[U-Boot] [PATCH RFC] OMAP: mmc: add support for second and third mmc channels

[Scott Wood <scottwood@freescale.com>]

Steve Sakoman wrote:
> This patch adds support for the second and third mmc channels on OMAP3
> processors
> 
> Boards wishing to use this feature should define
> CONFIG_SYS_MMC_SET_DEV in the board config
> 
> Tested on Overo
> 
> Signed-off-by: Steve Sakoman <steve@sakoman.com>
> ---
> 
> diff --git a/arch/arm/include/asm/arch-omap3/mmc_host_def.h
> b/arch/arm/include/asm/arch-omap3/mmc_host_def.h
> index aa751c9..f081b43 100644
> --- a/arch/arm/include/asm/arch-omap3/mmc_host_def.h
> +++ b/arch/arm/include/asm/arch-omap3/mmc_host_def.h
> @@ -31,11 +31,18 @@
>  typedef struct t2 {
>  	unsigned char res1[0x274];
>  	unsigned int devconf0;		/* 0x274 */
> -	unsigned char res2[0x2A8];
> +	unsigned char res2[0x064];
> +	unsigned int devconf1;		/* 0x2D8 */
> +	unsigned char res3[0x248];
>  	unsigned int pbias_lite;	/* 0x520 */

This changes the offset of pbias_lite -- 0x64+4+0x248 = 0x2b0, not 0x2a8.

The mandatory use of structs even with large reserved areas seems to 
invite and obscure such issues (and the comments don't help much, since 
nothing ensures they're accurate).

-Scott