On Tue, Oct 23, 2012 at 08:24:36AM -0400, Matt Porter wrote: > On Tue, Oct 23, 2012 at 03:15:44AM +0000, Paul Walmsley wrote: > > On Mon, 22 Oct 2012, Matt Porter wrote: > > > > > I've mentioned this a few times in various threads...no need to use > > > appended DTB on a current U-Boot. Some of us are indeed booting this way > > > with the DTB properly passed separately from the bootloader and chosen > > > filled out by the bootloader. And yes, am335x_evm_config applies to all > > > AM33xx TI EVMs and the BeagleBone board. There's an EEPROM onboard all > > > that is used to determine what board is present so a single > > > MLO/u-boot.img can be used. > > > > As Kevin mentioned earlier, this is unfortunately not true for those of us > > with earlier BeagleBoards: > > > > http://marc.info/?l=linux-omap&m=135094296931913&w=2 > > Yes, we spoke about this a bit. > > > Do you know what the minimum board revision is that you all are > > supporting in U-boot? > > It's not so much a revision as it is getting the right contents in the > EEPROM. As it's a community board, it's generally only supported over at > beagleboard@xxxxxxxxxxxxxxxx. Jason Kridner recommends posting support > questions there (like why isn't my A2 supported in U-Boot?). If there > isn't some solution suggested there for updating the A2 I would contact > him directly. I have an A1 Bone here that also doesn't work with > mainline U-Boot even after configuring the EEPROM. You can try this > procedure if you want to write the proper contents in, an A2 may work > but for some reason there's no available history on Bone revisions prior > to A3. I vaguely recall a lot of chatter around the phy and so forth in > the A1 to A2 timeframe so it's entirely possible that your A2 will work > with just the eeprom contents programmed. Without it, it's guaranteed to > fail as the pin muxing is tied to detecting the board this way. Also, > you may need to change <offset>.1 in the below example to <offset>.2 for > your eeprom i/o to work as A2 may require an address length of 2. Ok, very quick update...no need to mess around with the eeprom. I just received the official word on what will be supported. Since A2 is pre-release, simply go to http://beagleboard.org/support/rma and fill out the form to have it replaced with the current revision (A6). This applies to *anyone* that received a pre-release A2 board. -Matt -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
