[RFC 0/4] Add basic support for ASV

[Yadwinder Singh Brar]

gentle ping for suggestions/reviews ..


On Wed, Sep 11, 2013 at 8:14 PM, Yadwinder Singh Brar
<yadi.brar at samsung.com> wrote:
> This series is to add basic common infrastructure for ASV.
>  Basically ASV is a technique used on samsung SoCs, which provides the
> recommended supply voltage for dvfs of arm, mif etc. For a given operating
> frequency, the voltage is recommended based on SoC's ASV group.
> ASV group gets fussed on SoCs during process of mass production.
>
> This series includes:
>  - basic common infrastructue for ASV. It provides common APIs for user drivers
> like cpufreq & devfreq and and an interface for SoC specific drivers to
> register ASV members(instances)
>  - a common platform driver to register ASV members for exynos SoCs
>  - an example providing minimal support (only for ARM ASV) for exynos5250 chips
>
> Its just basic skelton which I wanted to get it reviewed or discussed in
> early stage, before going ahead on further development based on it.
>  Presently example is based on static ASV table provided in SoC specific file,
> which I expects to go into DT. But exactly how and where needs to be discussed,
> may be in next revisions once we get through the basic skelton.
>  Also the location of driver in kernel may also seem odd to someone and
> many more things :).
>
> Looking for your valuable reviews and suggestions.
>
> Thanks
>
> Yadwinder Singh Brar (4):
>   power: asv: Add common ASV support for samsung SoCs
>   power: asv: Add a common asv driver for exynos SoCs.
>   power: asv: Add support for exynos5250
>   arm: exynos5: Register static platform device for ASV.
>
>  arch/arm/mach-exynos/mach-exynos5-dt.c   |    3 +
>  drivers/power/Kconfig                    |    1 +
>  drivers/power/Makefile                   |    1 +
>  drivers/power/asv/Kconfig                |   24 ++++
>  drivers/power/asv/Makefile               |    2 +
>  drivers/power/asv/exynos-asv.c           |   81 ++++++++++++++
>  drivers/power/asv/exynos-asv.h           |   22 ++++
>  drivers/power/asv/exynos5250-asv.c       |  141 ++++++++++++++++++++++++
>  drivers/power/asv/samsung-asv.c          |  175 ++++++++++++++++++++++++++++++
>  include/linux/power/samsung-asv-driver.h |   61 +++++++++++
>  include/linux/power/samsung-asv.h        |   37 +++++++
>  11 files changed, 548 insertions(+), 0 deletions(-)
>  create mode 100644 drivers/power/asv/Kconfig
>  create mode 100644 drivers/power/asv/Makefile
>  create mode 100644 drivers/power/asv/exynos-asv.c
>  create mode 100644 drivers/power/asv/exynos-asv.h
>  create mode 100644 drivers/power/asv/exynos5250-asv.c
>  create mode 100644 drivers/power/asv/samsung-asv.c
>  create mode 100644 include/linux/power/samsung-asv-driver.h
>  create mode 100644 include/linux/power/samsung-asv.h
>
>
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