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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 7/7] ARM: configs: at91: unselect PIT
Date: Thu, 13 Sep 2018 13:30:24 +0200	[thread overview]
Message-ID: <20180913113024.3571-8-alexandre.belloni@bootlin.com> (raw)
In-Reply-To: <20180913113024.3571-1-alexandre.belloni@bootlin.com>

The PIT is not required anymore to successfully boot and may actually harm
in case preempt-rt is used because the PIT interrupt is shared.
Disable it so the TCB clocksource is used.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
 arch/arm/configs/at91_dt_defconfig | 1 +
 arch/arm/configs/sama5_defconfig   | 1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/arm/configs/at91_dt_defconfig b/arch/arm/configs/at91_dt_defconfig
index 09f262e59fef..f4b253bd05ed 100644
--- a/arch/arm/configs/at91_dt_defconfig
+++ b/arch/arm/configs/at91_dt_defconfig
@@ -19,6 +19,7 @@ CONFIG_ARCH_MULTI_V5=y
 CONFIG_ARCH_AT91=y
 CONFIG_SOC_AT91RM9200=y
 CONFIG_SOC_AT91SAM9=y
+# CONFIG_ATMEL_CLOCKSOURCE_PIT is not set
 CONFIG_AEABI=y
 CONFIG_UACCESS_WITH_MEMCPY=y
 CONFIG_ZBOOT_ROM_TEXT=0x0
diff --git a/arch/arm/configs/sama5_defconfig b/arch/arm/configs/sama5_defconfig
index f2bbc6339ca6..be92871ab155 100644
--- a/arch/arm/configs/sama5_defconfig
+++ b/arch/arm/configs/sama5_defconfig
@@ -20,6 +20,7 @@ CONFIG_ARCH_AT91=y
 CONFIG_SOC_SAMA5D2=y
 CONFIG_SOC_SAMA5D3=y
 CONFIG_SOC_SAMA5D4=y
+# CONFIG_ATMEL_CLOCKSOURCE_PIT is not set
 CONFIG_AEABI=y
 CONFIG_UACCESS_WITH_MEMCPY=y
 CONFIG_ZBOOT_ROM_TEXT=0x0
-- 
2.19.0


  parent reply	other threads:[~2018-09-13 11:30 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 ` [PATCH v7 5/7] ARM: at91: Implement clocksource selection Alexandre Belloni
2018-09-13 11:30 ` [PATCH v7 6/7] ARM: configs: at91: use new TCB timer driver Alexandre Belloni
2018-09-13 11:30 ` Alexandre Belloni [this message]
2018-09-22 11:29 ` [PATCH v7 0/7] clocksource: rework Atmel " 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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