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Date: Fri, 7 Dec 2018 16:17:03 +0100
From: Boris Brezillon <boris.brezillon@bootlin.com>
To: James Tomasetta <James.Tomasetta@cypress.com>
Cc: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com>, Yong Qin
 <Yong.Qin@cypress.com>, Tudor Ambarus <tudor.ambarus@microchip.com>,
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 <jimmy.zhao@nxp.com>, "linux-mtd@lists.infradead.org"
 <linux-mtd@lists.infradead.org>, Pankaj Bansal <pankaj.bansal@nxp.com>
Subject: Re: SPI-NOR FS512S incorrect CR3NV[1] value
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On Fri, 7 Dec 2018 15:02:09 +0000
James Tomasetta <James.Tomasetta@cypress.com> wrote:

> Yogesh,
> 
> Attached is the latest CY driver for linux which might help.  It does
> not use the SFDP.

Yes, and that's exactly what we are trying to address. SFDP was
designed to provide a generic way to expose various information (memory
organization, supported cmdset/features, ...). If manufacturers don't
take care when populating these tables, we're back to the current
situation where everything has to be described on a per-chip basis (far
from ideal).

> We are working to see if we can update the default
> value of the device to 1.

I think it's too late for this part (we'll find a way to fixup the SMPT
table at runtime). But please be careful next time you design a chip.