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From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Boris Brezillon <boris.brezillon@collabora.com>
Cc: Michal Simek <monstr@monstr.eu>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Tudor Ambarus <Tudor.Ambarus@microchip.com>,
	Richard Weinberger <richard@nod.at>,
	linux-mtd@lists.infradead.org,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Naga Sureshkumar Relli <nagasure@xilinx.com>
Subject: Re: [PATCH] mtd: rawnand: micron: Adapt the PAGE READ flow to constraint controllers
Date: Tue, 19 May 2020 14:17:13 +0200	[thread overview]
Message-ID: <20200519141713.32299b5d@xps13> (raw)
In-Reply-To: <20200519103919.50f4417e@collabora.com>

Hi Boris,

Boris Brezillon <boris.brezillon@collabora.com> wrote on Tue, 19 May
2020 10:39:19 +0200:

> On Tue, 19 May 2020 09:46:39 +0200
> Miquel Raynal <miquel.raynal@bootlin.com> wrote:
> 
> > There are controllers not able to just read data cycles on the
> > bus. There are controllers not able to do a change column.
> > 
> > If we want to support both, we need to check which operation is
> > supported first. This is the exact same mechanism that is in use for
> > parameter page reads (ONFI/JEDEC) as the same problem occurs.
> > 
> > Speed testing does not show any throughput penalty so we do not
> > optimize more than that. However it is likely that, in the future, a
> > more robust and exhaustive test will run at boot time to avoid
> > re-checking what is supported and what is not at every call.
> > 
> > Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>  
> 
> This looks good to me, just one thing to address below and you can add
> 
> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>

Yes sure.


Thanks,
Miquèl

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      reply	other threads:[~2020-05-19 12:17 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-19  7:46 [PATCH] mtd: rawnand: micron: Adapt the PAGE READ flow to constraint controllers Miquel Raynal
2020-05-19  8:39 ` Boris Brezillon
2020-05-19 12:17   ` Miquel Raynal [this message]

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