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Date: Tue, 13 Aug 2013 12:08:22 +0200 From: Lukasz Majewski <l.majewski@...sung.com> To: Viresh Kumar <viresh.kumar@...aro.org>, "Rafael J. Wysocki" <rjw@...k.pl>, Zhang Rui <rui.zhang@...el.com>, Eduardo Valentin <eduardo.valentin@...com> Cc: "cpufreq@...r.kernel.org" <cpufreq@...r.kernel.org>, Linux PM list <linux-pm@...r.kernel.org>, Jonghwa Lee <jonghwa3.lee@...sung.com>, Lukasz Majewski <l.majewski@...sung.com>, Lukasz Majewski <l.majewski@...ess.pl>, linux-kernel <linux-kernel@...r.kernel.org>, Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>, Daniel Lezcano <daniel.lezcano@...aro.org>, Kukjin Kim <kgene.kim@...sung.com>, Myungjoo Ham <myungjoo.ham@...sung.com>, durgadoss.r@...el.com Subject: [PATCH v7 4/7] cpufreq:boost:Kconfig: Provide support for software managed BOOST For safety reasons new flag - CONFIG_CPU_FREQ_BOOST_SW has been added. Only after selecting "EXYNOS Frequency Overclocking - Software" Kconfig option the software managed boost is enabled. It also selects thermal subsystem to be compiled in. Thermal is necessary for disabling boost and cooling down the device when overheating detected. Boost _MUST_NOT_ work without thermal subsystem with properly defined overheating temperatures. This option doesn't affect x86's ACPI hardware managed boost support (i.e. Intel, AMD). In this situation boost management is embedded at hardware. Signed-off-by: Lukasz Majewski <l.majewski@...sung.com> Signed-off-by: Myungjoo Ham <myungjoo.ham@...sung.com> --- Changes for v7: - Remove superfluous "default n" definition - Generic CPU_FREQ_BOOST_SW depends on THERMAL Changes for v6: - CPU_FREQ_BOOST_SW [1] is now defined as "invisible" bool option. - Platform dependent ARM_EXYNOS_CPU_FREQ_BOOST_SW config option has been added. It depends on ARM_EXYNOS_CPUFREQ options and selects EXYNOS_THERMAL with the main boost config [1]. Changes for v5: - New patch drivers/cpufreq/Kconfig | 4 ++++ drivers/cpufreq/Kconfig.arm | 15 +++++++++++++++ 2 files changed, 19 insertions(+) diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig index 534fcb8..e3cbf72 100644 --- a/drivers/cpufreq/Kconfig +++ b/drivers/cpufreq/Kconfig @@ -23,6 +23,10 @@ config CPU_FREQ_TABLE config CPU_FREQ_GOV_COMMON bool +config CPU_FREQ_BOOST_SW + bool + depends on THERMAL + config CPU_FREQ_STAT tristate "CPU frequency translation statistics" select CPU_FREQ_TABLE diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm index 0fa204b..6a6d173 100644 --- a/drivers/cpufreq/Kconfig.arm +++ b/drivers/cpufreq/Kconfig.arm @@ -67,6 +67,21 @@ config ARM_EXYNOS5440_CPUFREQ If in doubt, say N. +config ARM_EXYNOS_CPU_FREQ_BOOST_SW + bool "EXYNOS Frequency Overclocking - Software" + depends on ARM_EXYNOS_CPUFREQ + select CPU_FREQ_BOOST_SW + select EXYNOS_THERMAL + help + This driver supports software managed overclocking (BOOST). + It allows usage of special frequencies for Samsung Exynos + processors if thermal conditions are appropriate. + + It reguires, for safe operation, thermal framework with properly + defined trip points. + + If in doubt, say N. + config ARM_HIGHBANK_CPUFREQ tristate "Calxeda Highbank-based" depends on ARCH_HIGHBANK -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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