From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0B841C47098 for ; Sun, 30 May 2021 16:50:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E3665611EE for ; Sun, 30 May 2021 16:50:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229976AbhE3Qv4 (ORCPT ); Sun, 30 May 2021 12:51:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39998 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229933AbhE3Qvx (ORCPT ); Sun, 30 May 2021 12:51:53 -0400 Received: from mailserv1.kapsi.fi (mailserv1.kapsi.fi [IPv6:2001:67c:1be8::25:1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 63563C061761; Sun, 30 May 2021 09:50:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ext.kapsi.fi; s=20161220; h=Subject:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=sqayVbWJxMwOJbb2ISlKd5CFS46e4OV067XCFUWNdfs=; b=xCgjQ9j1j6Ds+n9uOzWGSaW1cj F4yXNfwBo04FGlpPMTLggyiy7GzHpWmLnlM7vhRf/v2PSBP9QmZMxF15SRkGY4CwInqftogSIH1Mf Xf6OaR2GNImzW7lSVjfmqTGdm+4rvWhnj6jqjlSlq11W/NfWP4nJZOG19+tbCPYp2o+vYXCb3ZRuZ hT+fsB65yBMQMXBYr59wy3lD34R/Z9Stg3NNEku7fEJ+2BdmObDgFiRbFDX3wZ49w5EPpzRBpGtg9 HjHbe+EU/WgHuiqqf3IqJpJv2jU5UAZOYgM34ObKkX++sprB5V0TiCO7h9yDkSl9c5ZyNEHVm9IlX iiEuG9ig==; Received: from 164-105-191-90.dyn.estpak.ee ([90.191.105.164]:50316 helo=localdomain) by mailserv1.kapsi.fi with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1lnO6X-0001fO-6h; Sun, 30 May 2021 19:15:58 +0300 Received: by localdomain (sSMTP sendmail emulation); Sun, 30 May 2021 19:15:53 +0300 From: Mauri Sandberg To: sandberg@mailfence.com Cc: andy.shevchenko@gmail.com, bgolaszewski@baylibre.com, geert+renesas@glider.be, linus.walleij@linaro.org, linux-gpio@vger.kernel.org, robh+dt@kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, drew@beagleboard.org, Mauri Sandberg Date: Sun, 30 May 2021 19:13:32 +0300 Message-Id: <20210530161333.3996-2-maukka@ext.kapsi.fi> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210530161333.3996-1-maukka@ext.kapsi.fi> References: <20210325122832.119147-1-sandberg@mailfence.com> <20210530161333.3996-1-maukka@ext.kapsi.fi> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 90.191.105.164 X-SA-Exim-Mail-From: maukka@ext.kapsi.fi Subject: [PATCH v4 1/2] dt-bindings: gpio-mux-input: add documentation X-SA-Exim-Version: 4.2.1 (built Tue, 02 Aug 2016 21:08:31 +0000) X-SA-Exim-Scanned: Yes (on mailserv1.kapsi.fi) Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Add documentation for a general GPIO multiplexer. Signed-off-by: Mauri Sandberg Tested-by: Drew Fustini Reviewed-by: Drew Fustini --- v3 -> v4: - Changed author email - Included Tested-by and Reviewed-by from Drew v2 -> v3: added a complete example on dual 4-way multiplexer v1 -> v2: added a little bit more text in the binding documenation --- .../bindings/gpio/gpio-mux-input.yaml | 75 +++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-mux-input.yaml diff --git a/Documentation/devicetree/bindings/gpio/gpio-mux-input.yaml b/Documentation/devicetree/bindings/gpio/gpio-mux-input.yaml new file mode 100644 index 000000000000..1ca4c3c8d64b --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-mux-input.yaml @@ -0,0 +1,75 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/gpio/gpio-mux-input.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Generic GPIO input multiplexer + +maintainers: + - Mauri Sandberg + +description: | + A generic GPIO based input multiplexer + + This driver uses a mux-controller to drive the multiplexer and has a single + output pin for reading the inputs to the mux. + + For GPIO consumer documentation see gpio.txt. + +properties: + compatible: + enum: + - gpio-mux-input + + gpio-controller: true + + '#gpio-cells': + const: 2 + + pin-gpios: + description: | + The GPIO pin used as the output from the multiplexer + +required: + - compatible + - gpio-controller + - "#gpio-cells" + - pin-gpios + +additionalProperties: false + +examples: + - | + #include + mux: mux-controller { + compatible = "gpio-mux"; + #mux-control-cells = <0>; + + mux-gpios = <&gpio 9 GPIO_ACTIVE_HIGH>, + <&gpio 11 GPIO_ACTIVE_HIGH>; + }; + + gpio2: key-mux1 { + compatible = "gpio-mux-input"; + mux-controls = <&mux>; + + gpio-controller; + #gpio-cells = <2>; + + // GPIOs used by this node, mux pin + pin-gpios = <&gpio 12 GPIO_ACTIVE_HIGH>; + }; + + gpio3: key-mux2 { + compatible = "gpio-mux-input"; + mux-controls = <&mux>; + + gpio-controller; + #gpio-cells = <2>; + + // GPIOs used by this node, mux pin + pin-gpios = <&gpio 14 GPIO_ACTIVE_HIGH>; + }; + +... -- 2.25.1