Commit bfed0ede authored Apr 17, 2020 by Rob Herring Committed by Daniel Lezcano Apr 27, 2020

clocksource/drivers/versatile: Allow CONFIG_CLKSRC_VERSATILE to be disabled



The timer-versatile driver provides a sched_clock for certain Arm Ltd.
reference platforms. Specifically, it is used on Versatile and 32-bit
VExpress. It is not needed for those platforms with an arch timer (all
the 64-bit ones) yet CONFIG_MFD_VEXPRESS_SYSREG does still need to be
enabled. In that case, the timer-versatile can only be disabled when
COMPILE_TEST is enabled which is not desirable. Let's use the sub-arch
kconfig symbols instead.

Realview platforms don't have the sysregs that this driver uses so
correct the help text.

Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20200417212045.16917-1-robh@kernel.org

parent 25259f7a

drivers/clocksource/Kconfig

+2 −3

Original line number	Diff line number	Diff line
		@@ -562,12 +562,11 @@ config CLKSRC_VERSATILE
		bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST
		depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
		select TIMER_OF
		default y if MFD_VEXPRESS_SYSREG
		default y if (ARCH_VEXPRESS \|\| ARCH_VERSATILE) && ARM
		help
		This option enables clock source based on free running
		counter available in the "System Registers" block of
		ARM Versatile, RealView and Versatile Express reference
		platforms.
		ARM Versatile and Versatile Express reference platforms.

		config CLKSRC_MIPS_GIC
		bool

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