Re: [Gumstix-users] MMC3

[Dennis S. <den...@we...>]

Hi,

is the ocr-mask essential? Beacause that's the only thing that was 
missing in my board-overo.c. However i was using a different kernel, 
linux-omap-psp-2.6.32.

Greetings
Dennis



Am 04.02.2011 22:39, schrieb Steve Sakoman:
> On Fri, Feb 4, 2011 at 12:47 PM, Chris Whittenburg
> <whi...@gm...>  wrote:
>> Great news.  What software changes were required to enable sdcard on mmc3?
>
> I'm not sure what Dennis' original SW looked like, but the kernel I
> sent him had a quite simple patch:
>
> diff --git a/arch/arm/mach-omap2/board-overo.c
> b/arch/arm/mach-omap2/board-overo.c
> index 89036cb..d61a494 100644
> --- a/arch/arm/mach-omap2/board-overo.c
> +++ b/arch/arm/mach-omap2/board-overo.c
> @@ -479,6 +479,14 @@ static struct omap2_hsmmc_info mmc[] = {
>   		.transceiver	= true,
>   		.ocr_mask	= 0x00100000,	/* 3.3V */
>   	},
> +	{
> +		.mmc		= 3,
> +		.wires		= 4,
> +		.gpio_cd	= -EINVAL,
> +		.gpio_wp	= -EINVAL,
> +		.ocr_mask       = 0x00100000,   /* 3.3V */
> +
> +	},
>   	{}	/* Terminator */
>   };
>
> If your hw implements write protect, change detect, or a sw
> programmable power supply then you would need to expand on this of
> course.
>
> Steve
>
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