linux-kernel - Re: [PATCH v2] mtd: spi-nor: Add support for BoHong bh25q128as

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Message-ID: <4d117770-6e0c-412f-ac1a-d9ba84b5b4ba@linaro.org>
Date: Mon, 26 Feb 2024 10:53:34 +0200
From: Tudor Ambarus <tudor.ambarus@...aro.org>
To: Michael Walle <mwalle@...nel.org>,
 Christian Marangi <ansuelsmth@...il.com>
Cc: Pratyush Yadav <pratyush@...nel.org>,
 Miquel Raynal <miquel.raynal@...tlin.com>,
 Richard Weinberger <richard@....at>, Vignesh Raghavendra <vigneshr@...com>,
 linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org,
 David Bauer <mail@...id-bauer.net>
Subject: Re: [PATCH v2] mtd: spi-nor: Add support for BoHong bh25q128as



On 26.02.2024 10:51, Michael Walle wrote:
> Hi,
> 
> On Sat Feb 24, 2024 at 12:18 PM CET, Christian Marangi wrote:
>> The user just tested this and It seems there is a problem in JEDEC id?
>>
>> [    0.726451] spi spi0.0: setup: ignoring unsupported mode bits a00
> 
> What SPI controller is used in this case?
> 
>> [    0.732850] spi-nor spi0.0: unrecognized JEDEC id bytes: 68 40 18 68 40 18
>> [    0.739725] spi-nor: probe of spi0.0 failed with error -2
> 
> And what kernel version is this? This should only happen if the SFDP
> header is wrong, but according to your dump, it is correct.
> 

I assume the test was done on an older kernel, where the identification
of the flash based on SFDP is not yet available.