: 15-July 06 Member No.: 10,412  |
Anybody know why not let sd card work at full speed, is it a hardware problem or software problem? Any idea if it is possible to make it work faster?
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Jul 27 2006, 08:23 AM
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#2
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 Group: Members Posts: 549 Joined: 8-July 04 From: Mid-South, USA Member No.: 3,959 |
What model zaurus? ... what rom? ... we can't help without info.
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Jul 27 2006, 08:09 PM
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#3
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 Group: Members Posts: 1,565 Joined: 7-April 05 From: Sydney, Australia Member No.: 6,806 |
4bit mode requires the full SD protocal otherwise we are stuck with mmc 1.0 compatability mode (basically spi up to 25Mhz so 25mbps) even theogh mmc is at about 4.0 and has a transfer speed that rivals that of SD but without the DRM
 apart from that i guess its really the dirvers |
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Jul 29 2006, 07:33 AM
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#4
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Group: Members Posts: 573 Joined: 8-June 05 Member No.: 7,295 |
I think we should rename it to DOM (Digital Oppression Management)
Not do mention the connotations that "Dom" has. Apparently, I can't use my new ringtones on my phone because they don't have DOM support. I own the CD, I copied them from the CD, I want to blooming use them!!!!! |
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Jul 31 2006, 06:05 AM
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#5
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Group: Members Posts: 69 Joined: 16-May 06 From: France, Metz Member No.: 9,882 |
QUOTE(chaosjtu @ Jul 27 2006, 05:44 PM) Anybody know why not let sd card work at full speed, is it a hardware problem or software problem? Any idea if it is possible to make it work faster?  Hi ! You'll find some answers in this post (talks about CF & SD speed): http://www.oesf.org/forums/index.php?showtopic=19894&hl= Cheers, Ludo. |
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Jul 31 2006, 11:10 PM
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#6
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Group: Members Posts: 1,565 Joined: 7-April 05 From: Sydney, Australia Member No.: 6,806 |
trust me there are better discussions than that one
basically if you are not a programmer then i wouldnt bother trying to speed anything up, if you are we could use a bit of help SD's a problem scince we dont have the full documenation for the SD card and will most likly never will, however some basic SD stuff went into the last mainline kernel which is nice, i cant wait to see how it will effect things if i remeber corectly there is a flag you can pass to the SD module (both on 2.4 and 2.6) try using modinfo <module name without .ko> on the SD card modules (hint use lsmod) |
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