From: Tushar Behera <tushar.behera@linaro.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] mmc: sdhci: Add a quirk to add delay during completion of sdhci_send_cmd
Date: Mon, 08 Apr 2013 09:22:42 +0530 [thread overview]
Message-ID: <51623F0A.20807@linaro.org> (raw)
In-Reply-To: <CAD6G_RT=19P+D1gvE5TGJHJGw3U0agw4Bi4S14vPm6R_6U9NjQ@mail.gmail.com>
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
next prev parent reply other threads:[~2013-04-08 3:52 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-07 4:57 [U-Boot] mmc: sdhci: Add a quirk to add delay during completion of sdhci_send_cmd Jagan Teki
2013-04-08 3:52 ` Tushar Behera [this message]
2013-04-08 4:07 ` Jaehoon Chung
2013-04-08 7:35 ` Lukasz Majewski
2013-04-08 17:58 ` Jagan Teki
2013-04-09 9:41 ` Jagan Teki
2013-04-09 9:53 ` Jaehoon Chung
2013-04-09 10:34 ` Jagan Teki
-- strict thread matches above, loose matches on Subject: below --
2013-04-06 10:15 Jagan Teki
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