From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dmitry Lifshitz <lifshitz@compulab.co.il>
Date: Tue, 16 Dec 2014 08:50:17 +0200
Subject: [U-Boot] [PATCH 4/5] arm: omap: reset sata on boot
In-Reply-To: <20141215170040.GB20704@bill-the-cat>
References: <1418652179-15311-1-git-send-email-lifshitz@compulab.co.il>
	<1418652179-15311-5-git-send-email-lifshitz@compulab.co.il>
	<20141215170040.GB20704@bill-the-cat>
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To: u-boot@lists.denx.de

Hi Tom,

On 12/15/2014 07:00 PM, Tom Rini wrote:
> On Mon, Dec 15, 2014 at 04:02:58PM +0200, Dmitry Lifshitz wrote:
>
>> On OMAP platforms (like OMAP5) Linux kernel fails to detect a SATA
>> device if it is used by U-Boot.
>>
>> It happens because U-Boot does not reset SATA controller before boot.
>>
>> Reset the controller on OS boot so that Linux will have a clean state
>> to work with.
>>
>> Signed-off-by: Dmitry Lifshitz <lifshitz@compulab.co.il>
>
> To be clear, since we're using CMD_SCSI and not CMD_SATA is why we need
> this reset sequence here instead of the sata_stop() that say i.MX uses.

You are right, sata_stop() can be used here.

Unfortunately, OMAP SATA access is implemented via SCSI, so I managed to 
implement this workaround.

Regards,

Dmitry