On Friday 28 November 2014 15:53:04 Pawel Moll wrote:
> vmmc-supply is a defined as:
>
> vmmc-supply = <&v2m_fixed_3v3>;
>
> which is:
>
> v2m_fixed_3v3: fixedregulator@0 {
> compatible = "regulator-fixed";
>
> and arch/arm/mach-vexpress/Kconfig says:
>
> menuconfig ARCH_VEXPRESS
> [...]
> select REGULATOR_FIXED_VOLTAGE if REGULATOR
>
> but it doesn't select REGULATOR in result of this discussion:
>
> http://thread.gmane.org/gmane.linux.ports.arm.kernel/223426/focus=223427
>
> To summarize, I believe that setting CONFIG_REGULATOR=y (as in
> vexpress_defconfig) should solve your issue.
Well, there is clearly a bug somewhere. As you say, the mmc driver
now uses the regulator API to check the voltage instead of using
platform_data. But there is no dependency on having the regulator
support around, so it can't.
I would suggest applying your patch from
http://thread.gmane.org/gmane.linux.ports.arm.kernel/223426/focus=224128
after all, or just hardcoding regulator support like a lot of other
platforms do.
Arnd
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