[U-Boot] [U-boot]: MMC: add sdhci generic framework

[Jagan Teki]

Hi Rommel,

Thanks for your information.

On Tue, May 21, 2013 at 4:20 AM, Rommel Custodio
<sessyargc+uboot at gmail.com> wrote:
>
> Jagannadha Sutradharudu Teki <jagannadha.sutradharudu-teki <at> xilinx.com>
> writes:
>
>>
>> Hi,
>>
>> On..  drivers/mmc/sdhci.c
>> +       if (caps & SDHCI_CAN_DO_8BIT)
>> +               mmc->host_caps |= MMC_MODE_8BIT;
>>
>> Here we are setting 8BIT bus width, if the sdhci capabilities register 18
> bit is set.
>> Does 18-bit is really denoted for 8-bit bus width, I cound't find it on
> spec,
> https://www.sdcard.org/developers/overview/host_controller/simple_spec/Simpl
> ified_SD_Host_Controller_Spec.pdf
>
> Dear Jagannadha Sutradharudu Teki,
>
> The current u-boot SD/MMC driver supports the latest SD Specification.
> You should read version 3.0 of the specification.

OK, i saw the spec thanks.
I think we need to add the fix on sdhci, for backward compatibility.
Any concerns.

Thanks,
Jagan.