Re: [linux-sunxi] Re: [PATCH 1/5] ARM: sunxi: Add driver for SD/MMC hosts found on Allwinner sunxi SoCs

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On 16 December 2013 11:05, Maxime Ripard
<maxime.ripard@xxxxxxxxxxxxxxxxxx> wrote:
> On Sun, Dec 15, 2013 at 11:01:17PM +0100, Michal Suchanek wrote:
>> On 15 December 2013 14:44, Maxime Ripard
>> <maxime.ripard@xxxxxxxxxxxxxxxxxx> wrote:
>> >> --- a/drivers/mmc/host/Kconfig
>> >> +++ b/drivers/mmc/host/Kconfig
>> >> @@ -665,3 +665,11 @@ config MMC_REALTEK_PCI
>> >>       help
>> >>         Say Y here to include driver code to support SD/MMC card interface
>> >>         of Realtek PCI-E card reader
>> >> +
>> >> +config MMC_SUNXI
>> >> +     tristate "Allwinner sunxi SD/MMC Host Controller support"
>> >> +     depends on ARCH_SUNXI
>> >> +     default y
>> >
>> > I'm not that fond of these "default y" patterns. It forces the driver
>> > down to every user of the multiplatform kernels. I'd suggest removing
>> > the default and adding the driver to the defconfigs we have.
>>
>> And why would you build support for sunxi without building support for
>> sunxi mmc?
>
> Because you can?

But does that need to be the default? And is that sane default?

>
> And where am I actually suggesting to do so?

Just a few lines above. You suggest it should not be built by default.

>
>> Like 90%+ sunxi devices actually have a SD slot or an eMMC or a SDIO
>> card connected so what's the point of supporting sunxi without sunxi
>> mmc?
>
> And does your assumption still stand if you take into account all the
> other ARM boards?

Sure. It depends on sunxi platform so if you compile in support for
that 90%+ boards you just added have something connected to a mmc
controller so the sane thing is to also add the mmc controller.

Thanks

Michal
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