Hi Tom, On Tue, Mar 5, 2013 at 10:38 PM, Tom Rini <tr...@ti.com> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On 03/05/2013 12:00 PM, Jagan Teki wrote: >> Hi Tom, >> >> On Tue, Mar 5, 2013 at 2:38 AM, Tom Rini <tr...@ti.com> wrote: >>> On Sat, Mar 02, 2013 at 01:59:38PM +0530, Jagan Teki wrote: >>> >>> [snip] >>>> Since these changes I have sent long back, I am just >>>> re-modified the framework to add new features at the same time >>>> with backward comparability for current commands. >>>> >>>> Current command setup: sf write sf read sf update >>>> >>>> Changed command set: [no changes in the argument count] sf >>>> write --- current command sf write.pp -- same as sf >>>> write sf write.qp -- quad program >>>> >>>> sf read -- current read sf read.af --- array flast read, same >>>> as sf read sf read.as -- array slow read sf read.do --- dual >>>> out sf read.qo -- quad out sf read.dio -- dual io sf read.qio >>>> -- quad io >>>> >>>> sf update -- current update sf update.pp.af -- write page >>>> program, read array fast, same as sf update sf update.pp.as - >>>> write page program, read array slow sf update.pp.do - write >>>> page program, read dual out sf update.pp.qo - write page >>>> program, read quad out sf update.pp.dio - write page program, >>>> read dual io sf update.pp.qio - write page program, read quad >>>> io sf update.qp.af - write quad program, read array fast sf >>>> update.qp.as - write quad program, read array slow sf >>>> update.qp.do - write quad program, read dual out sf >>>> update.qp.qo - write quad program, read quad out sf >>>> update.qp.dio - write quad program, read dual io sf >>>> update.qp.qio - write quad program, read quad io >>>> >>>> Though it seems to be lengthy, but may useful with lot of >>>> combinations from user. My intention is to use the existing >>>> argument count with changes in the command set. >>> >>> Are there cases where for the current device we're operating on >>> that can handle more than one of these, aside from fast or slow? >>> And do we really need to offer both fast and slow? >> >> Yes as per as I know spansion, numonyx and winbond flashes are >> supporting all the operation modes that I listed above. >> >> These are very generic w.r.t above flashes.or I can say these are >> commonly available modes. > > And when hooked up via whichever SPI controller you have, all of those > modes are also available and we can't really "guess" about using a > faster mode? I didn't get you. In general, u-boot should provide all the possible operation modes and the choice should be up to user. Please elaborate as I seem to be missing something.
Thanks, Jagan. > > - -- > Tom > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.11 (GNU/Linux) > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > iQIcBAEBAgAGBQJRNiaFAAoJENk4IS6UOR1WMykQAJy9vm+WJIDxVvUdP1jEBksH > mhOCcaSN7H7cbDxVvJ/9PBcN/9204X7Bf5Rg3k24rLO3QKIwJrtKP3hK9vQhGZRD > ikaS6tqOY9auJlww7ZZSbA8Kh7WbzXQ3h8TNUl/tKTU/CqqhXnZyA0N6ML547HQA > wn1+qRMSwduPZ7w0/276Ec2fRAhEK0IhXQ7KLBFaR8mman5sUB/IaRuE5oEtewaV > rpnOiwoUkih3lSq3oT51ooJFtQR4q8LvH0v272dMjFteFqjirpEdsTRY8MB1l+pb > GIGEFq/WHGkbrpzwEed9miTY1MhTZHQSRULErfgfsGck96a84J6CqGH1Se1GbRIP > 5qjX4n9FyRyRMJ94wNju4Q3GMO9H04cQrxt+DACKPNAj0XoEkWZOa740fhn3rcaJ > a+pbEja9c0PiPzoSsO4Pa3jTmvsvUcwNGlBxubdcIEDENmii63aeH8LzaOCSKTkO > 3ckE9pIzBJO+Oe5CW/7x9srGGSTsbyNgKVbgfTesS0DQYzxJ401o7Cq7hbojqTI9 > TXy8RoJDbnxuIupm43K4Ci1dRZGX2g6/XrCexv7KIyiWgN1TQJwhJKXl74OH1RhL > 4ZetFaJOHbGavaKGZK3ZTouQ3IjfYrnZ1FcijVW36fZredzHVFgG5HxGCE1VgKv7 > vRG65lCA3cSh7jyu8BYH > =jrxq > -----END PGP SIGNATURE----- _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
