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From: Felipe Balbi <balbi@ti.com>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Rafael Wysocki <rjw@rjwysocki.net>,
	rob.herring@linaro.org, arnd.bergmann@linaro.org, nm@ti.com,
	broonie@kernel.org, mike.turquette@linaro.org,
	sboyd@codeaurora.org, thomas.petazzoni@free-electrons.com,
	devicetree@vger.kernel.org, kesavan.abhilash@gmail.com,
	linaro-kernel@lists.linaro.org, ta.omasab@gmail.com,
	linux-pm@vger.kernel.org, viswanath.puttagunta@linaro.org,
	santosh.shilimkar@oracle.com, olof@lixom.net, khilman@linaro.org,
	Sudeep.Holla@arm.com, grant.likely@linaro.org,
	linux-arm-kernel@lists.infradead.org, l.stach@pengutronix.de
Subject: Re: [PATCH V4 1/3] OPP: Redefine bindings to overcome shortcomings
Date: Tue, 12 May 2015 11:19:45 -0500	[thread overview]
Message-ID: <20150512161945.GE8699@saruman.tx.rr.com> (raw)
In-Reply-To: <d225e73f183e01fa0b71e4b9248b6a19a3f7d697.1430394884.git.viresh.kumar@linaro.org>

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On Thu, Apr 30, 2015 at 05:37:59PM +0530, Viresh Kumar wrote:
> Current OPP (Operating performance point) DT bindings are proven to be
> insufficient at multiple instances.
> 
> The shortcomings we are trying to solve here:
> 
> - Getting clock sharing information between CPUs. Single shared clock vs
>   independent clock per core vs shared clock per cluster.
> 
> - Support for specifying current levels along with voltages.
> 
> - Support for multiple regulators.
> 
> - Support for turbo modes.
> 
> - Other per OPP settings: transition latencies, disabled status, etc.?
> 
> - Expandability of OPPs in future.
> 
> This patch introduces new bindings "operating-points-v2" to get these problems

operating-points-v2 is kinda awkward, how about
operating-points-extended, much like interrupts-extended ?

Other than this, I very much like the new approach.

Regards

-- 
balbi

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WARNING: multiple messages have this Message-ID (diff)
From: balbi@ti.com (Felipe Balbi)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V4 1/3] OPP: Redefine bindings to overcome shortcomings
Date: Tue, 12 May 2015 11:19:45 -0500	[thread overview]
Message-ID: <20150512161945.GE8699@saruman.tx.rr.com> (raw)
In-Reply-To: <d225e73f183e01fa0b71e4b9248b6a19a3f7d697.1430394884.git.viresh.kumar@linaro.org>

On Thu, Apr 30, 2015 at 05:37:59PM +0530, Viresh Kumar wrote:
> Current OPP (Operating performance point) DT bindings are proven to be
> insufficient at multiple instances.
> 
> The shortcomings we are trying to solve here:
> 
> - Getting clock sharing information between CPUs. Single shared clock vs
>   independent clock per core vs shared clock per cluster.
> 
> - Support for specifying current levels along with voltages.
> 
> - Support for multiple regulators.
> 
> - Support for turbo modes.
> 
> - Other per OPP settings: transition latencies, disabled status, etc.?
> 
> - Expandability of OPPs in future.
> 
> This patch introduces new bindings "operating-points-v2" to get these problems

operating-points-v2 is kinda awkward, how about
operating-points-extended, much like interrupts-extended ?

Other than this, I very much like the new approach.

Regards

-- 
balbi
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  parent reply	other threads:[~2015-05-12 16:22 UTC|newest]

Thread overview: 124+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-30 12:07 [PATCH V4 0/3] OPP: Introduce OPP (V2) bindings Viresh Kumar
2015-04-30 12:07 ` Viresh Kumar
     [not found] ` <cover.1430394884.git.viresh.kumar-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-04-30 12:07   ` [PATCH V4 1/3] OPP: Redefine bindings to overcome shortcomings Viresh Kumar
2015-04-30 12:07     ` Viresh Kumar
     [not found]     ` <d225e73f183e01fa0b71e4b9248b6a19a3f7d697.1430394884.git.viresh.kumar-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-05-04 12:12       ` Mark Brown
2015-05-04 12:12         ` Mark Brown
2015-05-05 10:48         ` Viresh Kumar
2015-05-05 10:48           ` Viresh Kumar
2015-05-05 10:57           ` Mark Brown
2015-05-05 10:57             ` Mark Brown
     [not found]             ` <20150505105714.GA22845-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-05-05 11:43               ` Viresh Kumar
2015-05-05 11:43                 ` Viresh Kumar
2015-05-05 17:12                 ` Mark Brown
2015-05-05 17:12                   ` Mark Brown
2015-05-06  6:53                   ` Viresh Kumar
2015-05-06  6:53                     ` Viresh Kumar
2015-05-07  5:52                     ` Stephen Boyd
2015-05-07  5:52                       ` Stephen Boyd
2015-05-07 11:02                       ` Mark Brown
2015-05-07 11:02                         ` Mark Brown
2015-05-07 21:18                         ` Stephen Boyd
2015-05-07 21:18                           ` Stephen Boyd
2015-05-07 22:18                           ` Mark Brown
2015-05-07 22:18                             ` Mark Brown
     [not found]                             ` <20150507221842.GW22845-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-05-08  6:47                               ` Viresh Kumar
2015-05-08  6:47                                 ` Viresh Kumar
2015-05-08 10:58                                 ` Mark Brown
2015-05-08 10:58                                   ` Mark Brown
2015-05-08 11:01                                   ` Viresh Kumar
2015-05-08 11:01                                     ` Viresh Kumar
2015-05-11  1:07                                 ` Nishanth Menon
2015-05-11  1:07                                   ` Nishanth Menon
2015-05-12  5:20                                   ` Viresh Kumar
2015-05-12  5:20                                     ` Viresh Kumar
2015-05-12 19:01                                     ` Michael Turquette
2015-05-12 19:01                                       ` Michael Turquette
2015-05-12 19:14                                       ` Nishanth Menon
2015-05-12 19:14                                         ` Nishanth Menon
2015-05-12 19:41                                         ` Mark Brown
2015-05-12 19:41                                           ` Mark Brown
2015-05-12 19:57                                           ` Nishanth Menon
2015-05-12 19:57                                             ` Nishanth Menon
2015-05-13 11:54                                             ` Mark Brown
2015-05-13 11:54                                               ` Mark Brown
     [not found]                                               ` <20150513115422.GQ3066-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-05-13 14:24                                                 ` Nishanth Menon
2015-05-13 14:24                                                   ` Nishanth Menon
2015-05-13 15:07                                                   ` Mark Brown
2015-05-13 15:07                                                     ` Mark Brown
2015-05-13 15:43                                                     ` Nishanth Menon
2015-05-13 15:43                                                       ` Nishanth Menon
2015-05-07 12:13                       ` Viresh Kumar
2015-05-07 12:13                         ` Viresh Kumar
2015-05-07 21:30                         ` Stephen Boyd
2015-05-07 21:30                           ` Stephen Boyd
2015-05-08  6:49                           ` Viresh Kumar
2015-05-08  6:49                             ` Viresh Kumar
2015-05-11  1:02       ` Nishanth Menon
2015-05-11  1:02         ` Nishanth Menon
2015-05-12  5:16         ` Viresh Kumar
2015-05-12  5:16           ` Viresh Kumar
2015-05-12 16:04           ` Nishanth Menon
2015-05-12 16:04             ` Nishanth Menon
2015-05-13  5:05             ` Viresh Kumar
2015-05-13  5:05               ` Viresh Kumar
2015-05-13 15:00               ` Nishanth Menon
2015-05-13 15:00                 ` Nishanth Menon
2015-05-13 15:16                 ` Mark Brown
2015-05-13 15:16                   ` Mark Brown
2015-05-13 16:14                   ` Nishanth Menon
2015-05-13 16:14                     ` Nishanth Menon
2015-05-13 16:21                     ` Mark Brown
2015-05-13 16:21                       ` Mark Brown
2015-05-13 16:34                       ` Nishanth Menon
2015-05-13 16:34                         ` Nishanth Menon
2015-05-12 16:19     ` Felipe Balbi [this message]
2015-05-12 16:19       ` Felipe Balbi
2015-05-13  4:45       ` Viresh Kumar
2015-05-13  4:45         ` Viresh Kumar
2015-05-12 21:42     ` Michael Turquette
2015-05-12 21:42       ` Michael Turquette
2015-05-13  8:55       ` Viresh Kumar
2015-05-13  8:55         ` Viresh Kumar
2015-05-13 11:03         ` Mark Brown
2015-05-13 11:03           ` Mark Brown
2015-05-14  0:32           ` Michael Turquette
2015-05-14  0:32             ` Michael Turquette
     [not found]             ` <CAKohpokeKtcJdrBcPZBBPR2zfJgpvuM_=wRaX5q1Uto2qx1oHQ@mail.gmail.com>
2015-05-15 14:15               ` Viresh Kumar
2015-05-15 14:15                 ` Viresh Kumar
2015-05-15 15:43                 ` Nishanth Menon
2015-05-15 15:43                   ` Nishanth Menon
2015-05-15 17:27             ` Rob Herring
2015-05-15 17:27               ` Rob Herring
2015-05-21  6:02         ` Nishanth Menon
2015-05-21  6:02           ` Nishanth Menon
2015-05-22 14:04           ` Viresh Kumar
2015-05-22 14:04             ` Viresh Kumar
2015-05-22 16:04             ` Rob Herring
2015-05-22 16:04               ` Rob Herring
2015-05-22 17:42               ` Nishanth Menon
2015-05-22 17:42                 ` Nishanth Menon
2015-05-26  5:25                 ` Viresh Kumar
2015-05-26  5:25                   ` Viresh Kumar
2015-05-20  0:51     ` Stephen Boyd
2015-05-20  0:51       ` Stephen Boyd
2015-05-20  2:07       ` Viresh Kumar
2015-05-20  2:07         ` Viresh Kumar
2015-05-20 19:39         ` Stephen Boyd
2015-05-20 19:39           ` Stephen Boyd
2015-05-21  4:33           ` Viresh Kumar
2015-05-21  4:33             ` Viresh Kumar
2015-05-25 11:59             ` Viresh Kumar
2015-05-25 11:59               ` Viresh Kumar
2015-04-30 12:08 ` [PATCH V4 2/3] OPP: Allow multiple OPP tables to be passed via DT Viresh Kumar
2015-04-30 12:08   ` Viresh Kumar
2015-05-12 16:09   ` Nishanth Menon
2015-05-12 16:09     ` Nishanth Menon
2015-05-13  4:41     ` Viresh Kumar
2015-05-13  4:41       ` Viresh Kumar
2015-05-20  0:52   ` Stephen Boyd
2015-05-20  0:52     ` Stephen Boyd
2015-04-30 12:08 ` [PATCH V4 3/3] OPP: Add 'opp-next' in operating-points-v2 bindings Viresh Kumar
2015-04-30 12:08   ` Viresh Kumar
2015-05-12 21:47   ` Michael Turquette
2015-05-12 21:47     ` Michael Turquette

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