[U-Boot] mmc: sdhci: Add a quirk to add delay during completion of sdhci_send_cmd
Tushar Behera
tushar.behera at linaro.org
Mon Apr 8 05:52:42 CEST 2013
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.
> 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
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