linux-kernel - Re: [PATCH v2 0/3] ARM: OMAP2+: USB Host bug fixes for 3.13 rc

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Message-ID: <529EFD42.9070507@ti.com>
Date:	Wed, 4 Dec 2013 12:00:34 +0200
From:	Tomi Valkeinen <tomi.valkeinen@...com>
To:	Roger Quadros <rogerq@...com>, <bcousson@...libre.com>,
	<paul@...an.com>, <tony@...mide.com>
CC:	<balbi@...com>, <sr@...x.de>, <David.Laight@...LAB.COM>,
	<michael@...rulasolutions.com>, <bigeasy@...utronix.de>,
	<linux-omap@...r.kernel.org>, <linux-usb@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 0/3] ARM: OMAP2+: USB Host bug fixes for 3.13 rc

On 2013-12-03 16:25, Roger Quadros wrote:
> Hi,
> 
> This is a follow up solution to the original series in [1]
> 
> The first patch fixes the OMAP4 Panda USB detection problems on 3.13-rc1
> with u-boot v2013.10.
> 
> The remaining 2 patches are required if SOFTRESET needs to be done for the
> USB Host module on OMAP3 platforms.
> 
> Patch 2 fixes the hwmod RESET logic to prevent multiple SOFTRESETs
> being issued to the modules. This multiple SOFTRESET was causing problems
> with OMAP3 USB Host module. On Beagleboard C4 this is seen as failure to
> mount NFS root over external USB to Ethernet device.
> 
> This might be the reason why HWMOD_INIT_NO_RESET was used for the OMAP
> USB host module in OMAP3 hwmod data and just carried forward in OMAP4
> and OMAP5 hwmod data as well.
> 
> cheers,
> -roger

Tested on Panda and Beagle xM. Works fine for me.

 Tomi



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