On Mon, Dec 13, 2010 at 6:18 PM, Richard A. Smith <[email protected]>wrote:
> On 12/13/2010 03:20 AM, Carl-Daniel Hailfinger wrote: > > - Check _every_ SPI chip if it can handle the FAST READ (0x0b) command >> and mark the ones which can't, because the Dediprog driver uses FAST >> READ by default, and all other SPI programmer drivers use the standard >> READ (0x03) command, so a read test for any given chip with the Dediprog >> is useless for all other programmer drivers... >> > > What about reversing this? Assume all chips don't support fast read and > then mark the ones that do. Then people who are responsible for trying to > use the Dediprog with a particular chip would be the ones to go through and > change the setting for chips they are using. > > A list of supported chips for the SF100 is available at the dediprog site: > > http://www.dediprog.com/device_support.php > > Assuming that the dediprog really does fast read then going through that > list setting .fast_read=1 for each chip listed is a whole lot less work than > grovelling through the data sheet for every chip that flashrom supports. > > I worry that if you add a depends of full dediprog support on a complete > chip audit then it won't happen for a long time. Someone could run through > the list of chips the Dediprog supports in probably an hour or so. > > -- > Richard A. Smith <[email protected]> > One Laptop per Child > > > As one of the people mentioned in carldani's email, I would be interested in helping. I've taken a brief look at http://www.dediprog.com/download.php?106_upload_file_5 (which is a PDF download, that has a list of chips in it). I took a look at the datasheet for the AT25512, and I can't see any way to tell that this chip supports FAST_READ. It's probably because of my lack of datasheet reading experience- so if someone can clue me in to what indicates that (or any other datasheet) offers the FAST_READ capability, I would be greatly appreciative. Thanks!
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