[U-Boot] mmc: sdhci: Add a quirk to add delay during completion of sdhci_send_cmd

[Jagan Teki]

On Mon, Apr 8, 2013 at 9:22 AM, Tushar Behera <tushar.behera at linaro.org> wrote:
> On 04/07/2013 10:27 AM, Jagan Teki wrote:
>> Hi,
>>
>> I saw that you have been added the SDHCI_QUIRK_WAIT_SEND_CMD on below commit
>> http://git.denx.de/?p=u-boot.git;a=commitdiff;h=13243f2eafc4292917178051fe1bb5aab2774dca
>>
>> I need few quires regarding the QUIRK delay.
>> 1. Why the delay is 1000
>> +       if (host->quirks & SDHCI_QUIRK_WAIT_SEND_CMD)
>> +               udelay(1000);
>> +
>> 2. is this delay specific to s5p_sdhci  controller?
>
> This was specific to s5p_sdhci driver so as to replicate the behavior of
> s5p_mmc driver.

May be you can give the QUIRK which includes s5p as it specific to
this driver, i may be incorrect.

Thanks,
Jagan.

>
>> 3. I have an issue "Controller never released inhibit bit(s)"
>>    but when I enable this quirk on my driver with udelay(10000), it's
>> working.
>
> I am not sure about the exact delay as per the spec. I have added
> Jaehoon to CC who might have additional information about this.
>
>>
>> Could you please help me.
>>
>> Thanks,
>> Jagan.
>>
>
>
> --
> Tushar Behera