linux-kernel - Re: [PATCH 3/4] dt-bindings: mtd: macronix,mx25l12833f: add SPI-NOR chip

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 for Android: free password hash cracker in your pocket

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

Date: Fri, 28 Jun 2024 19:45:50 +0200
From: "Michael Walle" <mwalle@...nel.org>
To: "Erez" <erezgeva2@...il.com>
Cc: "Conor Dooley" <conor@...nel.org>, "Erez Geva" <erezgeva@...ime.org>,
 <linux-mtd@...ts.infradead.org>, "Tudor Ambarus"
 <tudor.ambarus@...aro.org>, "Pratyush Yadav" <pratyush@...nel.org>,
 <linux-kernel@...r.kernel.org>, "Miquel Raynal"
 <miquel.raynal@...tlin.com>, "Richard Weinberger" <richard@....at>,
 "Vignesh Raghavendra" <vigneshr@...com>, <devicetree@...r.kernel.org>, "Rob
 Herring" <robh@...nel.org>, "Krzysztof Kozlowski" <krzk+dt@...nel.org>,
 "Conor Dooley" <conor+dt@...nel.org>
Subject: Re: [PATCH 3/4] dt-bindings: mtd: macronix,mx25l12833f: add SPI-NOR
 chip

> What is the kernel policy regarding obsolete flash chips?
> Macronix annonce on end of life of mx25l12805d in 2010.

Which doesn't mean there are no boards using it. But EOL in 2010
might be a strong argument to remove it. But I don't see the need
for it, yet.

> > Also please have a look at
> > https://docs.kernel.org/driver-api/mtd/spi-nor.html
>
> The new mx25l12833f supports SFDP, the obsolete mx25l12805d does not.
> I did manage to read the SFDP, though I do not have a copy of it (I do
> not have the hardware any more).

So how would you test newer versions of this series?

> To my best knowledge SFDP table do not contain information on OTP,

That's true, but we need it to detect flashes during runtime in the
future. Imagine sometime later, there's a third flash with this
exact ID, then we need to have the SFDP to figure out if there are
any differences between yours and the new one.

-michael