linux-kernel - Re: [PATCH 0/6] ARM: sunxi: Introduce Allwinner H3 support

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Date:	Thu, 22 Oct 2015 09:49:18 +0200
From:	Jens Kuske <jenskuske@...il.com>
To:	Hans de Goede <hdegoede@...hat.com>
Cc:	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Chen-Yu Tsai <wens@...e.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Emilio López <emilio@...pez.com.ar>,
	Vishnu Patekar <vishnupatekar0510@...il.com>,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com,
	"Reinder E.N. de Haan" <reinder@...as.com>, zhao_steven@....net
Subject: Re: [PATCH 0/6] ARM: sunxi: Introduce Allwinner H3 support

Hi,

On 21/10/15 21:18, Hans de Goede wrote:
> 
> Great to see that you've started working on this again. Last weekend I
> ended up working on this too together with Reinder E.N. de Haan <reinder@...as.com>
> (added to the Cc).
> 
> We took a slightly different approach for the gates clocks, see:
> 
> https://github.com/jwrdegoede/linux-sunxi/commits/sunxi-wip
> 
> And specifically:
> 
> https://github.com/jwrdegoede/linux-sunxi/commit/80a1afe319d5d1a0c426d42e75d37f0c64e8ea0b
> 
> Combined with:
> 
> https://github.com/jwrdegoede/linux-sunxi/commit/d508da5feb5048f6674d6b24b58ac9058fb9d877
> 
> This deals with the per gate parents the same way the rockchip
> clock code does, and it seems to be quite a bit less code then your solution.
> 
> So now we've two solutions to chose from :) Since you seem to be back to
> working on this I'll refrain from doing any further work, at least
> without coordinating. Maxime, can you let us know which solution for the
> gates clock parents is best, or tell us if you think both solutions are
> no good :)

I'd actually prefer your solution. I duplicated the simple-gates code
when trying a different approach and never revisited that decision.

> 
> (I wanted to get in touch with you about the work done this weekend,
> but your posting of this v3 has sorta pre-empted that).
> 
> Other then the slightly different solution for the gates, the code in my tree
> is a straight forward port of your v2.
> 
> Thanks for your work on this!
> 
> Regards,
> 
> Hans
> 
> 
> p.s.
> 
> I'm teaching a kernel driver course at my local hackerspace in the netherlands:
> 
> https://revspace.nl/KernelDriverProgrammingCourse2015
> 
> Which is where our work on this this weekend originated. The next planned
> course day is November 1st and I expect Reinder to be working on the H3
> again then. I think the plan was to tackle USB next. Reinder can you confirm
> this ?  If you (Jens) want to work on USB before then, that is fine, but please
> coordinate their is plenty to do, so no need for us to be doing (more) double
> work.
> 

I don't plan to work on USB soon, my next step would have been Ethernet
and finishing the basic u-boot support. You know my u-boot H3 wip tree I
hope? Before we duplicate our work there too...
https://github.com/jemk/u-boot-sunxi/tree/sunxi/h3

Jens

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