Thread (24 messages) 24 messages, 4 authors, 2014-07-24

[PATCHv3 4/7] ARM: mvebu: update Armada XP DT for dynamic frequency scaling

From: Jason Cooper <hidden>
Date: 2014-07-16 12:55:27
Also in: linux-pm

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 <redacted>
---
 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.
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