Commit-ID: 7803dc865bd2963192c623546fb240d01e3e7aa0 Gitweb: https://git.kernel.org/tip/7803dc865bd2963192c623546fb240d01e3e7aa0 Author: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx> AuthorDate: Fri, 26 Apr 2019 23:47:13 +0200 Committer: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx> CommitDate: Thu, 2 May 2019 21:55:58 +0200 ARM: at91: Implement clocksource selection Allow selecting and unselecting the PIT clocksource driver so it doesn't have to be compiled when unused. Signed-off-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx> Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx> --- arch/arm/mach-at91/Kconfig | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig index 903f23c309df..da1d97a06c53 100644 --- a/arch/arm/mach-at91/Kconfig +++ b/arch/arm/mach-at91/Kconfig @@ -107,6 +107,29 @@ config SOC_AT91SAM9 AT91SAM9X35 AT91SAM9XE +comment "Clocksource driver selection" + +config ATMEL_CLOCKSOURCE_PIT + bool "Periodic Interval Timer (PIT) support" + depends on SOC_AT91SAM9 || SOC_SAMA5 + default SOC_AT91SAM9 || SOC_SAMA5 + select ATMEL_PIT + help + Select this to get a clocksource based on the Atmel Periodic Interval + Timer. It has a relatively low resolution and the TC Block clocksource + should be preferred. + +config ATMEL_CLOCKSOURCE_TCB + bool "Timer Counter Blocks (TCB) support" + default SOC_AT91RM9200 || SOC_AT91SAM9 || SOC_SAMA5 + select ATMEL_TCB_CLKSRC + help + Select this to get a high precision clocksource based on a + TC block with a 5+ MHz base clock rate. + On platforms with 16-bit counters, two timer channels are combined + to make a single 32-bit timer. + It can also be used as a clock event device supporting oneshot mode. + config HAVE_AT91_UTMI bool
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