From: Sam Ravnborg <sam@ravnborg.org>
To: Ahmad Fatoum <a.fatoum@pengutronix.de>
Cc: barebox@lists.infradead.org, lst@pengutronix.de,
ore@pengutronix.de, rcz@pengutronix.de
Subject: Re: [PATCH 2/5] ARM: imx: work around i.MX6UL ERR008958 (ARM errata 814220)
Date: Tue, 23 Apr 2019 19:41:49 +0200 [thread overview]
Message-ID: <20190423174149.GB8801@ravnborg.org> (raw)
In-Reply-To: <20190423171852.26126-3-a.fatoum@pengutronix.de>
Hi Ahmad.
On Tue, Apr 23, 2019 at 07:18:49PM +0200, Ahmad Fatoum wrote:
> The Cortex-A7 in both the i.MX6UL[1] and i.MX6ULL[2] is affected by the
> errata ERR008958 "Arm/MP: 814220—B-Cache maintenance by set/way operations
> can execute out of order".
>
> select ARM_ERRATA_814220 to address this.
>
> [1]: https://www.nxp.com/docs/en/errata/IMX6ULCE.pdf
> [2]: https://www.nxp.com/docs/en/errata/IMX6ULLCE.pdf
>
> Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
> ---
> arch/arm/mach-imx/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
> index d47dd3547712..b15e6dfdfd9b 100644
> --- a/arch/arm/mach-imx/Kconfig
> +++ b/arch/arm/mach-imx/Kconfig
> @@ -164,6 +164,7 @@ config ARCH_IMX6SX
> config ARCH_IMX6UL
> bool
> select ARCH_IMX6
> + select ARM_ERRATA_814220
Selecting a visible option is considered bad practice.
If ARM_ERRATA_814220 was defined without a prompt it would have been
fine.
Sam
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next prev parent reply other threads:[~2019-04-23 17:41 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-23 17:18 [PATCH 0/5] ARM: mmu: misc armv7 cache/MMU fixes Ahmad Fatoum
2019-04-23 17:18 ` [PATCH 1/5] ARM: cache-armv7: add work-around for errata 814220 Ahmad Fatoum
2019-04-23 17:39 ` Sam Ravnborg
2019-04-25 10:38 ` Ahmad Fatoum
2019-04-25 10:02 ` Lucas Stach
2019-04-23 17:18 ` [PATCH 2/5] ARM: imx: work around i.MX6UL ERR008958 (ARM errata 814220) Ahmad Fatoum
2019-04-23 17:41 ` Sam Ravnborg [this message]
2019-04-25 10:39 ` Ahmad Fatoum
2019-04-23 17:18 ` [PATCH 3/5] ARM: cache-armv7: start invalidation from outer levels Ahmad Fatoum
2019-04-23 17:21 ` Ahmad Fatoum
2019-04-25 9:57 ` Lucas Stach
2019-04-23 17:18 ` [PATCH 4/5] ARM: mmu: remove doubly defined macro Ahmad Fatoum
2019-04-23 17:18 ` [PATCH 5/5] ARM: mmu: mark uncached regions as eXecute never on v7 Ahmad Fatoum
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