linux-kernel - Re: [PATCH v1 1/5] mfd: tps65910: Convert ti,system-power-controller DT property to poweroff-source

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Date:	Thu, 23 Oct 2014 11:39:34 +0200
From:	PERIER Romain <romain.perier@...il.com>
To:	Peter De Schrijver <pdeschrijver@...dia.com>
Cc:	"sameo@...ux.intel.com" <sameo@...ux.intel.com>,
	Lee Jones <lee.jones@...aro.org>, robh+dt@...nel.org,
	"pawel.moll" <pawel.moll@....com>, mark.rutland@....com,
	"ijc+devicetree" <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Stephen Warren <swarren@...dotorg.org>,
	Thierry Reding <thierry.reding@...il.com>,
	Alexandre Courbot <gnurou@...il.com>,
	Grant Likely <grant.likely@...aro.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	devicetree <devicetree@...r.kernel.org>,
	linux-arm-kernel@...ts.infradead.org,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	Mark Brown <broonie@...nel.org>
Subject: Re: [PATCH v1 1/5] mfd: tps65910: Convert ti,system-power-controller
 DT property to poweroff-source

Hi Peter,

2014-10-23 10:12 GMT+02:00 Peter De Schrijver <pdeschrijver@...dia.com>:
> This breaks DT ABI stability right? An existing device tree using ti,system-power-controller won't work anymore after this patch right? I don't think that's acceptable.
>

This is why I converted all dts which use "ti,system-power-controller"
and tps65910/tps65911 to the new property (everything is in the
patches serie). However, with an existing dtb it will no longer work,
yes.
What do you suggest ? keep these two properties in the driver ? :/

I mean, this is a standardization, so all the corresponding dts must
be updated and rebuilt... Like when you change something in a
dt-binding, you should update and rebuilt the dts... I Don't compute.

Romain
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