linux-kernel - Re: [PATCH v2 3/4] dt-bindings: mtd: macronix,mx25l12833f: add SPI-NOR chip

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Message-ID: <875xtd48ps.fsf@geanix.com>
Date: Wed, 10 Jul 2024 16:34:07 +0200
From: Esben Haabendal <esben@...nix.com>
To: Erez <erezgeva2@...il.com>
Cc: Tudor Ambarus <tudor.ambarus@...aro.org>,  Jaime Liao
 <jaimeliao@...c.com.tw>,  leoyu@...c.com.tw,  Alvin Zhou
 <alvinzhou@...c.com.tw>,  Julien Su <juliensu@...c.com.tw>,  Erez Geva
 <erezgeva@...ime.org>,  linux-mtd@...ts.infradead.org,  Pratyush Yadav
 <pratyush@...nel.org>,  Michael Walle <mwalle@...nel.org>,
  linux-kernel@...r.kernel.org,  Miquel Raynal <miquel.raynal@...tlin.com>,
  Richard Weinberger <richard@....at>,  Vignesh Raghavendra
 <vigneshr@...com>,  devicetree@...r.kernel.org,  Rob Herring
 <robh@...nel.org>,  Krzysztof Kozlowski <krzk+dt@...nel.org>,  Conor
 Dooley <conor+dt@...nel.org>
Subject: Re: [PATCH v2 3/4] dt-bindings: mtd: macronix,mx25l12833f: add
 SPI-NOR chip

Erez <erezgeva2@...il.com> writes:

> On Wed, 3 Jul 2024 at 09:12, Tudor Ambarus <tudor.ambarus@...aro.org> wrote:
>> On 7/3/24 12:16 AM, Erez wrote:
>>> On Tue, 2 Jul 2024 at 07:00, Tudor Ambarus <tudor.ambarus@...aro.org> wrote:
>>>
>>> The table below uses fixed width characters.
>>>
>>> ID      Part.         Size              Status          SFDP status
>>> according to spec.
>>>                                                         New chip with
>>> SFDP for EOL
>>> c22012  MX25L2005(A)  SZ_256K =  2Mb    EOL             MX25L2006E
>>> c22532  MX25U2033E    SZ_256K =  2Mb    EOL
>>> c22013  MX25L4005A    SZ_512K =  4Mb    EOL
>>> c22533  MX25U4035     SZ_512K =  4Mb    EOL
>>> c22534  MX25U8035     SZ_1M   =  8Mb    EOL
>>> c22016  MX25L3205D    SZ_4M   =  32Mb   EOL             MX25L3233F
>>> c29e16  MX25L3255E    SZ_4M   =  32Mb   EOL
>>> c22017  MX25L6405D    SZ_8M   =  64Mb   EOL
>>> c22018  MX25L12805D   SZ_16M  =  128Mb  EOL             MX25L12833F
>>> c22538  MX25U12835F   SZ_16M  =  128Mb  EOL
>>> c2253a  MX66U51235F   SZ_64M  =  512Mb  EOL             MX25U51245G
>>> c22010  MX25L512E     SZ_64K  =  512Kb  NO_REC          Have-SFDP!
>>> c22015  MX25L1606E    SZ_2M   =  16Mb   NO_REC          Have-SFDP!
>>> c22536  MX25U3235F    SZ_4M   =  32Mb   NO_REC          Have-SFDP!
>>> c22816  MX25R3235F    SZ_4M   =  32Mb   NO_REC          Have-SFDP!
>>> c22537  MX25U6435F    SZ_8M   =  64Mb   NO_REC          Have-SFDP!
>>> c22019  MX25L25635E   SZ_32M  =  256Mb  NO_REC          Have-SFDP!
>>> c22539  MX25U25635F   SZ_32M  =  256Mb  NO_REC          Have-SFDP!
>>> c2201a  MX66L51235F   SZ_64M  =  512Mb  NO_REC          Have-SFDP!
>>> c2261b  MX66L1G55G    SZ_128M =  1Gb    NO_REC          Spec. is not public
>>> c22314  MX25V8035F    SZ_1M   =  8Mb    PROD            Have-SFDP!
>>> c22815  MX25R1635F    SZ_2M   =  16Mb   PROD            Have-SFDP!
>>> c2201b  MX66L1G45G    SZ_128M =  1Gb    PROD            Have-SFDP!
>>> c2253c  MX66U2G45G    SZ_256M =  2Gb    PROD            Have-SFDP!
>>> c2253a  MX25U51245G   SZ_64M  =  512Mb  PROD            Have-SFDP!
>>>
>>> EOL     End of Life
>>> PROD    Normal Production
>>> NO_REC  Not recommend for new design
>>>
>>>
>>
>> not sure what you want me to do with these.
>
> That we can read SFDP for all chips from Macronix.
> Only old chips before 2010 do not have SFDP.

So, should we try and identify new chips (with SFDP) that re-use the ID of all the
above mentioned EOL chips that does not have SFDP?

As I read the communication from Macronix, then we should expect new
chips re-using the ID for all of them. It is just a matter of digging.

/Esben