linux-kernel - Re: [PATCH 1/7] IBM Akebono: Add a SDHCI platform driver

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Message-ID: <278655068.asy5NBOYab@mexican>
Date:	Mon, 24 Feb 2014 11:38:30 +1100
From:	Alistair Popple <alistair@...ple.id.au>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-mmc@...r.kernel.org, cjb@...top.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH 1/7] IBM Akebono: Add a SDHCI platform driver

On Fri, 21 Feb 2014 15:14:30 Arnd Bergmann wrote:
> On Friday 21 February 2014 17:31:27 Alistair Popple wrote:
> > +config MMC_SDHCI_OF_476GTR
> > +	tristate "SDHCI OF support for the IBM PPC476GTR SoC"
> > +	depends on MMC_SDHCI_PLTFM
> > +	depends on PPC_OF
> > +	help
> > +	  This selects the Secure Digital Host Controller Interface (SDHCI)
> > +	  found on the PPC476GTR SoC.
> > +
> > +	  If you have a controller with this interface, say Y or M here.
> > +
> > +	  If unsure, say N.
> 
> Your driver doesn't actually do anything beyond what is in the common
> sdhci-pltfm.c infrastructure. IMHO you really shoulnd't need a SoC
> specific abstraction for it at all and instead add a generic
> platform driver registration into sdhci-pltfm.c. I'd suggest
> you use "generic-sdhci" (similar to what we do for usb-ohci and usb-ehci
> now) as the compatible string and change your device tree to claim
> compatibility with that and your soc-specific string.

That's a reasonable point. I guess I was just following the example set by the 
other sdhci-* drivers. However on review they're not as generic as this one so 
I will merge this into sdhci-pltfm.c as suggested.

- Alistair

> 	Arnd
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