linux-kernel - Re: [PATCH 3/5] usb: phy: samsung: remove old USB 2.0 PHY driver

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Message-ID: <CAFp+6iGtMUEncFwJ=B_p=q8Bs_O9EMyjsL+ZP9PveO=VMrLmpA@mail.gmail.com>
Date:	Thu, 21 Aug 2014 10:00:38 +0530
From:	Vivek Gautam <gautam.vivek@...sung.com>
To:	Tomasz Figa <tomasz.figa@...il.com>
Cc:	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Felipe Balbi <balbi@...com>,
	Kishon Vijay Abraham I <kishon@...com>,
	Kamil Debski <k.debski@...sung.com>,
	Mark Brown <broonie@...aro.org>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>,
	Linux USB Mailing List <linux-usb@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/5] usb: phy: samsung: remove old USB 2.0 PHY driver

Hi Tomasz and Bartlomiej,


On Mon, Aug 18, 2014 at 4:52 PM, Tomasz Figa <tomasz.figa@...il.com> wrote:
> On 18.08.2014 13:02, Bartlomiej Zolnierkiewicz wrote:
>> On Thursday, August 14, 2014 08:07:40 PM Vivek Gautam wrote:
>>> On Thursday, August 14, 2014 7:55 PM, Bartlomiej Zolnierkiewicz
>>> <b.zolnierkie@...sung.com> wrote
>>
>>> There's one thing that I would want to comment here, since we don't have any
>>> new usb-phy driver for S3C64XX,
>>> so we can't simply remove this entire driver.
>>> I have posted my patch-series [1], which does cleanup while keeping the
>>> support for S3C64XX.
>>
>> AFAIK S3C64XX code from drivers/usb/phy/phy-samsung-usb2.c has
>> never been used as this platform still uses its own code from
>> arch/arm/mach-s3c64xx/setup-usb-phy.c (there are no users in
>> the kernel tree of either s3c64xx-usb2phy platform device or
>> "samsung,s3c64xx-usb2phy" DT compatible) .  Therefore I think
>> that the entire drivers/usb/phy/phy-samsung-usb2.c driver
>> should be removed (somebody with the hardware can as well add
>> S3C64XX support to the new drivers/phy/phy-samsung-usb2.c
>> driver and port the platform to use it).
>>
>
> I agree with removal of this driver. As Bart said, it is not used for
> S3C64xx at all. The platform was supposed to be moved to this driver,
> but that never happened. In fact, I already have a patch adding support
> for S3C64xx to the new driver.

Cool then, lets remove this driver completely and use the new generic
PHY based driver
once that comes (from Tomasz).

I shall drop the patches for cleaning up the usb-phy drivers from my series.


-- 
Best Regards
Vivek Gautam
Samsung R&D Institute, Bangalore
India
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