From: maxime.ripard@free-electrons.com (Maxime Ripard)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/3] Simple DVFS support for Allwinner A64 SoC
Date: Mon, 25 Sep 2017 12:27:44 +0200 [thread overview]
Message-ID: <20170925102744.qixfwlheeimemhcf@flea.home> (raw)
In-Reply-To: <27EF78BD-6285-4D8D-AA65-8294D797E2FB@aosc.io>
On Mon, Sep 25, 2017 at 10:12:09AM +0000, Icenowy Zheng wrote:
> ? 2017?9?25? GMT+08:00 ??6:10:27, Maxime Ripard <maxime.ripard@free-electrons.com> ??:
> >Hi,
> >
> >On Sat, Sep 23, 2017 at 12:15:28AM +0000, Icenowy Zheng wrote:
> >> This patchset imports simple DVFS support for Allwinner A64 SoC.
> >>
> >> As the thermal sensor driver is not yet implemented and some boards
> >> have still no AXP PMIC support, now only two OPPs are present --
> >> 648MHz at 1.04V and 816MHz at 1.1V to prevent overheat or undervoltage.
> >>
> >> PATCH 1 is a fix to the CCU driver of A64, and the remaining patches
> >> set up the device tree bits of the DVFS on Pine64.
> >
> >How has this been tested?
> >
> >What tasks did you run, with what governor, etc...
>
> I only tested manual frequency switching between 648MHz and
> 816MHz, and tested the PLL stuck issue by change the OPPs to
> some random value.
Ideally, we should test that it's actually reliable. Poorly chosen
OPPs might lead to corrupt data that you might not get before a while.
Please test using:
https://linux-sunxi.org/Hardware_Reliability_Tests#Reliability_of_cpufreq_voltage.2Ffrequency_settings
And post the report.
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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next prev parent reply other threads:[~2017-09-25 10:27 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-23 0:15 [PATCH 0/3] Simple DVFS support for Allwinner A64 SoC Icenowy Zheng
2017-09-23 0:15 ` [PATCH 1/3] clk: sunxi-ng: add mux and pll notifiers for A64 CPU clock Icenowy Zheng
2017-09-28 10:27 ` Maxime Ripard
2017-09-28 10:42 ` icenowy at aosc.io
2017-09-28 14:20 ` Maxime Ripard
2017-09-28 14:24 ` icenowy at aosc.io
2017-09-28 14:31 ` Maxime Ripard
2017-09-23 0:15 ` [PATCH 2/3] arm64: allwinner: a64: add CPU opp table Icenowy Zheng
2017-09-25 17:38 ` [linux-sunxi] " Samuel Holland
2017-09-23 0:15 ` [PATCH 3/3] arm64: allwinner: a64: set CPU regulator for Pine64 Icenowy Zheng
2017-09-25 10:10 ` [PATCH 0/3] Simple DVFS support for Allwinner A64 SoC Maxime Ripard
2017-09-25 10:12 ` Icenowy Zheng
2017-09-25 10:27 ` Maxime Ripard [this message]
2017-09-25 10:29 ` [linux-sunxi] " Icenowy Zheng
2017-09-25 10:43 ` Maxime Ripard
2017-09-27 11:51 ` icenowy at aosc.io
2017-09-28 10:28 ` Maxime Ripard
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