linux-kernel - Re: [PATCH v2 07/10] ARM: dts: tegra: Use standard power-off property in tps65911 for tegra30 apalis

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Date:	Tue, 28 Oct 2014 13:34:03 +0900
From:	Alexandre Courbot <gnurou@...il.com>
To:	balbi@...com
Cc:	Romain Perier <romain.perier@...il.com>,
	Heiko Stübner <heiko@...ech.de>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Mark Brown <broonie@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Grant Likely <grant.likely@...aro.org>, robh@...nel.org,
	Mark Rutland <mark.rutland@....com>,
	Johan Hovold <johan@...nel.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	Guenter Roeck <linux@...ck-us.net>,
	Lee Jones <lee.jones@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Stephen Warren <swarren@...dotorg.org>,
	Thierry Reding <thierry.reding@...il.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH v2 07/10] ARM: dts: tegra: Use standard power-off property
 in tps65911 for tegra30 apalis

On Tue, Oct 28, 2014 at 1:42 AM, Felipe Balbi <balbi@...com> wrote:
> On Mon, Oct 27, 2014 at 04:26:52PM +0000, Romain Perier wrote:
>> Signed-off-by: Romain Perier <romain.perier@...il.com>
>> ---
>>  arch/arm/boot/dts/tegra30-apalis.dtsi | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/arch/arm/boot/dts/tegra30-apalis.dtsi b/arch/arm/boot/dts/tegra30-apalis.dtsi
>> index a5446cb..ced4436 100644
>> --- a/arch/arm/boot/dts/tegra30-apalis.dtsi
>> +++ b/arch/arm/boot/dts/tegra30-apalis.dtsi
>> @@ -412,7 +412,7 @@
>>                       #interrupt-cells = <2>;
>>                       interrupt-controller;
>>
>> -                     ti,system-power-controller;
>> +                     system-power-controller;
>
> this board is broken until this patch is applied.

It should not. Supporting a new property in the tps65911 is fine, but
the old property must keep being supported to preserve DT
compatibility. If a change removing support for
"ti,system-power-controller" has landed in -next, then it should be
removed.
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