linux-kernel - Re: [PATCH V1 1/1] linux: drivers: mtd: spi-nor: gigadevice.c

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Message-ID: <55d60aec-3b20-d9d3-aeb2-77abbcc47d16@linaro.org>
Date:   Fri, 21 Jul 2023 09:06:00 +0300
From:   Tudor Ambarus <tudor.ambarus@...aro.org>
To:     Vlim <vlim@...adevice.com>, Michael Walle <michael@...le.cc>
Cc:     "pratyush@...nel.org" <pratyush@...nel.org>,
        "miquel.raynal@...tlin.com" <miquel.raynal@...tlin.com>,
        "richard@....at" <richard@....at>,
        "vigneshr@...com" <vigneshr@...com>,
        "akumarma@....com" <akumarma@....com>,
        "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "vikhyat.goyal@....com" <vikhyat.goyal@....com>
Subject: Re: [PATCH V1 1/1] linux: drivers: mtd: spi-nor: gigadevice.c



On 21.07.2023 00:48, Vlim wrote:
> Hi, Michael,
> 
> Our parts do support SFDP.
> Can you provide the guideline for the part definition?

There's none at the moment, you have to read the code.

> I do see these samples in the gigadevice.c file; but, not sure of the
> purpose of each parameter.

The flags are defined in drivers/mtd/spi-nor/core.h. Start from there.
> 

All the flashes that you proposed, but one probably (gd25lx256e) can be
probed using the generic spi-nor driver, thus you won't need to add
dedicated flash entries. See:
773bbe104497 mtd: spi-nor: add generic flash driver

Cheers,
ta