linux-kernel - Re: [PATCH v2] mtd: spi-nor: winbond: Add support for W77Q51NW

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Message-Id: <DBNH88949QTH.3I3MSOA019UJL@kernel.org>
Date: Mon, 28 Jul 2025 08:32:55 +0200
From: "Michael Walle" <mwalle@...nel.org>
To: "Marek Vasut" <marek.vasut@...lbox.org>, "Marek Vasut"
 <marek.vasut+renesas@...lbox.org>
Cc: <linux-mtd@...ts.infradead.org>, "Miquel Raynal"
 <miquel.raynal@...tlin.com>, "Pratyush Yadav" <pratyush@...nel.org>,
 "Richard Weinberger" <richard@....at>, "Tudor Ambarus"
 <tudor.ambarus@...aro.org>, "Vignesh Raghavendra" <vigneshr@...com>,
 <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] mtd: spi-nor: winbond: Add support for W77Q51NW

> >> I have limited supply of these devices, so OTP is untested. The flash
> >> does have OTP registers, that's why the .otp entry is there. Why should
> >> I remove it if the OTP registers are in the chip ?
> > 
> > We only add tested features. I'm just the messenger here :o. Anyway,
> > OTP is not really one-time-programmable here, you can write and
> > erase it again as long as you don't lock it, if that was your
> > concern.
>
> So how do I test the OTP without locking it ?

flash_otp_{write,info,dump,erase}, just don't use flash_otp_lock.

-michael

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