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clocksource/drivers/versatile: Allow CONFIG_CLKSRC_VERSATILE to be disabled

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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
This commit is contained in:
Rob Herring 2020-04-17 16:20:45 -05:00 committed by Daniel Lezcano
parent 25259f7a5d
commit bfed0eded1
1 changed files with 2 additions and 3 deletions
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5
drivers/clocksource/Kconfig
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@ -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