From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422793Ab3LTOZd (ORCPT ); Fri, 20 Dec 2013 09:25:33 -0500 Received: from mailout1.samsung.com ([203.254.224.24]:32721 "EHLO mailout1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1422762Ab3LTOZ2 (ORCPT ); Fri, 20 Dec 2013 09:25:28 -0500 X-AuditID: cbfee61b-b7f456d000006dfd-e4-52b45357bd4e From: Lukasz Majewski To: Viresh Kumar , "Rafael J. Wysocki" , Eduardo Valentin Cc: "cpufreq@vger.kernel.org" , Linux PM list , Jonghwa Lee , Lukasz Majewski , Lukasz Majewski , linux-kernel , Bartlomiej Zolnierkiewicz , Myungjoo Ham , durgadoss.r@intel.com, Zhang Rui , linux-samsung-soc@vger.kernel.org Subject: [PATCH v12 3/7] cpufreq:boost:Kconfig: Provide support for software managed BOOST Date: Fri, 20 Dec 2013 15:24:51 +0100 Message-id: <1387549495-809-4-git-send-email-l.majewski@samsung.com> X-Mailer: git-send-email 1.7.10.4 In-reply-to: <1387549495-809-1-git-send-email-l.majewski@samsung.com> References: <1370502472-7249-1-git-send-email-l.majewski@samsung.com> <1387549495-809-1-git-send-email-l.majewski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrPLMWRmVeSWpSXmKPExsVy+t9jQd3w4C1BBgt3sFtsnLGe1eJp0w92 i76fV5gt1uz/yWTRefYJs8WbR9wWbx5uZrS4vGsOm8Xn3iOMFjPO72OyuN24gs3izOlLrBZP HvaxWWz86uHA57F4z0smjzvX9rB5rJv2ltljy9V2Fo++LasYPY7f2M7k8XmTXAB7FJdNSmpO Zllqkb5dAlfG/FXLmAraRSs2TGtgbWCcJ9jFyMkhIWAicXz5aTYIW0ziwr31QDYXh5DAdEaJ RSs/MkM4XUwSBza/YgGpYhPQk/h89ykTiC0i0Mwoceu5H0gRs8AlZomOpVeZQRLCAjESjWsP MYLYLAKqEk1NG4BsDg5eAReJ6+cEILYpSnQ/mwC2mVPAVWL12jtg5UICDYwSTRtVJzDyLmBk WMUomlqQXFCclJ5rpFecmFtcmpeul5yfu4kRHKzPpHcwrmqwOMQowMGoxMNboL85SIg1say4 MvcQowQHs5II72efLUFCvCmJlVWpRfnxRaU5qcWHGKU5WJTEeQ+2WgcKCaQnlqRmp6YWpBbB ZJk4OKUaGKM+ePNMTQhcEVjueOjxpKWilU2rV66WaXb8GP24/wan9JGSn8eepcf5NqWezeGc ZGV/arPGBNv5XW7/33i9+5OWY50el1hq15q6bcmdX4WMS9pmrH9feTrK74PzzZgdteq7N7aV m24r2nPeX2qGygoLg4OiqlbG3yc9nr1VZGeB0PlFci16SkosxRmJhlrMRcWJAOxRzSVSAgAA Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 in hardware. Signed-off-by: Lukasz Majewski Signed-off-by: Myungjoo Ham Acked-by: Viresh Kumar --- Changes for v12: - None Changes for v11: - None Changes for v10: - None Changes for v9: - None Changes for v8: - None 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 38093e2..c8818c1 100644 --- a/drivers/cpufreq/Kconfig +++ b/drivers/cpufreq/Kconfig @@ -20,6 +20,10 @@ if CPU_FREQ config CPU_FREQ_GOV_COMMON bool +config CPU_FREQ_BOOST_SW + bool + depends on THERMAL + config CPU_FREQ_STAT tristate "CPU frequency translation statistics" default y diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm index ce52ed9..25599d6 100644 --- a/drivers/cpufreq/Kconfig.arm +++ b/drivers/cpufreq/Kconfig.arm @@ -64,6 +64,21 @@ 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