linux-kernel - Re: [PATCH v4 12/16] mtd: spi-nor: perform a Soft Reset on shutdown

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200511180115.zpbfecwdeuhy5qzr@ti.com>
Date:   Mon, 11 May 2020 23:31:17 +0530
From:   Pratyush Yadav <p.yadav@...com>
To:     <Tudor.Ambarus@...rochip.com>
CC:     <miquel.raynal@...tlin.com>, <richard@....at>, <vigneshr@...com>,
        <broonie@...nel.org>, <Nicolas.Ferre@...rochip.com>,
        <alexandre.belloni@...tlin.com>, <Ludovic.Desroches@...rochip.com>,
        <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <linux-spi@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <nsekhar@...com>
Subject: Re: [PATCH v4 12/16] mtd: spi-nor: perform a Soft Reset on shutdown

On 10/05/20 11:22AM, Tudor.Ambarus@...rochip.com wrote:
> Hi, Pratyush,
> 
> On Friday, April 24, 2020 9:44:06 PM EEST Pratyush Yadav wrote:
> > A Software Reset sequence will return the flash to Power-on-Reset (POR)
> > state. It consists of two commands: Soft Reset Enable and Soft Reset.
> > 
> > Perform a Soft Reset on shutdown on flashes that support it so that the
> > flash can be reset to its initial state and any configurations made by
> > spi-nor (given that they're only done in volatile registers) will be
> > reset. This will hand back the flash in pristine state for any further
> > operations on it.
> 
> Please don't introduce SPI_NOR_SOFT_RESET yet. We should instead determine the 
> software reset sequence by inspecting BFPT[16], bits 13:8.
 
 Ok. Will do.

-- 
Regards,
Pratyush Yadav
Texas Instruments India