From: Daniel Lezcano <daniel.lezcano@linaro.org>
To: tglx@linutronix.de
Cc: linux-kernel@vger.kernel.org,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Nicolas Ferre <nicolas.ferre@microchip.com>,
Ludovic Desroches <ludovic.desroches@microchip.com>,
Russell King <linux@armlinux.org.uk>,
linux-arm-kernel@lists.infradead.org (moderated list:ARM
SUB-ARCHITECTURES)
Subject: [PATCH 10/15] ARM: at91: Implement clocksource selection
Date: Thu, 9 May 2019 13:10:43 +0200 [thread overview]
Message-ID: <20190509111048.11151-10-daniel.lezcano@linaro.org> (raw)
In-Reply-To: <20190509111048.11151-1-daniel.lezcano@linaro.org>
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
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: Daniel Lezcano <daniel.lezcano@linaro.org>
---
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
--
2.17.1
next prev parent reply other threads:[~2019-05-09 11:12 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-09 11:08 [GIT PULL] timer drivers for 5.2 Daniel Lezcano
2019-05-09 11:10 ` [PATCH 01/15] clocksource/drivers/sun4i: Add a compatible for suniv Daniel Lezcano
2019-05-09 11:10 ` [PATCH 02/15] clocksource/drivers/sp804: Add COMPILE_TEST to CONFIG_ARM_TIMER_SP804 Daniel Lezcano
2019-06-18 12:07 ` Helmut Grohne
2019-05-09 11:10 ` [PATCH 03/15] clocksource/drivers/tegra: Rework for compensation of suspend time Daniel Lezcano
2019-05-09 11:10 ` [PATCH 04/15] clocksource/drivers/timer-milbeaut: Fix to enable one-shot timer Daniel Lezcano
2019-05-09 11:10 ` [PATCH 05/15] clocksource/drivers/timer-milbeaut: Add shutdown function Daniel Lezcano
2019-05-09 11:10 ` [PATCH 06/15] clocksource/drivers/timer-milbeaut: Cleanup common register accesses Daniel Lezcano
2019-05-09 11:10 ` [PATCH 07/15] ARM: at91: move SoC specific definitions to SoC folder Daniel Lezcano
2019-05-09 11:10 ` [PATCH 08/15] clocksource/drivers/tcb_clksrc: Stop depending on atmel_tclib Daniel Lezcano
2019-05-09 11:10 ` [PATCH 09/15] clocksource/drivers/tcb_clksrc: Use tcb as sched_clock Daniel Lezcano
2019-05-09 11:10 ` Daniel Lezcano [this message]
2019-05-09 11:10 ` [PATCH 11/15] clocksource/drivers/tcb_clksrc: Move Kconfig option Daniel Lezcano
2019-05-09 11:10 ` [PATCH 12/15] clocksource/drivers/timer-atmel-pit: Rework " Daniel Lezcano
2019-05-09 11:10 ` [PATCH 13/15] clocksource/drivers/tcb_clksrc: Rename the file for consistency Daniel Lezcano
2019-05-09 11:10 ` [PATCH 14/15] clocksource/drivers/timer-atmel-tcb: Convert tc_clksrc_suspend|resume() to static Daniel Lezcano
2019-05-09 11:10 ` [PATCH 15/15] misc: atmel_tclib: Do not probe already used TCBs Daniel Lezcano
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