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From: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: Mark Rutland <Mark.Rutland@arm.com>,
	Tomasz Figa <t.figa@samsung.com>,
	Chander Kashyap <chander.kashyap@linaro.org>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Nicolas Pitre <nico@linaro.org>,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	"grant.likely@linaro.org" <grant.likely@linaro.org>,
	Charles Garcia-Tobin <Charles.Garcia-Tobin@arm.com>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	Kevin Hilman <khilman@linaro.org>,
	"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
	Sebastian Capella <sebcape@gmail.com>,
	Mark Brown <broonie@kernel.org>, Antti Miettinen <ananaza@iki.fi>,
	Paul Walmsley <paul@pwsan.com>,
	Geoff Levand <geoff@infradead.org>,
	Peter De Schrijver <pdeschrijver@nvidia.com>,
	Stephen Boyd <sboyd@codeaurora.org>,
	Amit Kucheria <amit.kucheria@linaro.org>,
	Bartlomi
Subject: Re: [PATCH v6 6/7] drivers: cpuidle: initialize big.LITTLE driver through DT
Date: Wed, 6 Aug 2014 10:02:20 +0100	[thread overview]
Message-ID: <20140806090220.GA24431@e102568-lin.cambridge.arm.com> (raw)
In-Reply-To: <20140723162626.GE20966@arm.com>

On Wed, Jul 23, 2014 at 05:26:26PM +0100, Catalin Marinas wrote:
> On Mon, Jul 21, 2014 at 05:06:25PM +0100, Lorenzo Pieralisi wrote:
> > With the introduction of DT based idle states, CPUidle drivers for ARM
> > can now initialize idle states data through properties in the device tree.
> > 
> > This patch adds code to the big.LITTLE CPUidle driver to dynamically
> > initialize idle states data through the updated device tree source file.
> > 
> > Cc: Chander Kashyap <chander.kashyap@linaro.org>
> > Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
> 
> I think for this patch (and the exynos one) we should still allow the
> driver to work fine with old DT. Basically if the information is not in
> DT, fall back to the original static definitions.

Yes, this makes sense, I will implement the fall-back mechanism on v7,
that should be final. If in the meanwhile Samsung guys have time to
test the Exynos patch that would be very appreciated.

Thanks,
Lorenzo

WARNING: multiple messages have this Message-ID (diff)
From: lorenzo.pieralisi@arm.com (Lorenzo Pieralisi)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v6 6/7] drivers: cpuidle: initialize big.LITTLE driver through DT
Date: Wed, 6 Aug 2014 10:02:20 +0100	[thread overview]
Message-ID: <20140806090220.GA24431@e102568-lin.cambridge.arm.com> (raw)
In-Reply-To: <20140723162626.GE20966@arm.com>

On Wed, Jul 23, 2014 at 05:26:26PM +0100, Catalin Marinas wrote:
> On Mon, Jul 21, 2014 at 05:06:25PM +0100, Lorenzo Pieralisi wrote:
> > With the introduction of DT based idle states, CPUidle drivers for ARM
> > can now initialize idle states data through properties in the device tree.
> > 
> > This patch adds code to the big.LITTLE CPUidle driver to dynamically
> > initialize idle states data through the updated device tree source file.
> > 
> > Cc: Chander Kashyap <chander.kashyap@linaro.org>
> > Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
> 
> I think for this patch (and the exynos one) we should still allow the
> driver to work fine with old DT. Basically if the information is not in
> DT, fall back to the original static definitions.

Yes, this makes sense, I will implement the fall-back mechanism on v7,
that should be final. If in the meanwhile Samsung guys have time to
test the Exynos patch that would be very appreciated.

Thanks,
Lorenzo

  reply	other threads:[~2014-08-06  9:02 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-21 16:06 [PATCH v6 0/7] ARM generic idle states Lorenzo Pieralisi
2014-07-21 16:06 ` Lorenzo Pieralisi
2014-07-21 16:06 ` [PATCH v6 1/7] Documentation: arm: define DT idle states bindings Lorenzo Pieralisi
2014-07-21 16:06   ` Lorenzo Pieralisi
2014-07-21 22:40   ` Nicolas Pitre
2014-07-21 22:40     ` Nicolas Pitre
2014-07-22 12:38   ` Rob Herring
2014-07-22 12:38     ` Rob Herring
2014-07-23 15:52   ` Daniel Lezcano
2014-07-23 15:52     ` Daniel Lezcano
2014-07-21 16:06 ` [PATCH v6 2/7] drivers: cpuidle: implement DT based idle states infrastructure Lorenzo Pieralisi
2014-07-21 16:06   ` Lorenzo Pieralisi
2014-07-23 16:07   ` Daniel Lezcano
2014-07-23 16:07     ` Daniel Lezcano
2014-07-23 17:19     ` Lorenzo Pieralisi
2014-07-23 17:19       ` Lorenzo Pieralisi
2014-07-23 16:34   ` Ashwin Chaugule
2014-07-23 16:34     ` Ashwin Chaugule
2014-07-23 17:32     ` Lorenzo Pieralisi
2014-07-23 17:32       ` Lorenzo Pieralisi
2014-07-23 19:08       ` Ashwin Chaugule
2014-07-23 19:08         ` Ashwin Chaugule
2014-07-21 16:06 ` [PATCH v6 3/7] arm64: kernel: introduce cpu_init_idle CPU operation Lorenzo Pieralisi
2014-07-21 16:06   ` Lorenzo Pieralisi
2014-07-21 22:55   ` Stephen Boyd
2014-07-21 22:55     ` Stephen Boyd
2014-07-22  9:12     ` Lorenzo Pieralisi
2014-07-22  9:12       ` Lorenzo Pieralisi
     [not found] ` <1405958786-17243-1-git-send-email-lorenzo.pieralisi-5wv7dgnIgG8@public.gmane.org>
2014-07-21 16:06   ` [PATCH v6 4/7] arm64: add PSCI CPU_SUSPEND based cpu_suspend support Lorenzo Pieralisi
2014-07-21 16:06     ` Lorenzo Pieralisi
2014-07-23 16:15     ` Ashwin Chaugule
2014-07-23 16:15       ` Ashwin Chaugule
2014-07-21 16:06 ` [PATCH v6 5/7] drivers: cpuidle: CPU idle ARM64 driver Lorenzo Pieralisi
2014-07-21 16:06   ` Lorenzo Pieralisi
2014-07-23 16:34   ` Ashwin Chaugule
2014-07-23 16:34     ` Ashwin Chaugule
2014-07-21 16:06 ` [PATCH v6 6/7] drivers: cpuidle: initialize big.LITTLE driver through DT Lorenzo Pieralisi
2014-07-21 16:06   ` Lorenzo Pieralisi
2014-07-23 16:26   ` Catalin Marinas
2014-07-23 16:26     ` Catalin Marinas
2014-08-06  9:02     ` Lorenzo Pieralisi [this message]
2014-08-06  9:02       ` Lorenzo Pieralisi
2014-07-21 16:06 ` [PATCH v6 7/7] drivers: cpuidle: initialize Exynos " Lorenzo Pieralisi
2014-07-21 16:06   ` Lorenzo Pieralisi

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