linux-kernel - Re: [PATCH] usb: ohci-exynos: Add facility to use phy provided by the generic phy framework

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Message-ID: <CAFp+6iGrgMTE27FxpFTQfALJO_XypxGSZ1-wny8KAoY1sLBbWw@mail.gmail.com>
Date:	Tue, 22 Apr 2014 01:00:57 +0530
From:	Vivek Gautam <gautam.vivek@...sung.com>
To:	Linux USB Mailing List <linux-usb@...r.kernel.org>,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>, linux-doc@...r.kernel.org,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Cc:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Greg KH <gregkh@...uxfoundation.org>,
	Kukjin Kim <kgene.kim@...sung.com>, robh+dt@...nel.org,
	Jingoo Han <jg1.han@...sung.com>,
	Alan Stern <stern@...land.harvard.edu>
Subject: Re: [PATCH] usb: ohci-exynos: Add facility to use phy provided by the
 generic phy framework

On Thu, Apr 10, 2014 at 6:54 PM, Vivek Gautam <gautam.vivek@...sung.com> wrote:
> Add support to consume phy provided by Generic phy framework.
> Keeping the support for older usb-phy intact right now, in order
> to prevent any functionality break in absence of relevant
> device tree side change for ohci-exynos.
> Once we move to new phy in the device nodes for ohci, we can
> remove the support for older phys.

Any comments on this please.
I think whatever the approach we follow, that can be common to both
ehci-exynos[1], and ohci-exynos, since
both are needed to move to the new generic phy framework, keeping
support for older usb-phy
so as to have smooth transition, in order to avoid any regression.

> Signed-off-by: Vivek Gautam <gautam.vivek@...sung.com>
> Cc: Jingoo Han <jg1.han@...sung.com>
> Cc: Alan Stern <stern@...land.harvard.edu>
> ---
>
> Based on 'usb-next' branch of Greg's usb tree.
> Tested with local dt patches, similar to ehci dt changes posted by Kamil[1].
> Tested on Exynos5250 smdk.
>
 [1] [PATCH v6 4/8] dts: Add usb2phy to Exynos 5250
     https://lkml.org/lkml/2014/1/29/302
>
>  .../devicetree/bindings/usb/exynos-usb.txt         |   14 ++++
>  drivers/usb/host/ohci-exynos.c                     |   79 ++++++++++++++++++--
>  2 files changed, 85 insertions(+), 8 deletions(-)
>
[snip]
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