linux-kernel - Re: [PATCH] ARM: dts: OMAP2+: Fix boot with multi_v7

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Message-ID: <52FA3686.5080800@ti.com>
Date:	Tue, 11 Feb 2014 08:41:10 -0600
From:	Nishanth Menon <nm@...com>
To:	Hans de Goede <hdegoede@...hat.com>, Roger Quadros <rogerq@...com>,
	<tony@...mide.com>
CC:	<bcousson@...libre.com>, <balbi@...com>,
	<linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>
Subject: Re: [PATCH] ARM: dts: OMAP2+: Fix boot with multi_v7_defconfig

On 02/11/2014 08:35 AM, Hans de Goede wrote:
> On 02/11/2014 03:17 PM, Nishanth Menon wrote:
>> On 02/11/2014 07:53 AM, Roger Quadros wrote:
>>> On 02/10/2014 08:10 PM, Roger Quadros wrote:
>>>> The OMAP EHCI controller is not compatible with the EHCI
>>>> platform HCD driver so don't claim that we are.
>>>>
>>>> This fixes boot on OMAP platforms with CONFIG_USB_EHCI_HCD_PLATFORM=y
>>>> e.g. multi_v7_defconfig
>>>>
>>>> Reported-by: Nishanth Menon <nm@...com>
>>>> Signed-off-by: Roger Quadros <rogerq@...com>
>>>
>>> Please ignore this patch as Hans has agreed to do a more proper fix in
>>>
>>> http://article.gmane.org/gmane.comp.hardware.netbook.arm.sunxi/7015
>> umm.. even then, drivers/usb/host/ehci-ppc-of.c claims compatibility
>> with usb,ehci -> and we wont function with that driver either.
> 
> Right, but that has never been an issue as no kernel will ever include
> both ppc and omap support.

Conceptually, we have compatibility string today in dts description
that maps a driver that cant ever handle the device. I dont have
strong opinions either way.. just something i noticed with a git grep..

-- 
Regards,
Nishanth Menon
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