This patch series introduces support for Dynamic Voltage and Frequency Scaling
(DVFS) for OMAP devices.
For detailed design details, refer to DVFS Documentation.
Pending Work:
1. OMAP4 support
Changes done in this series:
1. Seperated DVFS code from Voltage layer (voltage.c) and introduced DVFS layer
in dvfs.c
2. Added support for frequency throttling and frequency locking (by introducing
frequency list per device)
3. Added changes in omap cpufreq driver for DVFS support
4. Fixed race condition issues in DVFS layer
5. Added documentation for DVFS framework
5. Addressed comments received on V2
V1: https://patchwork.kernel.org/patch/120132/
V2: https://patchwork.kernel.org/patch/290542/
Contributors to conceptualization of the design include
Anand Sawant <[email protected]>
Benoit Cousson <[email protected]>,
Kevin Hilman <[email protected]>,
Paul Wamsley <[email protected]>,
Parthasarathy Basak <[email protected]>
Thara Gopinath <[email protected]>
Vishwanath Sripathy <[email protected]>
This patch series is generated against latest kevin's pm branch and has been
tested on ZOOM3 for mpu, iva and core DVFS.
Thara Gopinath (6):
OMAP: Introduce device specific set rate and get rate in omap_device
structure
OMAP3: Introduce custom set rate and get rate APIs for scalable
OMAP: Disable Smartreflex across DVFS
devices
OMAP3: Introduce voltage domain info in the hwmod structures.
OMAP3: Add voltage dependency table for VDD1.
OMAP2PLUS: Enable various options in defconfig
Vishwanath BS (7):
OMAP: Introduce accessory APIs for DVFS
OMAP: Implement Basic DVFS
OMAP: Introduce dependent voltage domain support
OMAP: Introduce device scale implementation
OMAP3: cpufreq driver changes for DVFS support
OMAP2PLUS: Replace voltage values with Macros
OMAP: Add DVFS Documentation
Documentation/arm/OMAP/omap_dvfs | 111 ++++
arch/arm/configs/omap2plus_defconfig | 4 +
arch/arm/mach-omap2/Makefile | 2 +-
arch/arm/mach-omap2/dvfs.c | 751 +++++++++++++++++++++++++
arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 3 +
arch/arm/mach-omap2/opp3xxx_data.c | 47 +-
arch/arm/mach-omap2/opp4xxx_data.c | 13 +-
arch/arm/mach-omap2/pm.c | 71 +++
arch/arm/mach-omap2/voltage.c | 159 ++----
arch/arm/plat-omap/cpu-omap.c | 35 +-
arch/arm/plat-omap/include/plat/dvfs.h | 34 ++
arch/arm/plat-omap/include/plat/omap_device.h | 9 +
arch/arm/plat-omap/include/plat/voltage.h | 148 +++++
arch/arm/plat-omap/omap_device.c | 58 ++
14 files changed, 1293 insertions(+), 152 deletions(-)
create mode 100644 Documentation/arm/OMAP/omap_dvfs
create mode 100644 arch/arm/mach-omap2/dvfs.c
create mode 100644 arch/arm/plat-omap/include/plat/dvfs.h
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