From mboxrd@z Thu Jan 1 00:00:00 1970 From: l.majewski@samsung.com (Lukasz Majewski) Date: Wed, 14 May 2014 08:17:39 +0200 Subject: [PATCH v4 1/8] cpufreq: cpufreq-cpu0: allow use of optional boost mode frequencies In-Reply-To: References: <1400029876-5830-1-git-send-email-thomas.ab@samsung.com> <1400029876-5830-2-git-send-email-thomas.ab@samsung.com> Message-ID: <20140514081739.0b66587e@amdc2363> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi Viresh, Tomas, > On 14 May 2014 06:41, Thomas Abraham wrote: > > From: Thomas Abraham > > > > 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 > > Cc: Lukasz Majewski > > Signed-off-by: Thomas Abraham > > --- > > .../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. I think that you can rely solely on the CPU_FREQ_BOOST_SW flag if the original author of cpufreq-cpu0.c don't mind. > > > + 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 > > -- Best regards, Lukasz Majewski Samsung R&D Institute Poland (SRPOL) | Linux Platform Group