From: MyungJoo Ham <myungjoo.ham@samsung.com>
To: linux-pm@lists.linux-foundation.org
Cc: Len Brown <len.brown@intel.com>,
Greg Kroah-Hartman <gregkh@suse.de>,
Kyungmin Park <kyungmin.park@samsung.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: [PATCH v4 0/3] DEVFREQ, DVFS framework for non-CPU devices
Date: Fri, 15 Jul 2011 17:11:47 +0900 [thread overview]
Message-ID: <1310717510-19002-1-git-send-email-myungjoo.ham@samsung.com> (raw)
For a usage example, please look at
http://git.infradead.org/users/kmpark/linux-2.6-samsung/shortlog/refs/heads/devfreq
In the above git tree, DVFS (dynamic voltage and frequency scaling) mechanism
is applied to the memory bus of Exynos4210 for Exynos4210-NURI boards.
In the example, the LPDDR2 DRAM frequency changes between 133, 266, and 400MHz
and other related clocks simply follow the determined DDR RAM clock.
The DEVFREQ driver for Exynos4210 memory bus is at
/arch/arm/mach-exynos4/devfreq_bus.c in the git tree.
MyungJoo Ham (3):
PM: Introduce DEVFREQ: generic DVFS framework with device-specific
OPPs
PM / DEVFREQ: add example governors
PM / DEVFREQ: add sysfs interface (including user tickling)
Documentation/ABI/testing/sysfs-devices-power | 50 ++
Documentation/ABI/testing/sysfs-power | 43 ++
drivers/base/power/Makefile | 1 +
drivers/base/power/devfreq.c | 714 +++++++++++++++++++++++++
drivers/base/power/opp.c | 9 +
include/linux/devfreq.h | 119 ++++
kernel/power/Kconfig | 34 ++
7 files changed, 970 insertions(+), 0 deletions(-)
create mode 100644 drivers/base/power/devfreq.c
create mode 100644 include/linux/devfreq.h
--
1.7.4.1
next reply other threads:[~2011-07-15 8:11 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-15 8:11 MyungJoo Ham [this message]
2011-07-15 8:11 ` [PATCH v4 1/3] PM: Introduce DEVFREQ: generic DVFS framework with device-specific OPPs MyungJoo Ham
2011-08-02 18:45 ` Kevin Hilman
2011-08-03 8:06 ` MyungJoo Ham
2011-08-02 21:56 ` Kevin Hilman
2011-08-03 6:02 ` MyungJoo Ham
2011-07-15 8:11 ` [PATCH v4 2/3] PM / DEVFREQ: add example governors MyungJoo Ham
2011-07-15 8:11 ` [PATCH v4 3/3] PM / DEVFREQ: add sysfs interface (including user tickling) MyungJoo Ham
2011-06-09 17:11 ` Pavel Machek
2011-07-19 2:14 ` MyungJoo Ham
2011-07-28 22:10 ` [PATCH v4 0/3] DEVFREQ, DVFS framework for non-CPU devices Rafael J. Wysocki
2011-07-29 4:46 ` Turquette, Mike
2011-07-29 9:10 ` Rafael J. Wysocki
2011-07-30 1:02 ` Turquette, Mike
2011-07-30 21:23 ` Rafael J. Wysocki
2011-08-01 21:47 ` Turquette, Mike
2011-08-01 6:22 ` MyungJoo Ham
2011-08-01 22:01 ` Turquette, Mike
2011-08-02 7:17 ` MyungJoo Ham
2011-08-02 22:02 ` Kevin Hilman
2011-08-03 7:03 ` MyungJoo Ham
2011-08-03 17:31 ` Turquette, Mike
2011-08-03 18:33 ` Kevin Hilman
2011-08-04 8:15 ` MyungJoo Ham
2011-08-04 21:59 ` Turquette, Mike
2011-08-05 6:18 ` MyungJoo Ham
2011-08-08 19:13 ` Turquette, Mike
2011-08-09 5:27 ` MyungJoo Ham
2011-08-11 1:28 ` Turquette, Mike
2011-08-17 10:07 ` MyungJoo Ham
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