From patchwork Tue Apr 2 06:30:43 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: William Breathitt Gray X-Patchwork-Id: 1073903 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="TvtU31Ws"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44YK9d6WBhz9sTQ for ; Tue, 2 Apr 2019 17:31:33 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728911AbfDBGbd (ORCPT ); Tue, 2 Apr 2019 02:31:33 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:42033 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726690AbfDBGbd (ORCPT ); Tue, 2 Apr 2019 02:31:33 -0400 Received: by mail-pf1-f193.google.com with SMTP id r15so5814969pfn.9; Mon, 01 Apr 2019 23:31:32 -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 :mime-version:content-transfer-encoding; bh=ADfhP5zjUuDjSW2hB90EQKoYLSBhq+Id1FV/2cN0vlY=; b=TvtU31Wsh2zQ/3Nh5ZDWzgedo0YgcJM73Oap3izPnwHvdW/8iC4VOTHiyrJwtlIwwX cMxP8ilL+xbsKv7pDHkGWg4cO7AAicDftKinlUH5/9JCqWjTS55bbtf8f03zI54TBDSL QNSjdqkYARq+a+aC7YNeuLTgd7GXX6xg8isXClJo+9TAJcQuXBX+5RT37jzSuTiAX5dm 4V3GZL+OtPanqMb9DARiEEgt0CBNGKy2xZQgsB5k/5s4EdBovly0TOmDHLCXPbVGK1UF 2olKuS0Zf+IGrhYm29qKTFogkg4dD7QP7Fy7lcpKCSjkzklnwK+YLYO8dC5Ugf+eDEjL Magw== 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:mime-version:content-transfer-encoding; bh=ADfhP5zjUuDjSW2hB90EQKoYLSBhq+Id1FV/2cN0vlY=; b=t32Yul+mNT0A9gdDjJ2yH5DUG2/0cgQ7z35F0IEe8/exwTOq+/WrvvTFnIPOorIL43 JgXe6dp7i8h36t/hDskpBuoHqxnvpAdAZjMkceUDl9AxGIT3RpIQOiA+r4TamvBW8exJ w2m/HaYsc22qOCFhoUto0jqoGlU3cXeOkri5ENzSh0y+TM0Azl6hLgWDbgsEkfamZu2/ csZptJsjUB/PYzz2ybyETpFf6tcEtI3C6JmBHzG4Yhm+GOiqShSEfuCL/U9DW3iBhNSK J1ENP8Nkmaea03/bw3VrEgvxeqs1BFW7HfCTKdsMjAyLk0NwpFYyobBIUWEzQ9O/+Sz3 bvRw== X-Gm-Message-State: APjAAAUGx4O9IoZEcxU7t3ZZlr33uVpEWMEuAY1ACIqTfUNx5GZ6iCYG 30kq59VRhCk/Oi0WQjhE4bo= X-Google-Smtp-Source: APXvYqzbMDztJcOdNTyqzRYMbCs9hmjnd9YghZAZYSsUUdk+HZF7IfKegX2wxDi3hfqMSXoW+n9tRw== X-Received: by 2002:a62:ac02:: with SMTP id v2mr26546282pfe.163.1554186692246; Mon, 01 Apr 2019 23:31:32 -0700 (PDT) Received: from localhost.localdomain ([2001:268:c0a5:4ce0:c70:4af9:86e2:2]) by smtp.gmail.com with ESMTPSA id a17sm19327289pfj.123.2019.04.01.23.31.22 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 01 Apr 2019 23:31:31 -0700 (PDT) From: William Breathitt Gray To: gregkh@linuxfoundation.org Cc: jic23@kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, fabrice.gasnier@st.com, benjamin.gaignard@st.com, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, akpm@linux-foundation.org, david@lechnology.com, robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org, leoyang.li@nxp.com, daniel.lezcano@linaro.org, tglx@linutronix.de, thierry.reding@gmail.com, esben@haabendal.dk, linux-pwm@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, patrick.havelange@essensium.com, Rob Herring , William Breathitt Gray Subject: [PATCH v10 08/18] dt-bindings: counter: Document stm32 quadrature encoder Date: Tue, 2 Apr 2019 15:30:43 +0900 Message-Id: X-Mailer: git-send-email 2.21.0 In-Reply-To: References: MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org 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: