linux-kernel - RE: [PATCH v5 3/7] mtd: spi-nor: add opcodes for octal Read/Write commands

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Date:   Wed, 19 Dec 2018 10:15:00 +0000
From:   Yogesh Narayan Gaur <yogeshnarayan.gaur@....com>
To:     "Tudor.Ambarus@...rochip.com" <Tudor.Ambarus@...rochip.com>,
        "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
        "boris.brezillon@...tlin.com" <boris.brezillon@...tlin.com>,
        "broonie@...nel.org" <broonie@...nel.org>,
        "marek.vasut@...il.com" <marek.vasut@...il.com>,
        "vigneshr@...com" <vigneshr@...com>,
        "linux-spi@...r.kernel.org" <linux-spi@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
CC:     "robh@...nel.org" <robh@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "computersforpeace@...il.com" <computersforpeace@...il.com>,
        "frieder.schrempf@...eet.de" <frieder.schrempf@...eet.de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v5 3/7] mtd: spi-nor: add opcodes for octal Read/Write
 commands

Hi Tudor,

> -----Original Message-----
> From: Tudor.Ambarus@...rochip.com [mailto:Tudor.Ambarus@...rochip.com]
> Sent: Tuesday, December 11, 2018 1:40 PM
> To: Yogesh Narayan Gaur <yogeshnarayan.gaur@....com>; linux-
> mtd@...ts.infradead.org; boris.brezillon@...tlin.com; broonie@...nel.org;
> marek.vasut@...il.com; vigneshr@...com; linux-spi@...r.kernel.org;
> devicetree@...r.kernel.org
> Cc: robh@...nel.org; mark.rutland@....com; shawnguo@...nel.org; linux-
> arm-kernel@...ts.infradead.org; computersforpeace@...il.com;
> frieder.schrempf@...eet.de; linux-kernel@...r.kernel.org
> Subject: Re: [PATCH v5 3/7] mtd: spi-nor: add opcodes for octal Read/Write
> commands
> 
> Hi,
> 
> On 12/11/2018 06:55 AM, Yogesh Narayan Gaur wrote:
> > Thus would going to modify the condition check as below, so that SFDP
> parsing would also be performed when SPI_NOR_OCTAL_READ is set. Correct?
> >
> >         if ((info->flags & (SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
> >              SPI_NOR_OCTAL_READ)) && !(info->flags &
> > SPI_NOR_SKIP_SFDP)) {
> 
> Yes, this is what I was suggesting. On a second thought, we haven't added yet
> support for parsing sfdp to get the octal mode info, so the parsing will be done
> gratuitously. Let's drop this change and add it when adding support for parsing
> octal mode info from sfdp. I'll prepare a patch for this.
> 
> Please rebase on top of spi-nor/next, s/octo/octal in spi-nor.h and correct your
> S-o-b tag and you'll have my R-b tag.
> 
Next version, v6, sent for review[1].
Sorry for late reply, was on leave.

--
Regards
Yogesh Gaur

[1] https://patchwork.ozlabs.org/project/linux-mtd/list/?series=82815

> Thanks Yogesh,
> ta