Date: Sun, 29 Aug 2010 12:10:34 +0200
From: Willy Tarreau <w@1wt.eu>
To: David Brownell <david-b@pacbell.net>
Cc: linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
        Samuel Ortiz <sameo@linux.intel.com>,
        Miguel Gaio <miguel.gaio@efixo.com>, Juhos Gabor <juhosg@openwrt.org>,
        David Brownell <dbrownell@users.sourceforge.net>,
        Florian Fainelli <florian@openwrt.org>
Subject: Re: [PATCH] GPIO: add support for NXP 74HC164 GPIO expander
Message-ID: <20100829101034.GB16004@1wt.eu>
References: <461057.78283.qm@web180310.mail.gq1.yahoo.com>
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On Sat, Aug 28, 2010 at 04:18:51PM -0700, David Brownell wrote:
> 
> --- On Sat, 8/28/10, Florian Fainelli <florian@openwrt.org> wrote:
> 
> > This patch adds support for
> > NXP's 74HC164 GPIO expander.
> 
> The 74164 parts are standard 74xxx series
> discrete logic parts sold by many vendors
> as 8 bit shift registers ... and in many
> logic series (HC, HCT, more).
> 
> At least describe this as generic to all
> those 8-bit shift registers, not just NXP.

Indeed, that was my concern too.

(...)
> p.s. I'd have to pull out my data sheet collection
> to verify, but it might be the 74163 which can
> be used as an 8 bit parallel to serial (input)
>  shift register...

no, it's the 74165. But it would be worth supporting
both !

Willy

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