Re: Questions about bringing up MT7623 board

From: Sean Wang <sean.wang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
To: Kristian Evensen
	<kristian.evensen-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Matthias Brugger
	<matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	John Crispin <john-Pj+rj9U5foFAfugRpC6u6w@public.gmane.org>
Subject: Re: Questions about bringing up MT7623 board
Date: Mon, 12 Feb 2018 22:37:09 +0800	[thread overview]
Message-ID: <1518446229.9025.61.camel@mtkswgap22> (raw)
In-Reply-To: <CAKfDRXgNGRHu9JMs-9vb4n72w+PmR8buqDnz8ObEQNXtP1pM4w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>

On Mon, 2018-02-12 at 13:02 +0100, Kristian Evensen wrote:
> Hi,
> 
> On Mon, Feb 12, 2018 at 12:08 PM, Matthias Brugger
> <matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> >
> >
> > On 02/11/2018 11:55 AM, Kristian Evensen wrote:
> >> Hi,
> >>
> >> On Sun, Feb 11, 2018 at 11:41 AM, John Crispin <john-Pj+rj9U5foFAfugRpC6u6w@public.gmane.org> wrote:
> >>> Is Earlyprinkt enabled in the kernel .config ?
> >>
> >> No, turns out CONFIG_EARLY_PRINTK was not enabled. This is the first
> >> time I am trying to add support for a board outisde the safe walls of
> >> OpenWRT, so sorry for such a rookie mistake.
> >>
> >
> > More then a rookie mistake for me it's kind of an overlook which can cost you
> > half a day. This kind of errors at least to me they happens on a semi-regular
> > basis :)
> 
> Good to know I am not the only one that has made this mistake :)
> 
> My plan now is to start with John's 4.14 mediatek support when
> available and getting my board up with OpenWRT, then sending an RFC
> with the DTS to the list. Once all of that is ready, I will look into
> how I can partition the eMMC on my board so that I can install a
> "normal" rootfs and make the board work with the mainline kernel. I am
> sure I will have lots of questions, so this is probably not my last
> email :)
> 

Hi, Kristian

Just let you know that I will extend common files and extend/add some
existing/new official reference boards such as mt7623n with emmc/nand
and mt7623a with emmc/nand to avoid just copy-n-pasting those much
almost identical nodes into following new dts.

bananapi-r2 board is also derived and customized from mt7623n with emmc
board, so it will be reasonabe to be restructured to reuse the nodes in
common files.

The thing will happen in this two weeks. You can base the work to extend
yours. 

Your SoC is based on MT7623A? I guessed it is because I have seen some
warning happenings about generic power domains in your boot log.

	Sean

> BR,
> Kristian
> 
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