linux-kernel - PCF857x and 16-bit GPIO expanders

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Message-ID: <20130917190732.GD15645@radagast>
Date:	Tue, 17 Sep 2013 14:07:32 -0500
From:	Felipe Balbi <balbi@...com>
To:	<linus.walleij@...aro.org>, <linux-gpio@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux OMAP Mailing List <linux-omap@...r.kernel.org>
Subject: PCF857x and 16-bit GPIO expanders

Hi,

has anyone ever successfully using gpio-pcf857x.c driver with 16-bit
gpio expanders ? We're having some issues here where toggling the last
gpio pin (gpio 15) on a PCF8575 device causes platform to hang and I
can't come up with any explanation of why would it hang...

Any hints ?

cheers

-- 
balbi

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