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From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Miquel Raynal <miquel.raynal@bootlin.com>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Tudor Ambarus <Tudor.Ambarus@microchip.com>,
	linux-mtd@lists.infradead.org
Cc: Michal Simek <monstr@monstr.eu>,
	Boris Brezillon <boris.brezillon@collabora.com>,
	Naga Sureshkumar Relli <nagasure@xilinx.com>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Subject: Re: [PATCH v5 10/13] mtd: rawnand: jedec: Adapt the parameter page read to constraint controllers
Date: Sun, 10 May 2020 22:02:55 +0200	[thread overview]
Message-ID: <20200510200255.32434-1-miquel.raynal@bootlin.com> (raw)
In-Reply-To: <20200507105241.14299-11-miquel.raynal@bootlin.com>

On Thu, 2020-05-07 at 10:52:38 UTC, Miquel Raynal wrote:
> We already know that there are controllers not able to read the three
> copies of the parameter page in one go. The workaround was to first
> request the controller to assert command and address cycles on the
> NAND bus to trigger a parameter page read, and then do a read
> operation for each page.
> 
> But there are also controllers which are not able to split the
> parameter page read between the command/address cycles and the actual
> data operation.
> 
> Let's use a regular PARAMETER PAGE READ operation for the first
> iteration and use eithe a CHANGE READ COLUMN or a simple DATA READ
> operation for the following copies, depending on what the controller
> supports. The default for non-exec-op compliant drivers remains
> unchanged: use a SIMPLE READ.
> 
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.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.

Miquel

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Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/

  reply	other threads:[~2020-05-10 20:03 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-07 10:52 [PATCH v5 00/13] Supporting restricted NAND controllers Miquel Raynal
2020-05-07 10:52 ` [PATCH v5 01/13] mtd: rawnand: Translate obscure bitfields into readable macros Miquel Raynal
2020-05-10 20:03   ` Miquel Raynal
2020-05-07 10:52 ` [PATCH v5 02/13] mtd: rawnand: Reorder the nand_chip->options flags Miquel Raynal
2020-05-10 20:03   ` Miquel Raynal
2020-05-07 10:52 ` [PATCH v5 03/13] mtd: rawnand: Rename a NAND chip option Miquel Raynal
2020-05-07 12:11   ` Boris Brezillon
2020-05-10 20:03   ` Miquel Raynal
2020-05-07 10:52 ` [PATCH v5 04/13] mtd: rawnand: Fix comments about the use of bufpoi Miquel Raynal
2020-05-10 20:03   ` Miquel Raynal
2020-05-07 10:52 ` [PATCH v5 05/13] mtd: rawnand: Rename the use_bufpoi variables Miquel Raynal
2020-05-10 20:03   ` Miquel Raynal
2020-05-07 10:52 ` [PATCH v5 06/13] mtd: rawnand: Avoid indirect access to ->data_buf() Miquel Raynal
2020-05-10 20:03   ` Miquel Raynal
2020-05-07 10:52 ` [PATCH v5 07/13] mtd: rawnand: Add a helper to check supported operations Miquel Raynal
2020-05-07 12:12   ` Boris Brezillon
2020-05-10 20:03   ` Miquel Raynal
2020-05-07 10:52 ` [PATCH v5 08/13] mtd: rawnand: Give the possibility to verify a read operation is supported Miquel Raynal
2020-05-10 20:03   ` Miquel Raynal
2020-05-07 10:52 ` [PATCH v5 09/13] mtd: rawnand: onfi: Adapt the parameter page read to constraint controllers Miquel Raynal
2020-05-10 20:03   ` Miquel Raynal
2020-05-07 10:52 ` [PATCH v5 10/13] mtd: rawnand: jedec: " Miquel Raynal
2020-05-10 20:02   ` Miquel Raynal [this message]
2020-05-07 10:52 ` [PATCH v5 11/13] mtd: rawnand: Expose monolithic read/write_page_raw() helpers Miquel Raynal
2020-05-10 20:02   ` Miquel Raynal
2020-05-07 10:52 ` [PATCH v5 12/13] mtd: rawnand: Allow controllers to overload soft ECC hooks Miquel Raynal
2020-05-10 20:02   ` Miquel Raynal
2020-05-07 10:52 ` [PATCH v5 13/13] mtd: rawnand: micron: Allow controllers to overload raw accessors Miquel Raynal
2020-05-10 20:02   ` Miquel Raynal

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