linux-kernel - Re: [PATCH 01/15] drivers: phy: add generic PHY framework

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 25 Jul 2013 12:16:30 +0200
From:	Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Tomasz Figa <tomasz.figa@...il.com>,
	Alan Stern <stern@...land.harvard.edu>,
	Tomasz Figa <t.figa@...sung.com>,
	Greg KH <gregkh@...uxfoundation.org>,
	Kishon Vijay Abraham I <kishon@...com>, broonie@...nel.org,
	Sylwester Nawrocki <sylvester.nawrocki@...il.com>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	kyungmin.park@...sung.com, balbi@...com, jg1.han@...sung.com,
	s.nawrocki@...sung.com, kgene.kim@...sung.com,
	grant.likely@...aro.org, tony@...mide.com, swarren@...dia.com,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-omap@...r.kernel.org,
	linux-usb@...r.kernel.org, linux-media@...r.kernel.org,
	linux-fbdev@...r.kernel.org, akpm@...ux-foundation.org,
	balajitk@...com, george.cherian@...com, nsekhar@...com,
	olof@...om.net, Stephen Warren <swarren@...dotorg.org>,
	b.zolnierkie@...sung.com,
	Daniel Lezcano <daniel.lezcano@...aro.org>
Subject: Re: [PATCH 01/15] drivers: phy: add generic PHY framework

Hi Arnd,

On Wednesday 24 July 2013 20:32:03 Arnd Bergmann wrote:
> On Tuesday 23 July 2013, Tomasz Figa wrote:
> > On Tuesday 23 of July 2013 17:14:20 Alan Stern wrote:
> > > On Tue, 23 Jul 2013, Tomasz Figa wrote:
> > > > Where would you want to have those phy_address arrays stored? There
> > > > are no board files when booting with DT. Not even saying that you
> > > > don't need to use any hacky schemes like this when you have DT that
> > > > nicely specifies relations between devices.
> > > 
> > > If everybody agrees DT has a nice scheme for specifying relations
> > > between devices, why not use that same scheme in the PHY core?
> > 
> > It is already used, for cases when consumer device has a DT node attached.
> > In non-DT case this kind lookup translates loosely to something that is
> > being done in regulator framework - you can't bind devices by pointers,
> > because you don't have those pointers, so you need to use device names.
> 
> Sorry for jumping in to the middle of the discussion, but why does a *new*
> framework even bother defining an interface for board files?
> 
> Can't we just drop any interfaces for platform data passing in the phy
> framework and put the burden of adding those to anyone who actually needs
> them? All the platforms we are concerned with here (exynos and omap, plus
> new platforms) can be booted using DT anyway.

What about non-DT architectures such as MIPS (still widely used in consumer 
networking equipments from what I've heard) ?

-- 
Regards,

Laurent Pinchart

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/