From: <Nicolas.Ferre@microchip•com>
To: <alexandre.belloni@bootlin•com>
Cc: Ludovic.Desroches@microchip•com, linux-kernel@vger•kernel.org,
linux-arm-kernel@lists•infradead.org
Subject: Re: [PATCH] ARM: configs: at91: unselect PIT
Date: Thu, 10 Oct 2019 08:44:33 +0000 [thread overview]
Message-ID: <7d1be31b-dde0-d42b-745e-a83585ac379b@microchip.com> (raw)
In-Reply-To: <20191009194814.15034-1-alexandre.belloni@bootlin.com>
On 09/10/2019 at 21:48, Alexandre Belloni wrote:
> 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>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip•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
>
--
Nicolas Ferre
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next prev parent reply other threads:[~2019-10-10 8:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-09 19:48 [PATCH] ARM: configs: at91: unselect PIT Alexandre Belloni
2019-10-10 8:44 ` Nicolas.Ferre [this message]
2019-10-10 11:50 ` Alexander Dahl
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