[U-Boot] [PATCH 2/2] powerpc/esdhc: hack t4240 host capabilities register for VS33 bit

[Scott Wood <scottwood@freescale.com>]

On Fri, 2013-10-25 at 09:54 +0800, Haijun Zhang wrote:
> T4240 eSDHC host capabilities reigster should have VS33 bit define.
> hack the code to add the 3.3 voltage support
> 
> Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
> Signed-off-by: Haijun Zhang <Haijun.Zhang@freescale.com>
> ---
>  arch/powerpc/include/asm/config_mpc85xx.h | 1 +
>  drivers/mmc/fsl_esdhc.c                   | 6 ++++++
>  2 files changed, 7 insertions(+)
> 
> diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h
> index 946ea97..84e79c8 100644
> --- a/arch/powerpc/include/asm/config_mpc85xx.h
> +++ b/arch/powerpc/include/asm/config_mpc85xx.h
> @@ -596,6 +596,7 @@
>  #define CONFIG_SYS_FSL_SRIO_LIODN
>  #define CONFIG_SYS_FSL_USB_DUAL_PHY_ENABLE
>  #define CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY
> +#define CONFIG_SYS_FSL_MMC_HAS_CAPBLT_VS33
>  #define CONFIG_SYS_FSL_ERRATUM_A004468
>  #define CONFIG_SYS_FSL_ERRATUM_A_004934
>  #define CONFIG_SYS_FSL_ERRATUM_A005871
> diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
> index d4c1eef..b8b2907 100644
> --- a/drivers/mmc/fsl_esdhc.c
> +++ b/drivers/mmc/fsl_esdhc.c
> @@ -545,6 +545,12 @@ int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg)
>  	caps = caps & ~(ESDHC_HOSTCAPBLT_SRS |
>  			ESDHC_HOSTCAPBLT_VS18 | ESDHC_HOSTCAPBLT_VS30);
>  #endif
> +
> +/* T4240 host controller capabilities register should have VS33 bit */
> +#ifdef CONFIG_SYS_FSL_MMC_HAS_CAPBLT_VS33
> +	caps = caps | ESDHC_HOSTCAPBLT_VS33;
> +#endif

Is there an erratum associated with this?  Is this that
t4240qds-specific bug, or a different bug that affects all t4240?

-Scott