From: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Nicolas Ferre <nicolas.ferre@microchip.com>,
Alexander Dahl <ada@thorsis.com>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Alexandre Belloni <alexandre.belloni@bootlin.com>
Subject: [PATCH v7 5/7] ARM: at91: Implement clocksource selection
Date: Thu, 13 Sep 2018 13:30:22 +0200 [thread overview]
Message-ID: <20180913113024.3571-6-alexandre.belloni@bootlin.com> (raw)
In-Reply-To: <20180913113024.3571-1-alexandre.belloni@bootlin.com>
Allow selecting and unselecting the PIT clocksource driver so it doesn't
have to be compile when unused.
Tested-by: Alexander Dahl <ada@thorsis.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
arch/arm/mach-at91/Kconfig | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index 903f23c309df..fa493a86e2bb 100644
--- a/arch/arm/mach-at91/Kconfig
+++ b/arch/arm/mach-at91/Kconfig
@@ -107,6 +107,31 @@ 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"
+ depends on SOC_AT91RM9200 || SOC_AT91SAM9 || SOC_SAMA5 || COMPILE_TEST
+ default SOC_AT91RM9200 || SOC_AT91SAM9 || SOC_SAMA5
+ depends on !ATMEL_TCLIB
+ select ATMEL_ARM_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
--
2.19.0
next prev parent reply other threads:[~2018-09-13 11:31 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-13 11:30 [PATCH v7 0/7] clocksource: rework Atmel TCB timer driver Alexandre Belloni
2018-09-13 11:30 ` [PATCH v7 1/7] ARM: at91: add TCB registers definitions Alexandre Belloni
2018-09-13 11:30 ` [PATCH v7 2/7] clocksource/drivers: Add a new driver for the Atmel ARM TC blocks Alexandre Belloni
2018-09-24 1:59 ` Daniel Lezcano
2018-09-25 21:16 ` Alexandre Belloni
2018-10-01 21:24 ` Daniel Lezcano
2018-10-03 22:26 ` Alexandre Belloni
2018-09-13 11:30 ` [PATCH v7 3/7] clocksource/drivers: timer-atmel-tcb: add clockevent device on separate channel Alexandre Belloni
2018-09-13 11:30 ` [PATCH v7 4/7] clocksource/drivers: atmel-pit: make option silent Alexandre Belloni
2018-09-13 11:30 ` Alexandre Belloni [this message]
2018-09-13 11:30 ` [PATCH v7 6/7] ARM: configs: at91: use new TCB timer driver Alexandre Belloni
2018-09-13 11:30 ` [PATCH v7 7/7] ARM: configs: at91: unselect PIT Alexandre Belloni
2018-09-22 11:29 ` [PATCH v7 0/7] clocksource: rework Atmel TCB timer driver Daniel Lezcano
2018-09-25 20:14 ` Alexandre Belloni
2018-11-08 12:43 ` Sebastian Andrzej Siewior
2018-11-08 14:09 ` Alexandre Belloni
2018-11-08 14:30 ` Sebastian Andrzej Siewior
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