linux-kernel - Re: [PATCH v2 1/2] memory: fsl_ifc: Make FSL

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Date: Tue, 28 May 2024 15:32:12 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Christophe Leroy <christophe.leroy@...roup.eu>,
 Esben Haabendal <esben@...nix.com>, Tudor Ambarus
 <tudor.ambarus@...aro.org>, Pratyush Yadav <pratyush@...nel.org>,
 Michael Walle <mwalle@...nel.org>, Miquel Raynal
 <miquel.raynal@...tlin.com>, Richard Weinberger <richard@....at>,
 Vignesh Raghavendra <vigneshr@...com>, Michael Ellerman
 <mpe@...erman.id.au>, Nicholas Piggin <npiggin@...il.com>,
 "Aneesh Kumar K.V" <aneesh.kumar@...nel.org>,
 "Naveen N. Rao" <naveen.n.rao@...ux.ibm.com>
Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
 "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH v2 1/2] memory: fsl_ifc: Make FSL_IFC config visible and
 selectable

On 28/05/2024 15:15, Christophe Leroy wrote:
> 
> 
> Le 28/05/2024 à 14:28, Esben Haabendal a écrit :
>> [Vous ne recevez pas souvent de courriers de esben@...nix.com. Découvrez pourquoi ceci est important à https://aka.ms/LearnAboutSenderIdentification ]
>>
>> While use of fsl_ifc driver with NAND flash is fine, as the fsl_ifc_nand
>> driver selects FSL_IFC automatically, we need the CONFIG_FSL_IFC option to
>> be selectable for platforms using fsl_ifc with NOR flash.
> 
> I don't understand.
> 
> Shall I understand :
> 
> While use of fsl_ifc driver with NAND flash is fine as the fsl_ifc_nand 
> driver selects FSL_IFC automatically, ....
> 
> or
> 
> ..., as the fsl_ifc_nand driver selects FSL_IFC automatically we need 
> the CONFIG_FSL_IFC option to be selectable for platforms using fsl_ifc 
> with NOR flash
> 
> 
> 
> I'm fine with the fact that you want to be able to select it when you 
> use NOR flashes, 

But users are not fine... their memory won't work if they cannot choose
it (if you meant select=choose).

> allthough I can't see why, but why do you need to 
> change the "select" to a "depend" ? You should be able to leave it as a 

As explained in v1: user-visible symbols should not be selected. Nothing
odd here.

> "select" in which case patch 2 wouldn't be necessary.

Best regards,
Krzysztof