Hello,
On Fri, Feb 20, 2015 at 07:01:03PM +0100, Maxime Coquelin wrote:
quoted hunk ↗ jump to hunk
This patch adds clocksource support for ARMv7-M's System timer,
also known as SysTick.
Signed-off-by: Maxime Coquelin <mcoquelin.stm32@gmail.com>
---
drivers/clocksource/Kconfig | 7 ++++
drivers/clocksource/Makefile | 1 +
drivers/clocksource/armv7m_systick.c | 78 ++++++++++++++++++++++++++++++++++++
3 files changed, 86 insertions(+)
create mode 100644 drivers/clocksource/armv7m_systick.c
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index fc01ec2..fb6011e 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -124,6 +124,13 @@ config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
help
Use ARM global timer clock source as sched_clock
+config ARMV7M_SYSTICK
+ bool
I assume this symbol is enabled later in the series. Would it make sense
to allow enabing the symbol for compile test coverage?
+ select CLKSRC_OF if OF
What happens if ARMV7M_SYSTICK=y but OF=n? Doesn't the driver fail to
compile?
quoted hunk ↗ jump to hunk
+ select CLKSRC_MMIO
+ help
+ This options enables support for the ARMv7M system timer unit
the right spelling is ARMv7-M.
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |