linux-kernel - Re: [RESEND PATCH v3 7/8] mtd: spi-nor: Convert cadence-quadspi to use spi-mem framework

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Message-ID: <26caa2e5-6c6e-09a3-902e-843cfee40158@siemens.com>
Date:   Mon, 24 Aug 2020 14:06:41 +0200
From:   Jan Kiszka <jan.kiszka@...mens.com>
To:     Vignesh Raghavendra <vigneshr@...com>,
        Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Mark Brown <broonie@...nel.org>
Cc:     Boris Brezillon <bbrezillon@...nel.org>,
        Ramuthevar Vadivel Murugan 
        <vadivel.muruganx.ramuthevar@...ux.intel.com>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-spi@...r.kernel.org, simon.k.r.goldschmidt@...il.com,
        dinguyen@...nel.org, marex@...x.de
Subject: Re: [RESEND PATCH v3 7/8] mtd: spi-nor: Convert cadence-quadspi to
 use spi-mem framework

On 24.08.20 13:44, Vignesh Raghavendra wrote:
> Hi Jan,
> 
> On 8/24/20 11:25 AM, Jan Kiszka wrote:
> [...]
> 
>>> +MODULE_AUTHOR("Vignesh Raghavendra <vigneshr@...com>");
>>>
>> On the AM65x, this changes mtd->name (thus mtd-id for
>> parser/cmdlinepart) from 47040000.spi.0 to spi7.0. The besides having to
>> deal with both names now, "spi7" sounds like it could easily change
>> again if someone plugs or unplugs some other SPI device. Is this intended?
>>
> 
> You could use DT aliases to make sure OSPI0 is always at given bus num
> (say spi7):
> 
>         aliases {
>                 spi7 = &ospi0;
>         };

Ah, looks like this is a common pattern... Thanks, will try that.

Jan

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