mirror of
https://github.com/torvalds/linux
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3da6d49e84
We can now select clocksource drivers like ti-32k and CONFIG_OF
on ancient machines that still use gettimeoffset, and the combination
results in a link error.
arch/arm/kernel/built-in.o: In function `time_init':
(.init.text+0xc28): undefined reference to `clocksource_probe'
The reason for this is that the Makefile is hidden behind
CONFIG_ARCH_USES_GETTIMEOFFSET, but the Kconfig file is not, and
it has shown up just now because the ti-32k driver was added
and can be selected using COMPILE_TEST on all platforms.
This patch hides the Kconfig menu in CONFIG_ARCH_USES_GETTIMEOFFSET
as well.
Fixes: dfedaf105d "clocksource: ti-32k: make it depend on GENERIC_CLOCKSOURCE"
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Felipe Balbi <balbi@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: http://lkml.kernel.org/r/7579471.4N90fYPQOK@wuerfel
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
330 lines
7.3 KiB
Text
330 lines
7.3 KiB
Text
menu "Clock Source drivers"
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depends on !ARCH_USES_GETTIMEOFFSET
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config CLKSRC_OF
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bool
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select CLKSRC_PROBE
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config CLKSRC_ACPI
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bool
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select CLKSRC_PROBE
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config CLKSRC_PROBE
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bool
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config CLKSRC_I8253
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bool
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config CLKEVT_I8253
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bool
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config I8253_LOCK
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bool
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config CLKBLD_I8253
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def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
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config CLKSRC_MMIO
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bool
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config DIGICOLOR_TIMER
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bool
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config DW_APB_TIMER
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bool
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config DW_APB_TIMER_OF
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bool
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select DW_APB_TIMER
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select CLKSRC_OF
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config ROCKCHIP_TIMER
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bool
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select CLKSRC_OF
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config ARMADA_370_XP_TIMER
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bool
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select CLKSRC_OF
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config MESON6_TIMER
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bool
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select CLKSRC_MMIO
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config ORION_TIMER
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select CLKSRC_OF
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select CLKSRC_MMIO
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bool
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config SUN4I_TIMER
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select CLKSRC_MMIO
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bool
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config SUN5I_HSTIMER
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select CLKSRC_MMIO
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bool
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config TEGRA_TIMER
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bool
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config VT8500_TIMER
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bool
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config CADENCE_TTC_TIMER
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bool
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config ASM9260_TIMER
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bool
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select CLKSRC_MMIO
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select CLKSRC_OF
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config CLKSRC_NOMADIK_MTU
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bool
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depends on (ARCH_NOMADIK || ARCH_U8500)
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select CLKSRC_MMIO
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help
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Support for Multi Timer Unit. MTU provides access
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to multiple interrupt generating programmable
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32-bit free running decrementing counters.
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config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
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bool
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depends on CLKSRC_NOMADIK_MTU
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help
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Use the Multi Timer Unit as the sched_clock.
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config CLKSRC_DBX500_PRCMU
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bool "Clocksource PRCMU Timer"
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depends on UX500_SOC_DB8500
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default y
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help
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Use the always on PRCMU Timer as clocksource
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config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
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bool "Clocksource PRCMU Timer sched_clock"
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depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
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default y
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help
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Use the always on PRCMU Timer as sched_clock
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config CLKSRC_EFM32
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bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
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depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
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select CLKSRC_MMIO
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default ARCH_EFM32
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help
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Support to use the timers of EFM32 SoCs as clock source and clock
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event device.
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config CLKSRC_LPC32XX
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bool
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select CLKSRC_MMIO
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select CLKSRC_OF
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config CLKSRC_PISTACHIO
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bool
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select CLKSRC_OF
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config CLKSRC_TI_32K
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bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
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depends on GENERIC_SCHED_CLOCK
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select CLKSRC_OF if OF
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help
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This option enables support for Texas Instruments 32.768 Hz clocksource
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available on many OMAP-like platforms.
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config CLKSRC_STM32
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bool "Clocksource for STM32 SoCs" if !ARCH_STM32
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depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
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select CLKSRC_MMIO
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config ARM_ARCH_TIMER
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bool
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select CLKSRC_OF if OF
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select CLKSRC_ACPI if ACPI
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config ARM_ARCH_TIMER_EVTSTREAM
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bool "Support for ARM architected timer event stream generation"
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default y if ARM_ARCH_TIMER
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depends on ARM_ARCH_TIMER
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help
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This option enables support for event stream generation based on
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the ARM architected timer. It is used for waking up CPUs executing
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the wfe instruction at a frequency represented as a power-of-2
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divisor of the clock rate.
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The main use of the event stream is wfe-based timeouts of userspace
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locking implementations. It might also be useful for imposing timeout
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on wfe to safeguard against any programming errors in case an expected
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event is not generated.
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This must be disabled for hardware validation purposes to detect any
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hardware anomalies of missing events.
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config ARM_GLOBAL_TIMER
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bool
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select CLKSRC_OF if OF
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help
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This options enables support for the ARM global timer unit
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config ARM_TIMER_SP804
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bool "Support for Dual Timer SP804 module"
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depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
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select CLKSRC_MMIO
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select CLKSRC_OF if OF
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config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
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bool
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depends on ARM_GLOBAL_TIMER
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default y
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help
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Use ARM global timer clock source as sched_clock
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config ARMV7M_SYSTICK
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bool
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select CLKSRC_OF if OF
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select CLKSRC_MMIO
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help
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This options enables support for the ARMv7M system timer unit
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config ATMEL_PIT
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select CLKSRC_OF if OF
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def_bool SOC_AT91SAM9 || SOC_SAMA5
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config ATMEL_ST
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bool
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select CLKSRC_OF
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select MFD_SYSCON
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config CLKSRC_METAG_GENERIC
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def_bool y if METAG
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help
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This option enables support for the Meta per-thread timers.
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config CLKSRC_EXYNOS_MCT
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def_bool y if ARCH_EXYNOS
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depends on !ARM64
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help
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Support for Multi Core Timer controller on Exynos SoCs.
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config CLKSRC_SAMSUNG_PWM
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bool
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help
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This is a new clocksource driver for the PWM timer found in
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Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
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for all devicetree enabled platforms. This driver will be
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needed only on systems that do not have the Exynos MCT available.
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config FSL_FTM_TIMER
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bool
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help
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Support for Freescale FlexTimer Module (FTM) timer.
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config VF_PIT_TIMER
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bool
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help
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Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
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config SYS_SUPPORTS_SH_CMT
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bool
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config MTK_TIMER
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select CLKSRC_OF
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select CLKSRC_MMIO
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bool
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config SYS_SUPPORTS_SH_MTU2
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bool
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config SYS_SUPPORTS_SH_TMU
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bool
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config SYS_SUPPORTS_EM_STI
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bool
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config SH_TIMER_CMT
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bool "Renesas CMT timer driver" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS
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depends on HAS_IOMEM
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default SYS_SUPPORTS_SH_CMT
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help
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This enables build of a clocksource and clockevent driver for
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the Compare Match Timer (CMT) hardware available in 16/32/48-bit
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variants on a wide range of Mobile and Automotive SoCs from Renesas.
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config SH_TIMER_MTU2
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bool "Renesas MTU2 timer driver" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS
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depends on HAS_IOMEM
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default SYS_SUPPORTS_SH_MTU2
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help
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This enables build of a clockevent driver for the Multi-Function
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Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
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This hardware comes with 16 bit-timer registers.
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config SH_TIMER_TMU
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bool "Renesas TMU timer driver" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS
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depends on HAS_IOMEM
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default SYS_SUPPORTS_SH_TMU
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help
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This enables build of a clocksource and clockevent driver for
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the 32-bit Timer Unit (TMU) hardware available on a wide range
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SoCs from Renesas.
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config EM_TIMER_STI
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bool "Renesas STI timer driver" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
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default SYS_SUPPORTS_EM_STI
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help
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This enables build of a clocksource and clockevent driver for
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the 48-bit System Timer (STI) hardware available on a SoCs
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such as EMEV2 from former NEC Electronics.
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config CLKSRC_QCOM
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bool
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config CLKSRC_VERSATILE
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bool "ARM Versatile (Express) reference platforms clock source"
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depends on PLAT_VERSATILE && GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
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select CLKSRC_OF
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default y if MFD_VEXPRESS_SYSREG
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help
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This option enables clock source based on free running
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counter available in the "System Registers" block of
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ARM Versatile, RealView and Versatile Express reference
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platforms.
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config CLKSRC_MIPS_GIC
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bool
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depends on MIPS_GIC
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select CLKSRC_OF
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config CLKSRC_TANGO_XTAL
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bool
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select CLKSRC_OF
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config CLKSRC_PXA
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def_bool y if ARCH_PXA || ARCH_SA1100
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select CLKSRC_OF if OF
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help
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This enables OST0 support available on PXA and SA-11x0
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platforms.
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config H8300_TMR16
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bool
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config H8300_TPU
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bool
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config CLKSRC_IMX_GPT
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bool "Clocksource using i.MX GPT" if COMPILE_TEST
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depends on ARM && CLKDEV_LOOKUP
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select CLKSRC_MMIO
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config CLKSRC_ST_LPC
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bool
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depends on ARCH_STI
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select CLKSRC_OF if OF
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help
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Enable this option to use the Low Power controller timer
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as clocksource.
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endmenu
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