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Date:   Fri, 13 May 2022 13:11:14 +0200
From:   Michael Walle <michael@walle.cc>
To:     Alexander A Sverdlin <alexander.sverdlin@nokia.com>
Cc:     linux-mtd@lists.infradead.org,
        Tudor Ambarus <tudor.ambarus@microchip.com>,
        Pratyush Yadav <p.yadav@ti.com>,
        Miquel Raynal <miquel.raynal@bootlin.com>,
        Richard Weinberger <richard@nod.at>,
        Vignesh Raghavendra <vigneshr@ti.com>,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mtd: spi-nor: Support Dual and Quad Read on Macronix
 mx25u25635f
In-Reply-To: <20220513094759.44185-1-alexander.sverdlin@nokia.com>
References: <20220513094759.44185-1-alexander.sverdlin@nokia.com>
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Hi,

Am 2022-05-13 11:47, schrieb Alexander A Sverdlin:
> From: Alexander Sverdlin <alexander.sverdlin@nokia.com>
> 
> According to datasheet both Dual and Quad Read is supported. The read 
> test
> shows x3.8 speed gain.

Does it have SFDP? Try adding PARSE_SFDP instead of the
NO_SFDP_FLAGS.

Please post an SFDP dump of this flash [1].

-michael

[1] 
https://lore.kernel.org/linux-mtd/4304e19f3399a0a6e856119d01ccabe0@walle.cc/