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config HAVE_NET_DSA
	def_bool y
	depends on NETDEVICES && !S390

# Drivers must select NET_DSA and the appropriate tagging format

config NET_DSA
	tristate "Distributed Switch Architecture"
	depends on HAVE_NET_DSA && NET_SWITCHDEV
	select PHYLIB
	---help---
	  Say Y if you want to enable support for the hardware switches supported
	  by the Distributed Switch Architecture.

if NET_DSA

config NET_DSA_HWMON
	bool "Distributed Switch Architecture HWMON support"
	default y
	depends on HWMON && !(NET_DSA=y && HWMON=m)
	---help---
	  Say Y if you want to expose thermal sensor data on switches supported
	  by the Distributed Switch Architecture.

	  Some of those switches contain thermal sensors. This data is available
	  via the hwmon sysfs interface and exposes the onboard sensors.

# tagging formats
config NET_DSA_TAG_BRCM
	bool

config NET_DSA_TAG_DSA
	bool

config NET_DSA_TAG_EDSA
	bool

config NET_DSA_TAG_TRAILER
	bool

config NET_DSA_TAG_QCA
	bool

endif
nclude/dt-bindings/power/r8a7745-sysc.h parent3c223c19aea85d3dda1416c187915f4a30b04b1f (diff)
cpufreq: intel_pstate: Disable energy efficiency optimization
Some Kabylake desktop processors may not reach max turbo when running in HWP mode, even if running under sustained 100% utilization. This occurs when the HWP.EPP (Energy Performance Preference) is set to "balance_power" (0x80) -- the default on most systems. It occurs because the platform BIOS may erroneously enable an energy-efficiency setting -- MSR_IA32_POWER_CTL BIT-EE, which is not recommended to be enabled on this SKU. On the failing systems, this BIOS issue was not discovered when the desktop motherboard was tested with Windows, because the BIOS also neglects to provide the ACPI/CPPC table, that Windows requires to enable HWP, and so Windows runs in legacy P-state mode, where this setting has no effect. Linux' intel_pstate driver does not require ACPI/CPPC to enable HWP, and so it runs in HWP mode, exposing this incorrect BIOS configuration. There are several ways to address this problem. First, Linux can also run in legacy P-state mode on this system. As intel_pstate is how Linux enables HWP, booting with "intel_pstate=disable" will run in acpi-cpufreq/ondemand legacy p-state mode. Or second, the "performance" governor can be used with intel_pstate, which will modify HWP.EPP to 0. Or third, starting in 4.10, the /sys/devices/system/cpu/cpufreq/policy*/energy_performance_preference attribute in can be updated from "balance_power" to "performance". Or fourth, apply this patch, which fixes the erroneous setting of MSR_IA32_POWER_CTL BIT_EE on this model, allowing the default configuration to function as designed. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Reviewed-by: Len Brown <len.brown@intel.com> Cc: 4.6+ <stable@vger.kernel.org> # 4.6+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/dt-bindings/power/r8a7745-sysc.h')