linux-kernel - Re: [PATCH 2/6] usb: gadget: mv

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Message-ID: <20140226152001.GG30028@saruman.home>
Date:	Wed, 26 Feb 2014 09:20:01 -0600
From:	Felipe Balbi <balbi@...com>
To:	Peter Chen <Peter.Chen@...escale.com>
CC:	Neil Zhang <zhangwm@...vell.com>, "balbi@...com" <balbi@...com>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Subject: Re: [PATCH 2/6] usb: gadget: mv_udc: disable HW zlt for ep0

On Wed, Feb 26, 2014 at 02:36:19AM +0000, Peter Chen wrote:
>  
> > > > > easy to be found.
> > > > >
> > > >
> > > > Chipidea bug too? Does it follow ch 8.5.3.2 Variable-length Data
> > > > Stage, USB
> > > 2.0 spec?
> > >
> > > wait, this is a chipidea core ? Why aren't you guys using the chipidea
> > > driver yet ? You need to switch over to that driver dude, we can't
> > > have duplicated code in the tree.
> > >
> > > I'm sorry, but I won't be taking this series, please use chipidea
> > > driver, it should be very simple to add a glue layer for your core to
> > the chipidea driver.
> > >
> > 
> > Yes, it use chipidea IP.
> > But the driver is earlier than the chipidea one and we use it for our
> > products.
> > So it may be not that easy to switch to chipidea driver due to the
> > stability.
> > 
> 
> Freescale i.mx SoC used fsl_udc_core.c before which was the one of the
> oldest chipidea drivers, now, all i.mx SoC uses chipidea driver including
> old hardware.

Exactly, Freescale and Intel folks have shown that chipidea driver is
pretty good and ready for production.

-- 
balbi

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