linux-kernel - Re: [LINUX PATCH v12 3/3] mtd: rawnand: arasan: Add support for Arasan NAND Flash Controller

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Message-ID: <20190619044424.GB28766@xhdnagasure40.xilinx.com>
Date:   Tue, 18 Jun 2019 22:44:24 -0600
From:   Naga Sureshkumar Relli <nagasureshkumarrelli@...il.com>
To:     Miquel Raynal <miquel.raynal@...tlin.com>
Cc:     Naga Sureshkumar Relli <nagasure@...inx.com>,
        "robh@...nel.org" <robh@...nel.org>,
        "martin.lund@...p-it-simple.com" <martin.lund@...p-it-simple.com>,
        "richard@....at" <richard@....at>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Boris Brezillon <boris.brezillon@...tlin.com>,
        "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
        "nagasuresh12@...il.com" <nagasuresh12@...il.com>,
        Michal Simek <michals@...inx.com>,
        "computersforpeace@...il.com" <computersforpeace@...il.com>,
        "dwmw2@...radead.org" <dwmw2@...radead.org>,
        "marek.vasut@...il.com" <marek.vasut@...il.com>
Subject: Re: [LINUX PATCH v12 3/3] mtd: rawnand: arasan: Add support for
 Arasan NAND Flash Controller

On Mon, Jan 28, 2019 at 10:27:39AM +0100, Miquel Raynal wrote:
Hi Miquel,

> Hi Naga,
> 
> Naga Sureshkumar Relli <nagasure@...inx.com> wrote on Mon, 28 Jan 2019
> 06:04:53 +0000:
> 
> > Hi Boris & Miquel,
> > 
> > Could you please provide your thoughts on this driver to support HW-ECC?
> > As I said previously, there is no way to detect errors beyond N bit.
> > I am ok to update the driver based on your inputs.
> 
> We won't support the ECC engine. It simply cannot be used reliably.
> 
> I am working on a generic ECC engine object. It's gonna take a few
> months until it gets merged but after that you could update the
> controller driver to drop any ECC-related function. Although the ECC

Could you please let me know that, when can we expect generic ECC engine
update in mtd NAND?
Based on that, i will plan to update the ARASAN NAND driver along with your
comments mentioned above under this update,
as you know there is a limiation in ARASAN NAND controller to detect
ECC errors.
i am following this series https://patchwork.kernel.org/patch/10838705/

Thanks,
Naga Sureshkumar Relli
> engine part is blocking, raw access still look wrong and the driver
> still needs changes.
> 
> 
> Thanks,
> Miquèl
> 
> ______________________________________________________
> Linux MTD discussion mailing list
> http://lists.infradead.org/mailman/listinfo/linux-mtd/

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