From: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: Ludovic Desroches <ludovic.desroches@microchip.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Alexandre Belloni <alexandre.belloni@bootlin.com>
Subject: [PATCH] ARM: configs: at91: unselect PIT
Date: Wed, 9 Oct 2019 21:48:14 +0200 [thread overview]
Message-ID: <20191009194814.15034-1-alexandre.belloni@bootlin.com> (raw)
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 63d09e61b6dc..7e5ffdab47da 100644
--- a/arch/arm/configs/at91_dt_defconfig
+++ b/arch/arm/configs/at91_dt_defconfig
@@ -18,6 +18,7 @@ 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 7255709d46ea..ee7db6cedaa6 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
--
2.21.0
next reply other threads:[~2019-10-09 19:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-09 19:48 Alexandre Belloni [this message]
2019-10-10 8:44 ` [PATCH] ARM: configs: at91: unselect PIT Nicolas.Ferre
2019-10-10 11:50 ` Alexander Dahl
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