From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [PATCH 2/2] Documentation: gpio: Update description for X-Gene standby GPIO controller DTS binding Date: Fri, 11 Sep 2015 11:35:29 +0200 Message-ID: <11539535.sS04eUgSdg@wuerfel> References: <1441963332-13329-1-git-send-email-yvo@apm.com> <1441963332-13329-3-git-send-email-yvo@apm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Return-path: In-Reply-To: <1441963332-13329-3-git-send-email-yvo@apm.com> Sender: linux-gpio-owner@vger.kernel.org To: Y Vo Cc: linus.walleij@linaro.org, linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Phong Vo , Toan Le , Loc Ho , Feng Kan , Quan Nguyen , Duc Dang , patches@apm.com List-Id: devicetree@vger.kernel.org On Friday 11 September 2015 16:22:12 Y Vo wrote: > There are 20 GPIO pins from 0..21. There is no GPIO_DS14 or GPIO_DS15, > -only GPIO_DS8..GPIO_DS13 support interrupts. The IRQ mapping > +only GPIO_DS8..GPIO_DS13 support external interrupts. The IRQ mapping > is currently 1-to-1 on interrupts 0x28 thru 0x2d. > +GPIO pins from GPIO_DS8 to GPIO_DS13 are configured as external interrupt > +by default. If one wish not to use any of these pins as external interrupts, > +the corresponding interrupt resource for those pins should be removed. According to this description, I fail to see how one would specify a missing interrupt for one of the pins that is not the last one in the list. Arnd