Hello Mike, Am Montag, 9. August 2010, 09:13:45 schrieb Mike Frysinger: > > On AT91 the watchdog mode register can only be written once after reset. > > If this register is written by u-boot e.g. a Linux driver can't > > reconfigure the watchdog later. If the watchdog is left untouched this > > is possible. Without touching the mode register the watchdog has a > > default setup and u-boot is still able to trigger the watchdog. > > > > [...] > > > > +- CONFIG_SKIP_WATCHDOG_INIT > > + > > + [arm AT91 only] If this variable is defined, then the > > + watchdog will not be programmed upon u-boot start. > > + On AT91 the watchdog mode register can only be written > > + once after reset. If this register is written by u-boot > > + e.g. a Linux driver can't reconfigure the watchdog later. > > If + the watchdog is left untouched this is possible. + > > Without touching the mode register the watchdog has a > > default + setup and u-boot is still able to trigger the > > watchdog. > > isnt the at91 logic inverted ? shouldnt the watchdog programming only > be done when someone has opted in to it via some watchdog define ?
This was my first version, but Wolfgang NAK'ed it as he see this as the wrong approach. See http://article.gmane.org/gmane.comp.boot-loaders.u-boot/81589 Best regards, Alexander _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot