From patchwork Wed Sep 5 08:40:56 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Ripard X-Patchwork-Id: 1406801 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork2.kernel.org (Postfix) with ESMTP id A1113DF264 for ; Wed, 5 Sep 2012 08:45:17 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1T9BB7-0000OQ-1Y; Wed, 05 Sep 2012 08:41:41 +0000 Received: from mail.free-electrons.com ([88.190.12.23]) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1T9BAm-0000HV-35 for linux-arm-kernel@lists.infradead.org; Wed, 05 Sep 2012 08:41:20 +0000 Received: by mail.free-electrons.com (Postfix, from userid 106) id 71BCD188; Wed, 5 Sep 2012 10:41:20 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.free-electrons.com X-Spam-Level: X-Spam-Status: No, score=-3.2 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 shortcircuit=no autolearn=ham version=3.3.1 Received: from localhost (col31-4-88-188-83-94.fbx.proxad.net [88.188.83.94]) by mail.free-electrons.com (Postfix) with ESMTPSA id 86AF4296; Wed, 5 Sep 2012 10:41:08 +0200 (CEST) From: Maxime Ripard To: linux-arm-kernel@lists.infradead.org, shawn.guo@linaro.org, grant.likely@secretlab.ca, linus.walleij@linaro.org Subject: [PATCH 7/8] gpio: 74x164: dts: Add documentation for the dt binding Date: Wed, 5 Sep 2012 10:40:56 +0200 Message-Id: <1346834457-6257-7-git-send-email-maxime.ripard@free-electrons.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1346834457-6257-1-git-send-email-maxime.ripard@free-electrons.com> References: <1346834457-6257-1-git-send-email-maxime.ripard@free-electrons.com> X-Spam-Note: CRM114 invocation failed X-Spam-Score: -2.1 (--) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-2.1 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -0.2 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: brian@crystalfontz.com X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Signed-off-by: Maxime Ripard --- .../devicetree/bindings/gpio/gpio-74x164.txt | 26 ++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-74x164.txt diff --git a/Documentation/devicetree/bindings/gpio/gpio-74x164.txt b/Documentation/devicetree/bindings/gpio/gpio-74x164.txt new file mode 100644 index 0000000..e2a40a5 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-74x164.txt @@ -0,0 +1,26 @@ +* Generic 8-bits shift register GPIO driver + +Required properties: +- compatible : Should be "fairchild,74hc595" +- reg : chip select number +- gpio-controller : Marks the device node as a gpio controller. +- #gpio-cells : Should be two. The first cell is the pin number and + the second cell is used to specify the gpio polarity: + 0 = active high + 1 = active low +- register-number: Number of daisy-chained shift registers +- output-latch-gpio: GPIO connected to the output pin of the registers + +Optional properties: +- latch-active-low: If the output pin is active low + +Example: + +gpio5: gpio5@0 { + compatible = "fairchild,74hc595"; + gpio-controller; + #gpio-cells = <2>; + registers-number = <4>; + output-latch-gpio = <&gpio0 26 0>; + spi-max-frequency = <100000>; +};