[PATCH v4 1/8] cpufreq: cpufreq-cpu0: allow use of optional boost mode frequencies

[Viresh Kumar]

On 14 May 2014 06:41, Thomas Abraham <ta.omasab at gmail.com> wrote:
> From: Thomas Abraham <thomas.ab at samsung.com>
>
> Lookup for the optional boost-frequency property in cpu0 node and if
> available, enable support for boost mode frequencies. The frequencies
> usable in boost mode are determined while preparing the cpufreq table
> from the list of operating points available.
>
> Cc: Shawn Guo <shawn.guo at linaro.org>
> Cc: Lukasz Majewski <l.majewski at samsung.com>
> Signed-off-by: Thomas Abraham <thomas.ab at samsung.com>
> ---
>  .../devicetree/bindings/cpufreq/cpufreq-cpu0.txt   |    2 ++
>  drivers/cpufreq/Kconfig                            |   11 +++++++++++
>  drivers/cpufreq/cpufreq-cpu0.c                     |    5 +++++
>  3 files changed, 18 insertions(+), 0 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/cpufreq/cpufreq-cpu0.txt b/Documentation/devicetree/bindings/cpufreq/cpufreq-cpu0.txt
> index f055515..60f321a 100644
> --- a/Documentation/devicetree/bindings/cpufreq/cpufreq-cpu0.txt
> +++ b/Documentation/devicetree/bindings/cpufreq/cpufreq-cpu0.txt
> @@ -19,6 +19,8 @@ Optional properties:
>  - cooling-min-level:
>  - cooling-max-level:
>       Please refer to Documentation/devicetree/bindings/thermal/thermal.txt.
> +- boost-frequency:
> +     Please refer to Documentation/devicetree/bindings/cpufreq/cpufreq-boost.txt
>
>  Examples:
>
> diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig
> index 1fbe11f..0ca4485 100644
> --- a/drivers/cpufreq/Kconfig
> +++ b/drivers/cpufreq/Kconfig
> @@ -194,6 +194,17 @@ config GENERIC_CPUFREQ_CPU0
>
>           If in doubt, say N.
>
> +config GENERIC_CPUFREQ_CPU0_BOOST

Get rid of this.. just not required.

> +       bool "Boost frequency support for generic CPU0 cpufreq driver"
> +       depends on GENERIC_CPUFREQ_CPU0
> +       select CPU_FREQ_BOOST_SW
> +       help
> +         This enables support for software managed overclocking (BOOST). It
> +         allows usage of special frequencies (those beyond the normal operating
> +         frequencies).
> +
> +         If in doubt, say N.
> +
>  menu "x86 CPU frequency scaling drivers"
>  depends on X86
>  source "drivers/cpufreq/Kconfig.x86"
> diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-cpu0.c
> index 1bf6bba..e6c21a8 100644
> --- a/drivers/cpufreq/cpufreq-cpu0.c
> +++ b/drivers/cpufreq/cpufreq-cpu0.c
> @@ -194,6 +194,11 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev)
>                         transition_latency += ret * 1000;
>         }
>
> +#ifdef CONFIG_GENERIC_CPUFREQ_CPU0_BOOST
> +       if (of_find_property(cpu_dev->of_node, "boost-frequency", NULL))

Lets see what happens to the other thread for this.

> +               cpu0_cpufreq_driver.boost_supported = true;
> +#endif
> +
>         ret = cpufreq_register_driver(&cpu0_cpufreq_driver);
>         if (ret) {
>                 pr_err("failed register driver: %d\n", ret);
> --
> 1.7.4.4
>