From: Miquel Raynal <miquel.raynal@bootlin.com>
To: shiva.linuxworks@gmail.com,
Miquel Raynal <miquel.raynal@bootlin.com>,
Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>,
Boris Brezillon <boris.brezillon@collabora.com>,
Chuanhong Guo <gch981213@gmail.com>,
Frieder Schrempf <frieder.schrempf@kontron.de>,
linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org
Cc: Shivamurthy Shastri <sshivamurthy@micron.com>
Subject: Re: [PATCH v7 4/6] mtd: spinand: micron: identify SPI NAND device with Continuous Read mode
Date: Thu, 12 Mar 2020 22:33:16 +0100 [thread overview]
Message-ID: <20200312213316.7311-1-miquel.raynal@bootlin.com> (raw)
In-Reply-To: <20200311175735.2007-5-sshivamurthy@micron.com>
On Wed, 2020-03-11 at 17:57:33 UTC, shiva.linuxworks@gmail.com wrote:
> From: Shivamurthy Shastri <sshivamurthy@micron.com>
>
> Add SPINAND_HAS_CR_FEAT_BIT flag to identify the SPI NAND device with
> the Continuous Read mode.
>
> Some of the Micron SPI NAND devices have the "Continuous Read" feature
> enabled by default, which does not fit the subsystem needs.
>
> In this mode, the READ CACHE command doesn't require the starting column
> address. The device always output the data starting from the first
> column of the cache register, and once the end of the cache register
> reached, the data output continues through the next page. With the
> continuous read mode, it is possible to read out the entire block using
> a single READ command, and once the end of the block reached, the output
> pins become High-Z state. However, during this mode the read command
> doesn't output the OOB area.
>
> Hence, we disable the feature at probe time.
>
> Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com>
> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next, thanks.
Miquel
next prev parent reply other threads:[~2020-03-12 21:33 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-11 17:57 [PATCH v7 0/6] Add new series Micron SPI NAND devices shiva.linuxworks
2020-03-11 17:57 ` [PATCH v7 1/6] mtd: spinand: micron: Generalize the OOB layout structure and function names shiva.linuxworks
2020-03-12 21:33 ` Miquel Raynal
2020-03-11 17:57 ` [PATCH v7 2/6] mtd: spinand: micron: Describe the SPI NAND device MT29F2G01ABAGD shiva.linuxworks
2020-03-12 21:33 ` Miquel Raynal
2020-03-11 17:57 ` [PATCH v7 3/6] mtd: spinand: micron: Add new Micron SPI NAND devices shiva.linuxworks
2020-03-12 21:33 ` Miquel Raynal
2020-03-11 17:57 ` [PATCH v7 4/6] mtd: spinand: micron: identify SPI NAND device with Continuous Read mode shiva.linuxworks
2020-03-12 21:33 ` Miquel Raynal [this message]
2020-03-11 17:57 ` [PATCH v7 5/6] mtd: spinand: micron: Add M70A series Micron SPI NAND devices shiva.linuxworks
2020-03-12 21:33 ` Miquel Raynal
2020-03-11 17:57 ` [PATCH v7 6/6] mtd: spinand: micron: Add new Micron SPI NAND devices with multiple dies shiva.linuxworks
2020-03-12 21:33 ` Miquel Raynal
2020-03-12 19:16 ` [EXT] [PATCH v7 0/6] Add new series Micron SPI NAND devices Shivamurthy Shastri (sshivamurthy)
2020-03-12 19:39 ` Miquel Raynal
2020-05-15 5:27 ` Naresh Kamboju
2020-05-15 5:29 ` Poonam Aggrwal
2020-05-15 7:33 ` Miquel Raynal
2020-05-15 9:59 ` [EXT] " Shivamurthy Shastri (sshivamurthy)
2020-05-15 10:02 ` Suram Suram
2020-05-15 10:13 ` X.f. Ren
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