From: jason@lakedaemon.net (Jason Cooper)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCHv3 4/7] ARM: mvebu: update Armada XP DT for dynamic frequency scaling
Date: Wed, 16 Jul 2014 08:55:27 -0400 [thread overview]
Message-ID: <20140716125527.GY13108@titan.lakedaemon.net> (raw)
In-Reply-To: <1404920715-19834-5-git-send-email-thomas.petazzoni@free-electrons.com>
On Wed, Jul 09, 2014 at 05:45:12PM +0200, Thomas Petazzoni wrote:
> In order to support dynamic frequency scaling:
>
> * the cpuclk Device Tree node needs to be updated to describe a
> second set of registers describing the PMU DFS registers.
>
> * the clock-latency property of the CPUs must be filled, otherwise
> the ondemand and conservative cpufreq governors refuse to work. The
> latency is high because the cost of a frequency transition is quite
> high on those CPUs.
>
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
> ---
> arch/arm/boot/dts/armada-xp-mv78230.dtsi | 2 ++
> arch/arm/boot/dts/armada-xp-mv78260.dtsi | 2 ++
> arch/arm/boot/dts/armada-xp-mv78460.dtsi | 4 ++++
> arch/arm/boot/dts/armada-xp.dtsi | 2 +-
> 4 files changed, 9 insertions(+), 1 deletion(-)
Applied to mvebu/dt
thx,
Jason.
next prev parent reply other threads:[~2014-07-16 12:55 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-09 15:45 [PATCHv3 0/7] cpufreq support for Marvell Armada XP Thomas Petazzoni
2014-07-09 15:45 ` [PATCHv3 1/7] ARM: mvebu: ensure CPU clocks are enabled Thomas Petazzoni
2014-07-16 13:02 ` Jason Cooper
2014-07-09 15:45 ` [PATCHv3 2/7] ARM: mvebu: extend PMSU code to support dynamic frequency scaling Thomas Petazzoni
2014-07-23 23:50 ` Mike Turquette
2014-07-24 6:29 ` Thomas Petazzoni
2014-07-24 11:11 ` Jason Cooper
2014-07-09 15:45 ` [PATCHv3 3/7] clk: mvebu: extend clk-cpu for " Thomas Petazzoni
2014-07-09 15:45 ` [PATCHv3 4/7] ARM: mvebu: update Armada XP DT " Thomas Petazzoni
2014-07-16 12:55 ` Jason Cooper [this message]
2014-07-09 15:45 ` [PATCHv3 5/7] ARM: mvebu: allow enabling of cpufreq on Armada XP Thomas Petazzoni
2014-07-09 15:45 ` [PATCHv3 6/7] ARM: mvebu: update mvebu_v7_defconfig with cpufreq support Thomas Petazzoni
2014-07-16 12:52 ` Jason Cooper
2014-07-09 15:45 ` [PATCHv3 7/7] ARM: configs: add cpufreq-generic in multi_v7_defconfig Thomas Petazzoni
2014-07-16 12:49 ` Jason Cooper
2014-07-13 22:33 ` [PATCHv3 0/7] cpufreq support for Marvell Armada XP Jason Cooper
2014-07-23 11:19 ` Thomas Petazzoni
2014-07-23 11:39 ` Jason Cooper
2014-07-23 11:53 ` Thomas Petazzoni
2014-07-23 16:52 ` Viresh Kumar
2014-07-23 23:53 ` [PATCHv3 3/7] clk: mvebu: extend clk-cpu for dynamic frequency scaling Thomas Petazzoni
2014-07-24 6:33 ` Thomas Petazzoni
2014-07-24 17:52 ` Mike Turquette
2014-07-24 18:24 ` Thomas Petazzoni
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