From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nikita Kiryanov <nikita@compulab.co.il>
Date: Wed, 19 Dec 2012 08:58:44 +0200
Subject: [U-Boot] [PATCH 4/7] omap_hsmmc: implement driver check for
 card detection
In-Reply-To: <20121218235226.GC14589@bill-the-cat>
References: <1354537187-26744-1-git-send-email-nikita@compulab.co.il>
	<1354537187-26744-5-git-send-email-nikita@compulab.co.il>
	<20121218235226.GC14589@bill-the-cat>
Message-ID: <50D165A4.1050409@compulab.co.il>
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To: u-boot@lists.denx.de

On 12/19/2012 01:52 AM, Tom Rini wrote:
> On Mon, Dec 03, 2012 at 02:19:44PM +0200, Nikita Kiryanov wrote:
>
>> Implement driver check for card detection.
>>
>> Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
>> Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
>
>> -	ret = omap_mmc_init(0, 0, 0);
>> +	ret = omap_mmc_init(0, 0, 0, -1);
>
> Everyone passes -1 here, including the follow-up patch for cm_t35.  Why
> do we need the change?
>

This change is useful because on OMAP it's a fair assumption
that card detect (and write protect) signal will be ascertained via
a GPIO, though it is not a certainty.

Everybody who is not cm_t35 get a -1 because I did not try to
figure out if they really do use GPIOs for card detect.
cm_t35 gets a -1 because it does not use OMAP GPIOs for card detect,
but relies on those of the PMIC instead.

-- 
Regards,
Nikita.