From mboxrd@z Thu Jan 1 00:00:00 1970 From: jamie@jamieiles.com (Jamie Iles) Date: Wed, 4 Jan 2012 17:49:37 +0000 Subject: GPIO matrix and button with single edge IRQ In-Reply-To: References: Message-ID: <20120104174937.GA3104@page> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi Marc, On Wed, Jan 04, 2012 at 07:54:06AM -0500, Marc-Andr? H?bert wrote: > We are developing an i.MX283 custom board. We have a small keypad > matrix and some gpio buttons. After setting up the necessary platform > data, I realized when debugging that it couldn't work because the GPIO > controller does not support dual edge triggers like requested in both Does the GPIO controller support both edge types but not at the same time? LinusW pointed out to me that a couple of other controllers have this restriction but you can work around it in the controller driver: http://www.spinics.net/lists/arm-kernel/msg152526.html Jamie