[PATCH 1/1] beagle: add missing mmc twl and control init

[Sascha Hauer]

On Thu, Mar 07, 2013 at 12:45:18AM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote:
> take from xloader
> 
> with this the mmc work even when booting from nand

Which beagle board revision do you have? With this patch the MMC
doesn't work at all anymore, even when booting from it.

Sascha

> 
> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
> ---
>  arch/arm/boards/beagle/board.c |   29 ++++++++++++++++++++++++++++-
>  1 file changed, 28 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boards/beagle/board.c b/arch/arm/boards/beagle/board.c
> index bed4651..6e69e87 100644
> --- a/arch/arm/boards/beagle/board.c
> +++ b/arch/arm/boards/beagle/board.c
> @@ -63,6 +63,7 @@
>  #include <linux/err.h>
>  #include <usb/ehci.h>
>  #include <mach/xload.h>
> +#include <mfd/twl4030.h>
>  
>  #ifdef CONFIG_DRIVER_SERIAL_NS16550
>  
> @@ -109,6 +110,32 @@ static struct gpmc_nand_platform_data nand_plat = {
>  	.nand_cfg = &omap3_nand_cfg,
>  };
>  
> +/* T2 Register definitions */
> +#define CONTROL_DEV_CONF0	0x48002274
> +#define CONTROL_PBIAS_LITE	0x48002520
> +
> +static void beagle_add_mmc(void)
> +{
> +	unsigned int value = 0;
> +	struct twl4030 *t = twl4030_get();
> +
> +	if (!t) {
> +		pr_warn("twl4030 not ready to setup mmc\n");
> +	} else {
> +		twl4030_reg_write(t, TWL4030_USB_OTHER_FUNC_CTRL_CLR, 0x20);
> +		twl4030_reg_write(t, TWL4030_USB_OTHER_IFC_CTRL_CLR, 0x2);
> +	}
> +
> +	value = readl(CONTROL_PBIAS_LITE);
> +	value |= (1 << 2) | (1 << 1) | (1 << 9);
> +	writel(value, CONTROL_PBIAS_LITE);
> +
> +	value = readl(CONTROL_DEV_CONF0);
> +	writel(value | (1 << 24), CONTROL_PBIAS_LITE);
> +
> +	omap3_add_mmc1(NULL);
> +}
> +
>  static int beagle_mem_init(void)
>  {
>  	omap_add_ram0(SZ_128M);
> @@ -132,7 +159,7 @@ static int beagle_devices_init(void)
>  #endif
>  	omap_add_gpmc_nand_device(&nand_plat);
>  
> -	omap3_add_mmc1(NULL);
> +	beagle_add_mmc();
>  
>  	armlinux_set_bootparams((void *)0x80000100);
>  	armlinux_set_architecture(MACH_TYPE_OMAP3_BEAGLE);
> -- 
> 1.7.10.4
> 
> 
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