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From: "Michael Walle" <mwalle@kernel.org>
To: "Cheng Ming Lin" <linchengming884@gmail.com>
Cc: "Pratyush Yadav" <pratyush@kernel.org>,
	"Takahiro Kuwano" <takahiro.kuwano@infineon.com>,
	"Miquel Raynal" <miquel.raynal@bootlin.com>,
	"Richard Weinberger" <richard@nod.at>,
	"Vignesh Raghavendra" <vigneshr@ti.com>,
	<linux-mtd@lists.infradead.org>, <linux-kernel@vger.kernel.org>,
	<alvinzhou@mxic.com.tw>,
	"Cheng Ming Lin" <chengminglin@mxic.com.tw>
Subject: Re: [PATCH] mtd: spi-nor: macronix: Document support for additional flash aliases
Date: Wed, 15 Apr 2026 12:07:55 +0200	[thread overview]
Message-ID: <DHTN915DJBSP.15QT83JYA4LWA@kernel.org> (raw)
In-Reply-To: <CAAyq3SbbyT_wYmVNqgyK4J7C34q2beXGOa+hN0hpi5JNUBfrjw@mail.gmail.com>


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Hi

thanks for providing the dumps.

> 1. MX25L51245G
..
> zynq> sha256sum /sys/bus/spi/devices/spi2.0/spi-nor/sfdp
> 7281b0a355a4497ec6256c57b81c3d2b303bc34220cb77790278d719d7465276
> /sys/bus/spi/devices/spi2.0/spi-nor/sfdp
>
> 2. MX25L51273G
..
> zynq> sha256sum /sys/bus/spi/devices/spi2.0/spi-nor/sfdp
> 7281b0a355a4497ec6256c57b81c3d2b303bc34220cb77790278d719d7465276
> /sys/bus/spi/devices/spi2.0/spi-nor/sfdp

Different parts, same ID, same SFDP :(( Are they the same from a
software perspective? With Macronix reusing the same ID for
different flash chips it makes software support for different
features really hard.  And with even with the SFDP being the very
same, it's impossible to distinguish them during auto probing.

-michael

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  reply	other threads:[~2026-04-15 10:08 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-10  9:10 [PATCH] mtd: spi-nor: macronix: Document support for additional flash aliases Cheng Ming Lin
2026-04-10  9:26 ` Michael Walle
2026-04-10 10:00   ` Cheng Ming Lin
2026-04-14  7:18   ` Cheng Ming Lin
2026-04-15 10:07     ` Michael Walle [this message]
2026-04-15 11:01 ` Michael Walle

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