From: Borislav Petkov <bp@alien8.de>
To: Chris Packham <chris.packham@alliedtelesis.co.nz>
Cc: robh+dt@kernel.org, gregory.clement@free-electrons.com,
jlu@pengutronix.de, linux-arm-kernel@lists.infradead.org,
linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org,
Mauro Carvalho Chehab <mchehab@kernel.org>
Subject: Re: [RESEND PATCH 4/4] EDAC: add support for reduced-width Armada-XP SDRAM
Date: Fri, 11 Aug 2017 11:14:02 +0200 [thread overview]
Message-ID: <20170811091402.GD9432@nazgul.tnic> (raw)
In-Reply-To: <20170807014641.4003-5-chris.packham@alliedtelesis.co.nz>
On Mon, Aug 07, 2017 at 01:46:41PM +1200, Chris Packham wrote:
> Some integrated Armada XP SoCs use a reduced pin count so the width of
> the SDRAM interface is smaller than the traditional discrete SoCs. This
> means that the definition of "full" and "half" width is further reduced.
>
> Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
> ---
> drivers/edac/armada_xp_edac.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/edac/armada_xp_edac.c b/drivers/edac/armada_xp_edac.c
> index 68e88b180928..d8edcaac87c0 100644
> --- a/drivers/edac/armada_xp_edac.c
> +++ b/drivers/edac/armada_xp_edac.c
> @@ -350,6 +350,9 @@ static int armada_xp_mc_edac_probe(struct platform_device *pdev)
> if (armada_xp_mc_edac_read_config(mci))
> return -EINVAL;
>
> + if (of_property_read_bool(pdev->dev.of_node, "marvell,reduced-width"))
> + drvdata->width /= 2;
If the compiler doesn't already convert it to a shift on ARM, you
probably should do
>>= 1;
here, just in case.
With that you can add my
Acked-by: Borislav Petkov <bp@suse.de>
and route it through an ARM tree.
Thx.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
--
next prev parent reply other threads:[~2017-08-11 9:14 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-07 1:46 [RESEND PATCH 0/4] EDAC: support reduce bus width on 98dx3236 Chris Packham
2017-08-07 1:46 ` [RESEND PATCH 1/4] ARM: dts: enable L2 cache parity and ecc on db-xc3-24g4xg board Chris Packham
2017-08-07 1:46 ` [RESEND PATCH 2/4] dt-bindings: add "reduced-width" property for Armada XP SDRAM controller Chris Packham
2017-08-10 20:38 ` Rob Herring
2017-08-10 21:17 ` Chris Packham
2017-08-11 9:34 ` Jan Lübbe
2017-08-07 1:46 ` [RESEND PATCH 3/4] ARM: dts: mvebu: set reduced-width property for SDRAM on 98dx3236 Chris Packham
2017-08-07 1:46 ` [RESEND PATCH 4/4] EDAC: add support for reduced-width Armada-XP SDRAM Chris Packham
2017-08-11 9:14 ` Borislav Petkov [this message]
2017-08-13 21:28 ` Chris Packham
2017-09-20 13:04 ` [RESEND PATCH 0/4] EDAC: support reduce bus width on 98dx3236 Gregory CLEMENT
2017-09-20 15:56 ` Chris Packham
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