Maxime: Hope I didn't sound sarcastic there, I know the enormous contributions yourself and Free-Electrons have made. Sometimes the only way for us "non-devloper" types to help out is by sending pizza or in this case some hardware.
Paul: You and me both ....however I did some digging this morning and found some handy links: https://www.power.org/documentation/epapr-version-1-1/ This link is a must read: http://www.devicetree.org/Device_Tree_Usage Also there is this tutorial (no idea if it's any good) http://xillybus.com/tutorials/device-tree-zynq-1 Bruce On Thu, Jun 26, 2014 at 1:28 AM, Paul Jones <[email protected]> wrote: > Hi Bruce, > > > > I’m just guessing here, but if you can find an A20 board that is similar > to the Olimex one you should be able to modify the DTS file so that the pin > mapping is correct for your board. You will need the schematics to find > which output pins on the CPU are routed to which peripheral. > > > > If you find a good source for learning DTS files I’d like to see it – They > are still a bit of a mystery to me as well. > > > > Cheers, > > Paul. > > > > *From:* [email protected] [mailto:[email protected]] > *On Behalf Of *bruce bushby > *Sent:* Thursday, 26 June 2014 8:34 AM > *To:* [email protected] > *Subject:* Re: [linux-sunxi] Re: Booting mainline on > a20-olinuxino/cubietruck > > > > > > Hi Maxime > > > > Nope... didn't think about damaging the board..... I have absolutely no > idea what I'm doing :) ...it's just a hobby and I figured the only way to > learn is to try.....you really don't want to watch me connecting the > breadboard LOL > > > > I try and avoid constantly asking junior questions so tend to exhaust all > sense before asking for help....progress is slow but I'm learning. Know any > good books that explain how to write dts files? > > > > "....We're not ignoring it, we just don't have that hardware..." ..... > Would you like one? > > > > > > > > > > > > > On Wednesday, 25 June 2014 22:20:15 UTC+1, Maxime Ripard wrote: > > On Wed, Jun 25, 2014 at 09:37:59PM +0100, bruce bushby wrote: > > Doesn't help....which suggests I'm doing something fundamentally wrong. > > > > bootargs=console=ttyS0,115200 loglevel=9 earlyprintk > > > > In my defconfig I have: > > CONFIG_PRINTK_TIME=y > > CONFIG_EARLY_PRINTK=y > > CONFIG_DEBUG_LL=y > > CONFIG_DEBUG_FS=y > > > > The board I'm using in A20-SOM-EVB ...which was only released in May and > is > > not yet supported ...hence all my issues with uboot (no network) and > "dtb" > > > > Compiling uboot for "cubietruck" allows me to ping and tftp load my > > uImage....but it gets to Starting Kernel...... and thats it. I suspect > > thats because ttyS0 is not correctly defined in the dtb I'm using. > > You do realise you could physically damage your board doing so, right? > > Please, have an idea of what you are doing, ask for help before doing > anything stupid, or do nothing, but don't do that kind of thing. > > > I'll ask if anybody has started using these boards....can't imagine the > > community will ignore them for long. Thanks again for all your help, > much > > appreciated!!!! > > As you've seen, there's no support for this. We're not ignoring it, we > just don't have that hardware. > > So either you wait, or you learn how to do it properly and do so. But > just doing that kind of thing isn't going to work. > > Maxime > > -- > Maxime Ripard, Free Electrons > Embedded Linux, Kernel and Android engineering > http://free-electrons.com > > -- > You received this message because you are subscribed to the Google Groups > "linux-sunxi" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to a topic in the > Google Groups "linux-sunxi" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/linux-sunxi/5mQHoyAjvJE/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
