[Arm-netbook] DTB for eoma-a20 pc?

Wookey wookey at wookware.org
Fri Jun 27 15:47:40 BST 2014


+++ Luke Kenneth Casson Leighton [2014-06-27 15:03 +0100]:
> On Fri, Jun 27, 2014 at 1:50 PM, Stefan Monnier
> <monnier at iro.umontreal.ca> wrote:
> >>  it actually needs dynamic creation based on:
> >>  * a "base" DTB
> >>  * kernel-time detection of the I2C EEPROM
> >>  * reading of a board-specific DTB file from the I2C EEPROM
> >>  * merging of the "base" DTB with the board-specific DTB.
> >
> > The two middle points could be done by u-boot, since u-boot already
> > adjusts the kernel's dtb in many cases (e.g. to provide the amount of
> > RAM available).
> 
>  ah!  good point.  and... wait... hang on... *thinks*.... there are
> circumstances where suspend, unplug, resume...
> 
>  ... no, it really does have to be handled by the kernel - hopefully
> u-boot would not need to do much (if anything).
> 
>  ok, first suggestion: wookie, 

wookey - you should know by now :-)

> would you be happy to do  the "base"
> DTB, basically set up a DTB which is in effect booting the CPU Card
> from USB-OTG, with UART, USB, Ethernet and RGB/TTL LCD enabled?
> ignore GPIO (they can change).

Yes, I'll try to make a DTB that boots my card in my holder. Once
that's working we can look at what a more complete solution looks like.

How many DTB-different holders are actually available currently?

And what should we call the DTB file(s)?

Wookey
-- 
Principal hats:  Linaro, Emdebian, Wookware, Balloonboard, ARM
http://wookware.org/



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