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Date:	Tue, 9 Sep 2014 12:08:56 +0200
From:	Johan Hovold <johan@...nel.org>
To:	Wang YanQing <udknight@...il.com>
Cc:	Benjamin Henrion <zoobab@...il.com>, gregkh@...uxfoundation.org,
	linus.walleij@...aro.org, jhovold@...il.com, andi@...as.de,
	dforsi@...il.com, gnomes@...rguk.ukuu.org.uk,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v8] usb:serial:pl2303: add GPIOs interface on PL2303

On Fri, Sep 05, 2014 at 09:30:11AM +0800, Wang YanQing wrote:
> On Thu, Sep 04, 2014 at 06:44:31PM +0200, Benjamin Henrion wrote:
> > On Thu, Sep 4, 2014 at 6:14 PM, Benjamin Henrion <zoobab@...il.com> wrote:
> > > I have subscribed to the lkml.
> > >
> > > Can you make me a favour, send me your email as you posted on the LKML
> > > in mbox format attached to an email?
> > >
> > > I am trying to reply to it, but I cannot find an mbox archive, outside
> > > of gmane which rewrites all the email addresses.
> > >
> > > Otherwise, I made a page here:
> > >
> > > http://www.zoobab.com/pl2303hxd-gpio
> > >
> > > I will also try with other adapters to see if the 2 GPIOs show up.
> > >
> > > Any idea how to test the GPIO sysfs speed?
> > 
> > Also tested with an HXA laying around, I could export the 2 GPIOS in
> > /sys/class/gpio, but I could not change the status of the pins via
> > echo.
> > 
> > Any idea why?
> 
> It is strange, I have tested again with my two HXA adapters, they work well.
> How do you test? check cat value or check voltage change? I check cat value,
> and they work good.

So you haven't verified that the voltage actually changes?

Johan
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