From: Maxime Ripard <maxime.ripard@free-electrons.com>
To: Chen-Yu Tsai <wens@csie.org>
Cc: Quentin Schulz <quentin.schulz@free-electrons.com>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Lee Jones <lee.jones@linaro.org>,
Russell King <linux@armlinux.org.uk>,
Jonathan Cameron <jic23@kernel.org>,
knaack.h@gmx.de, Lars-Peter Clausen <lars@metafoo.de>,
Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
"linux-input@vger.kernel.org" <linux-input@vger.kernel.org>,
devicetree <devicetree@vger.kernel.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-iio@vger.kernel.org,
linux-sunxi <linux-sunxi@googlegroups.com>,
Icenowy Zheng <icenowy@aosc.xyz>
Subject: Re: [PATCH v3 02/11] ARM: sun8i: a33: add all operating points
Date: Wed, 22 Mar 2017 08:16:57 +0100 [thread overview]
Message-ID: <20170322071657.omlvxykz5ans357o@lukather> (raw)
In-Reply-To: <CAGb2v64MHK7A-FhZR5KBbDji4VvnhJukqDz0Ude-LjS2YgVVfA@mail.gmail.com>
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On Wed, Mar 22, 2017 at 11:31:54AM +0800, Chen-Yu Tsai wrote:
> On Tue, Mar 21, 2017 at 11:36 PM, Quentin Schulz
> <quentin.schulz@free-electrons.com> wrote:
> > This adds almost all operating points allowed for the A33 as defined by
> > fex files available at:
> > https://github.com/linux-sunxi/sunxi-boards/tree/master/sys_config/a33
> >
> > There are more possible frequencies in this patch than there are in the
> > fex files because the fex files only give an interval of possible
> > frequencies for a given voltage. All supported frequencies are defined
> > in the original driver code in Allwinner vendor tree.
> >
> > There are two missing frequencies though: 1104MHz and 1200MHz which
> > require the CPU to have 1.32V supplied, which is higher than the default
> > voltage.
> >
> > Without all A33 boards defining the CPU regulator, we cannot have these
> > two frequencies as it would cause the CPU to try to run a higher
> > frequency without "overvolting" which is very likely to crash the CPU.
> >
> > Therefore, these two frequencies must be enabled on a per-board basis.
> >
> > Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
>
> Acked-by: Chen-Yu Tsai <wens@csie.org>
Applied, thanks!
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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next prev parent reply other threads:[~2017-03-22 7:18 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-21 15:36 [PATCH v3 00/11] add thermal throttling to Allwinner A33 SoC Quentin Schulz
2017-03-21 15:36 ` [PATCH v3 01/11] ARM: sun8i: a33: add operating-points-v2 property to all nodes Quentin Schulz
2017-03-22 3:32 ` Chen-Yu Tsai
2017-03-22 7:16 ` Maxime Ripard
2017-03-21 15:36 ` [PATCH v3 02/11] ARM: sun8i: a33: add all operating points Quentin Schulz
2017-03-22 3:31 ` Chen-Yu Tsai
2017-03-22 7:16 ` Maxime Ripard [this message]
2017-03-21 15:36 ` [PATCH v3 03/11] ARM: dts: sun8i: sina33: add cpu-supply Quentin Schulz
2017-03-22 3:33 ` Chen-Yu Tsai
2017-03-22 7:17 ` Maxime Ripard
2017-03-21 15:36 ` [PATCH v3 04/11] Documentation: DT: bindings: mfd: add A33 GPADC binding Quentin Schulz
2017-03-23 16:45 ` Lee Jones
2017-03-29 0:31 ` Rob Herring
2017-03-21 15:36 ` [PATCH v3 05/11] Documentation: DT: bindings: input: touschcreen: remove sun4i documentation Quentin Schulz
2017-03-29 7:58 ` Lee Jones
2017-04-03 20:09 ` Dmitry Torokhov
2017-03-21 15:36 ` [PATCH v3 06/11] iio: adc: sun4i-gpadc-iio: move code used in MFD probing to new function Quentin Schulz
2017-03-21 15:36 ` [PATCH v3 07/11] iio: adc: sun4i-gpadc-iio: add support for A33 thermal sensor Quentin Schulz
2017-03-25 17:48 ` Jonathan Cameron
2017-03-21 15:36 ` [PATCH v3 08/11] ARM: dtsi: sun8i: a33: add " Quentin Schulz
2017-03-21 15:36 ` [PATCH v3 09/11] ARM: dtsi: sun8i: a33: add CPU thermal throttling Quentin Schulz
2017-03-21 15:36 ` [PATCH v3 10/11] ARM: sun8i: a33: Add devfreq-based GPU cooling Quentin Schulz
2017-03-21 15:36 ` [PATCH v3 11/11] ARM: sun8i: sina33: add highest OPP of CPUs Quentin Schulz
2017-04-04 8:31 ` [PATCH v3 00/11] add thermal throttling to Allwinner A33 SoC Lee Jones
2017-04-05 9:10 ` Quentin Schulz
2017-04-05 9:57 ` Lee Jones
2017-04-05 11:23 ` Quentin Schulz
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