| From: Alexandre Belloni <alexandre.belloni@bootlin.com> |
| Date: Fri, 26 Apr 2019 23:47:13 +0200 |
| Subject: [PATCH 04/10] 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@bootlin.com> |
| Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
| --- |
| arch/arm/mach-at91/Kconfig | 23 +++++++++++++++++++++++ |
| 1 file changed, 23 insertions(+) |
| |
| --- 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 |
| |
