From: Alexander Dahl <ada@thorsis.com>
To: linux-arm-kernel@lists.infradead.org
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>,
Ludovic Desroches <ludovic.desroches@microchip.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ARM: configs: at91: unselect PIT
Date: Thu, 10 Oct 2019 13:50:43 +0200 [thread overview]
Message-ID: <1920271.Hgx7Y6QaZs@ada> (raw)
In-Reply-To: <20191009194814.15034-1-alexandre.belloni@bootlin.com>
Am Mittwoch, 9. Oktober 2019, 21:48:14 CEST schrieb Alexandre Belloni:
> 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: Alexander Dahl <ada@thorsis.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
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
prev parent reply other threads:[~2019-10-10 11:51 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
2019-10-10 11:50 ` Alexander Dahl [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1920271.Hgx7Y6QaZs@ada \
--to=ada@thorsis.com \
--cc=alexandre.belloni@bootlin.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=ludovic.desroches@microchip.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).