-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Somebody in the thread at some point said: | On Saturday 12 April 2008 22:49:36 Andy Green wrote: |> | 2.6.24 JFFS2 as such is pretty unstable. |> | |> | The same thread had a pointer to |> | http://sourceforge.net/projects/mtd-mods. |> | as a source for cherry-picking changes. |> |> Hum. NAND, bad blocks, dynamic partition tables, JFFS2, all things I |> hope can go the same way as YAFFS2. | | Word! | | As much as I like to see that happening - do you have any figures about power | consumption of root-on-NAND vs. root-on-SD(-on-NAND)?
Probably "less" for root-on-NAND as it is... but we have at least two possible levels of tricks we can play with SD card to reduce that. One is to stop issuing the external clock to the card when we don't transfer something (the cards have their own internal oscillators to stay alive with), the second would need MCI layer support: to flat out power down the card after a "spindown timeout" same as a laptop HDD, and bring it up again when we transfer something next time. Literally remove power from it when idle... I guess it is pretty much idle after boot unless the user starts a new app, etc. - -Andy -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iEYEARECAAYFAkgB4UIACgkQOjLpvpq7dMpRJwCdEqua2J1dTeGJbiRTR//en79Y j4sAn1NcNv50kjr5Tu34Pq4yrsHKy3cL =W5sL -----END PGP SIGNATURE-----
