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From: Viresh Kumar <viresh.kumar@linaro.org>
To: Stephen Warren <swarren@wwwdotorg.org>
Cc: rjw@sisk.pl, swarren@nvidia.com, linaro-kernel@lists.linaro.org,
	patches@linaro.org, cpufreq@vger.kernel.org,
	linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
	mturquette@linaro.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 1/6] clk: Tegra: Add CPU0 clock driver
Date: Thu, 8 Aug 2013 08:12:48 +0530	[thread overview]
Message-ID: <CAKohpoky9-E2XoxAQy_oQ3sMxvAv5ZfBdDQPd6zUxcSwyKmzXg@mail.gmail.com> (raw)
In-Reply-To: <52029713.5070808@wwwdotorg.org>

On 8 August 2013 00:20, Stephen Warren <swarren@wwwdotorg.org> wrote:
> Right, and that's *exactly* what having a cpufreq driver is for; to
> implement the details of CPU clock management.

cpufreq drivers used to keep such information since a long time,
probably because there wasn't another place to keep them and
provide generic API's (like generic clock framework).. And so this
replication started to get in place which we are trying to get rid of
now.

All cpufreq drivers share a lot of common code which can go
away and so cpufreq-cpu0 was introduced..

With this patchset this replication goes away for tegra atleast at
the cost of a platform specific clk-cpu driver.. I think that's a good
deal, isn't it?

And that's the only way you can use these generic drivers that we
have...

WARNING: multiple messages have this Message-ID (diff)
From: viresh.kumar@linaro.org (Viresh Kumar)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/6] clk: Tegra: Add CPU0 clock driver
Date: Thu, 8 Aug 2013 08:12:48 +0530	[thread overview]
Message-ID: <CAKohpoky9-E2XoxAQy_oQ3sMxvAv5ZfBdDQPd6zUxcSwyKmzXg@mail.gmail.com> (raw)
In-Reply-To: <52029713.5070808@wwwdotorg.org>

On 8 August 2013 00:20, Stephen Warren <swarren@wwwdotorg.org> wrote:
> Right, and that's *exactly* what having a cpufreq driver is for; to
> implement the details of CPU clock management.

cpufreq drivers used to keep such information since a long time,
probably because there wasn't another place to keep them and
provide generic API's (like generic clock framework).. And so this
replication started to get in place which we are trying to get rid of
now.

All cpufreq drivers share a lot of common code which can go
away and so cpufreq-cpu0 was introduced..

With this patchset this replication goes away for tegra atleast at
the cost of a platform specific clk-cpu driver.. I think that's a good
deal, isn't it?

And that's the only way you can use these generic drivers that we
have...

  reply	other threads:[~2013-08-08  2:42 UTC|newest]

Thread overview: 75+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-07 14:46 [PATCH 0/6] Tegra: Use cpufreq-cpu0 driver Viresh Kumar
2013-08-07 14:46 ` Viresh Kumar
2013-08-07 14:46 ` [PATCH 1/6] clk: Tegra: Add CPU0 clock driver Viresh Kumar
2013-08-07 14:46   ` Viresh Kumar
2013-08-07 16:44   ` Mike Turquette
2013-08-07 16:44     ` Mike Turquette
2013-08-07 16:44     ` Mike Turquette
2013-08-07 17:38   ` Stephen Warren
2013-08-07 17:38     ` Stephen Warren
2013-08-07 17:45     ` Viresh Kumar
2013-08-07 17:45       ` Viresh Kumar
2013-08-07 17:48       ` Stephen Warren
2013-08-07 17:48         ` Stephen Warren
2013-08-07 17:54         ` Viresh Kumar
2013-08-07 17:54           ` Viresh Kumar
2013-08-07 18:50           ` Stephen Warren
2013-08-07 18:50             ` Stephen Warren
2013-08-08  2:42             ` Viresh Kumar [this message]
2013-08-08  2:42               ` Viresh Kumar
2013-08-08 18:50               ` Stephen Warren
2013-08-08 18:50                 ` Stephen Warren
2013-08-09  3:19                 ` Viresh Kumar
2013-08-09  3:19                   ` Viresh Kumar
2013-08-07 14:46 ` [PATCH 2/6] ARM: Tegra: Add CPU's OPPs for using cpufreq-cpu0 driver Viresh Kumar
2013-08-07 14:46   ` Viresh Kumar
2013-08-07 17:42   ` Stephen Warren
2013-08-07 17:42     ` Stephen Warren
2013-08-07 18:06     ` Viresh Kumar
2013-08-07 18:06       ` Viresh Kumar
2013-08-07 18:55       ` Stephen Warren
2013-08-07 18:55         ` Stephen Warren
2013-08-08  2:57         ` Viresh Kumar
2013-08-08  2:57           ` Viresh Kumar
2013-08-08 18:55           ` Stephen Warren
2013-08-08 18:55             ` Stephen Warren
2013-08-08 13:58         ` Lucas Stach
2013-08-08 13:58           ` Lucas Stach
2013-08-08 13:58           ` Lucas Stach
2013-08-08 14:11           ` Viresh Kumar
2013-08-08 14:11             ` Viresh Kumar
2013-08-08 14:22             ` Lucas Stach
2013-08-08 14:22               ` Lucas Stach
2013-08-08 14:37               ` Viresh Kumar
2013-08-08 14:37                 ` Viresh Kumar
2013-08-08 15:52                 ` Nishanth Menon
2013-08-08 15:52                   ` Nishanth Menon
2013-08-08 15:52                   ` Nishanth Menon
2013-08-07 14:46 ` [PATCH 3/6] ARM: Tegra: Enable OPP library Viresh Kumar
2013-08-07 14:46   ` Viresh Kumar
2013-08-07 17:43   ` Stephen Warren
2013-08-07 17:43     ` Stephen Warren
2013-08-07 18:08     ` Viresh Kumar
2013-08-07 18:08       ` Viresh Kumar
2013-08-07 14:46 ` [PATCH 4/6] ARM: Tegra: defconfig: select cpufreq-cpu0 driver Viresh Kumar
2013-08-07 14:46   ` Viresh Kumar
2013-08-07 14:46 ` [PATCH 5/6] ARM: Tegra: start using " Viresh Kumar
2013-08-07 14:46   ` Viresh Kumar
2013-08-07 17:46   ` Stephen Warren
2013-08-07 17:46     ` Stephen Warren
2013-08-07 17:49     ` Viresh Kumar
2013-08-07 17:49       ` Viresh Kumar
2013-08-07 17:53       ` Stephen Warren
2013-08-07 17:53         ` Stephen Warren
2013-08-07 17:59         ` Viresh Kumar
2013-08-07 17:59           ` Viresh Kumar
2013-08-07 18:51           ` Stephen Warren
2013-08-07 18:51             ` Stephen Warren
2013-08-08  2:48             ` Viresh Kumar
2013-08-08  2:48               ` Viresh Kumar
2013-08-07 14:46 ` [PATCH 6/6] cpufreq: Tegra: Remove tegra-cpufreq driver Viresh Kumar
2013-08-07 14:46   ` Viresh Kumar
2013-08-08  8:31 ` [PATCH 0/6] Tegra: Use cpufreq-cpu0 driver Richard Zhao
2013-08-08  8:31   ` Richard Zhao
2013-08-08  8:33   ` Viresh Kumar
2013-08-08  8:33     ` Viresh Kumar

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