From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: linux-arm-kernel@lists.infradead.org
Subject: Re: Device tree binding for DVFS table
Date: Wed, 11 Jul 2012 14:44:50 +0000 [thread overview]
Message-ID: <20120711144449.GA23654@sirena.org.uk> (raw)
In-Reply-To: <4FFD87BD.2030206@gmail.com>
On Wed, Jul 11, 2012 at 09:03:41AM -0500, Rob Herring wrote:
> I'd expect a single property with freq/volt pairs or 2 properties for
> freq and voltage where there is a 1:1 relationship (freq N uses voltage N).
I strongly agree - the current proposal is very hard to read due to the
separation between the voltage and frequency values. Some devices do
also need to scale multiple rails together, especially when this gets
used for I/O devices.
I'd also expect to see a range of voltages for each frequency rather
than a specific voltage; usually things are at least characterised with
a specified tolerance.
WARNING: multiple messages have this Message-ID (diff)
From: broonie@opensource.wolfsonmicro.com (Mark Brown)
To: linux-arm-kernel@lists.infradead.org
Subject: Device tree binding for DVFS table
Date: Wed, 11 Jul 2012 15:44:50 +0100 [thread overview]
Message-ID: <20120711144449.GA23654@sirena.org.uk> (raw)
In-Reply-To: <4FFD87BD.2030206@gmail.com>
On Wed, Jul 11, 2012 at 09:03:41AM -0500, Rob Herring wrote:
> I'd expect a single property with freq/volt pairs or 2 properties for
> freq and voltage where there is a 1:1 relationship (freq N uses voltage N).
I strongly agree - the current proposal is very hard to read due to the
separation between the voltage and frequency values. Some devices do
also need to scale multiple rails together, especially when this gets
used for I/O devices.
I'd also expect to see a range of voltages for each frequency rather
than a specific voltage; usually things are at least characterised with
a specified tolerance.
next prev parent reply other threads:[~2012-07-11 14:44 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-11 12:56 Device tree binding for DVFS table Prashant Gaikwad
2012-07-11 13:08 ` Prashant Gaikwad
2012-07-11 14:03 ` Rob Herring
2012-07-11 14:03 ` Rob Herring
2012-07-11 14:44 ` Mark Brown [this message]
2012-07-11 14:44 ` Mark Brown
2012-07-11 20:04 ` Mike Turquette
2012-07-11 20:04 ` Mike Turquette
2012-07-12 4:14 ` Prashant Gaikwad
2012-07-12 4:26 ` Prashant Gaikwad
2012-07-12 14:10 ` Peter De Schrijver
2012-07-12 14:10 ` Peter De Schrijver
2012-07-12 17:10 ` Mike Turquette
2012-07-12 17:10 ` Mike Turquette
2012-07-12 17:15 ` Mark Brown
2012-07-12 17:15 ` Mark Brown
2012-07-13 10:34 ` Peter De Schrijver
2012-07-13 10:34 ` Peter De Schrijver
2012-07-13 17:25 ` Mike Turquette
2012-07-13 17:25 ` Mike Turquette
2012-07-12 4:17 ` Prashant Gaikwad
2012-07-12 4:29 ` Prashant Gaikwad
2012-07-12 15:23 ` Mark Brown
2012-07-12 15:23 ` Mark Brown
2012-07-12 17:01 ` Mike Turquette
2012-07-12 17:01 ` Mike Turquette
2012-07-12 8:19 ` Peter De Schrijver
2012-07-12 8:19 ` Peter De Schrijver
2012-07-12 4:08 ` Prashant Gaikwad
2012-07-12 4:20 ` Prashant Gaikwad
2012-07-13 18:30 ` Prashant Gaikwad
2012-07-13 18:42 ` Prashant Gaikwad
2012-07-15 21:40 ` Mark Brown
2012-07-15 21:40 ` Mark Brown
2012-07-15 23:42 ` Rob Herring
2012-07-15 23:42 ` Rob Herring
2012-07-16 18:36 ` Turquette, Mike
2012-07-16 18:36 ` Turquette, Mike
2012-07-17 12:37 ` Prashant Gaikwad
2012-07-17 12:49 ` Prashant Gaikwad
2012-07-17 13:20 ` Mark Brown
2012-07-17 13:20 ` Mark Brown
2012-07-17 14:22 ` Prashant Gaikwad
2012-07-17 14:34 ` Prashant Gaikwad
2012-07-17 14:37 ` Mark Brown
2012-07-17 14:37 ` Mark Brown
2012-07-18 12:46 ` Prashant Gaikwad
2012-07-18 12:58 ` Prashant Gaikwad
2012-07-18 21:19 ` Mark Brown
2012-07-18 21:19 ` Mark Brown
2012-07-18 17:08 ` Shawn Guo
2012-07-18 17:08 ` Shawn Guo
2012-07-11 13:08 함명주
2012-07-11 13:08 ` 함명주
2012-07-11 13:49 ` Peter De Schrijver
2012-07-11 13:49 ` Peter De Schrijver
2012-07-11 13:49 ` Peter De Schrijver
2012-07-11 13:49 ` Peter De Schrijver
2012-07-12 4:22 ` Prashant Gaikwad
2012-07-12 4:34 ` Prashant Gaikwad
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