From patchwork Sun Jul 22 22:51:34 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: William Breathitt Gray X-Patchwork-Id: 10539473 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 952A7157A for ; Sun, 22 Jul 2018 22:52:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7243E28434 for ; Sun, 22 Jul 2018 22:52:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6462728451; Sun, 22 Jul 2018 22:52:43 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FREEMAIL_FROM,MAILING_LIST_MULTI autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 1694628434 for ; Sun, 22 Jul 2018 22:52:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=XrtHwSUmSsVX22V8V7XqLJnLjkXdMAinSvC7Ksa3CgE=; b=egwRrgM1Hr+Ii/Q8yUArA6/tkT krnNXBgqq88xggwhpFxgPxgNJVYpkWoreX99k+m1H/+DII17lSQmDGtVG6iAO6EIlHC7oDhdIdyg2 nQ3dvRRWe/aWLQXiGr2j4Tw0E8y7zMz3mG3ZSZWlPmHW77Svc5BWl2/ZC1FIS7lKv3cgyjZpyMn1q RCaHlX9wBbCiITUPKygbT2ubXMEeE0yUbwL3QQYIV2xL7/RlCZbHz1rCPaLRzqeHz/q8FWPlbwDij L4bVTtFkhmfipMuzN/j0aMlWsKWeTEbFNmj7+jG/NWruzLuZoJRHoZH7xofN2jdxsbJBPlwJnF27C UrYpNLfQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fhNDR-0007B1-Jd; Sun, 22 Jul 2018 22:52:37 +0000 Received: from mail-yw0-f193.google.com ([209.85.161.193]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fhNCh-0006XP-K2 for linux-arm-kernel@lists.infradead.org; Sun, 22 Jul 2018 22:52:09 +0000 Received: by mail-yw0-f193.google.com with SMTP id q129-v6so6209210ywg.8 for ; Sun, 22 Jul 2018 15:51:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=MaXwu3UiExrAZ5ralFaJKzkH6lxMbT4Gv5yXmL2FJ2o=; b=UdaNvdjApjw+V6ajjzIQVmCVphWhC/WfTPFm5IO0a0xXjz7QH5IHol7w+v18HREywy o7vKJe77ITvZB4WAJBfcyM2UzNI2Q32TJ8N7Oo9CwFyF9LiwG1S95v8wr3x2MuZ3mQ7R kQGRwncHV45lZEJAeXq6cHR6Fiy78OLMEqQ+Psdi9xW/f3z/cJax0hwINChN19p1+Ma4 k3RnX2b/RBfCIjjYJyVA0QJSm5Kz+LsBkaQ4qoh3mLkEbo64Gkwj19rn68f3F/qvIzyM Lk3Wz8ufBQBTrK5/ag74sVv11l/Hb0uVL0wGPW0WYdq2nq9WsOi7PeFlhGLlFGwrmaVi cezQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=MaXwu3UiExrAZ5ralFaJKzkH6lxMbT4Gv5yXmL2FJ2o=; b=Xz5RjQ5SMAbmkQZjAfTFvwZB7GF9cV/60yljtYsDpoex64qW+FOgQMdSP1XuTaWjCa TlMmA2cTabgPWkTdiufX+pd/oMTRknzyaSA8TA/jjDKW1c+0E7YSjbW5nMFe31R+RppZ k6/Y8CRgO7QM185xdYkH4GYC5Fce+5OZOziNJ6OK66vBi8HDo8NTSKFb+KTZPbFXMg8V APwzq0fIBKwICuXy1waqeOmRDiFyg13DkvagXuS6UF1W4IkXcYM4YfOi3cp1TLB6sjD6 q48WfQEUMdfzEh0khgbjJY3PaO91iLk6W3Vpd7vNSSrvNQ+3cglV09Y0WnchXOxOxCY0 nv1w== X-Gm-Message-State: AOUpUlGRGYjUTUPli3Hyy8CNbMMZOzmmF5FCpJJ5twwLLLfJD8U0s/xJ I/2f1QQtpLMvjNTD2hDcOBA= X-Google-Smtp-Source: AAOMgpfW2IkSl5mpNUzYpnkxboHkbBViwTzulTocgbhi4h9GV+RoAb4wZRREP8I41hhIt+a0hdhshw== X-Received: by 2002:a81:7050:: with SMTP id l77-v6mr5660933ywc.226.1532299900328; Sun, 22 Jul 2018 15:51:40 -0700 (PDT) Received: from localhost ([72.188.97.40]) by smtp.gmail.com with ESMTPSA id 139-v6sm933716ywk.41.2018.07.22.15.51.39 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 22 Jul 2018 15:51:39 -0700 (PDT) From: William Breathitt Gray To: gregkh@linuxfoundation.org Subject: [PATCH v9 08/11] dt-bindings: counter: Document stm32 quadrature encoder Date: Sun, 22 Jul 2018 18:51:34 -0400 Message-Id: <7e5b0d84eb64a9f11770bb9734f8303ebf6f7178.1532298882.git.vilhelm.gray@gmail.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: References: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180722_155151_917388_48DB9B1D X-CRM114-Status: GOOD ( 12.84 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, lars@metafoo.de, benjamin.gaignard@st.com, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, William Breathitt Gray , jic23@kernel.org, pmeerw@pmeerw.net, knaack.h@gmx.de, akpm@linux-foundation.org, fabrice.gasnier@st.com, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Benjamin Gaignard Add bindings for STM32 Timer quadrature encoder. It is a sub-node of STM32 Timer which implement the quadratic encoder part of the hardware. Cc: Mark Rutland Signed-off-by: Benjamin Gaignard Acked-by: Rob Herring Signed-off-by: William Breathitt Gray --- .../bindings/counter/stm32-timer-cnt.txt | 31 +++++++++++++++++++ .../devicetree/bindings/mfd/stm32-timers.txt | 7 +++++ 2 files changed, 38 insertions(+) create mode 100644 Documentation/devicetree/bindings/counter/stm32-timer-cnt.txt diff --git a/Documentation/devicetree/bindings/counter/stm32-timer-cnt.txt b/Documentation/devicetree/bindings/counter/stm32-timer-cnt.txt new file mode 100644 index 000000000000..c52fcdd4bf6c --- /dev/null +++ b/Documentation/devicetree/bindings/counter/stm32-timer-cnt.txt @@ -0,0 +1,31 @@ +STMicroelectronics STM32 Timer quadrature encoder + +STM32 Timer provides quadrature encoder to detect +angular position and direction of rotary elements, +from IN1 and IN2 input signals. + +Must be a sub-node of an STM32 Timer device tree node. +See ../mfd/stm32-timers.txt for details about the parent node. + +Required properties: +- compatible: Must be "st,stm32-timer-counter". +- pinctrl-names: Set to "default". +- pinctrl-0: List of phandles pointing to pin configuration nodes, + to set CH1/CH2 pins in mode of operation for STM32 + Timer input on external pin. + +Example: + timers@40010000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "st,stm32-timers"; + reg = <0x40010000 0x400>; + clocks = <&rcc 0 160>; + clock-names = "int"; + + counter { + compatible = "st,stm32-timer-counter"; + pinctrl-names = "default"; + pinctrl-0 = <&tim1_in_pins>; + }; + }; diff --git a/Documentation/devicetree/bindings/mfd/stm32-timers.txt b/Documentation/devicetree/bindings/mfd/stm32-timers.txt index 0e900b52e895..15c3b87f51d9 100644 --- a/Documentation/devicetree/bindings/mfd/stm32-timers.txt +++ b/Documentation/devicetree/bindings/mfd/stm32-timers.txt @@ -28,6 +28,7 @@ Optional parameters: Optional subnodes: - pwm: See ../pwm/pwm-stm32.txt - timer: See ../iio/timer/stm32-timer-trigger.txt +- counter: See ../counter/stm32-timer-cnt.txt Example: timers@40010000 { @@ -48,6 +49,12 @@ Example: compatible = "st,stm32-timer-trigger"; reg = <0>; }; + + counter { + compatible = "st,stm32-timer-counter"; + pinctrl-names = "default"; + pinctrl-0 = <&tim1_in_pins>; + }; }; Example with all dmas: