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=-7.7 required=3.0 tests=DKIM_ADSP_ALL,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,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 3F58BC43441 for ; Thu, 22 Nov 2018 09:48:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F0FDA20820 for ; Thu, 22 Nov 2018 09:48:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=aussec.com header.i=@aussec.com header.b="BrfIu21o" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F0FDA20820 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=aussec.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2393620AbeKVU1j (ORCPT ); Thu, 22 Nov 2018 15:27:39 -0500 Received: from csm1.csm-office.com.au ([165.228.118.109]:34224 "EHLO sleepy.aussec.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731614AbeKVU1i (ORCPT ); Thu, 22 Nov 2018 15:27:38 -0500 X-Virus-Scanned: amavisd-new at aussec.com Received: from hpdv6.aussec.com.com (c110-21-61-29.farfl4.nsw.optusnet.com.au [110.21.61.29]) (authenticated bits=0) by sleepy.aussec.com (8.15.2/8.15.2) with ESMTPSA id wAM9mAdj030201 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Thu, 22 Nov 2018 20:48:37 +1100 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=aussec.com; s=2016; t=1542880118; bh=GvoLStNdmblN/ljgTUrGrsbTu19DmjLOwDoKUmH3bqY=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=BrfIu21o88AJ+H1MHy3+PHmPWvBqrxvJJ0Yc+M9hhPb+vt8pzcdHFHeVHufrqxotM 4I6HQHLBQFtN2Q7rLy4Sw5DUKFxxeB6gjBGzpKH1oA2NNvAdh46XIoVp9APn2AmWtV L1ghdjK8fw6z385tuexMxYN00L/hXor8kq6jo/xM7NjogTXJ6YPZXmjrug1R/MeBOx dI/dlmCBbB7vpEODSCYXapDJR+d4cPJ/CWapMq5//bL/z6/LbMjFrklHGeR1AbWfN+ GIED32FeGmCegp52Mtnp0ylFO3Ildz2az1pBk4vh6mZ3RUiLy/y3IiDjk9dYBZ/KCL GZg0hVyJEPmvQ== From: Tom Burkart To: Linux kernel mailing list Cc: Tom Burkart , devicetree@vger.kernel.org, Lukas Senger Subject: [PATCH v9 3/4] dt-bindings: pps: pps-gpio PPS ECHO implementation Date: Thu, 22 Nov 2018 20:46:01 +1100 Message-Id: <20181122094602.5156-4-tom@aussec.com> X-Mailer: git-send-email 2.12.3 In-Reply-To: <20181122094602.5156-3-tom@aussec.com> References: <20181122094602.5156-1-tom@aussec.com> <20181122094602.5156-2-tom@aussec.com> <20181122094602.5156-3-tom@aussec.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch implements the device tree changes required for the pps echo functionality for pps-gpio, that sysfs claims is available already. This patch was originally written by Lukas Senger as part of a masters thesis project and modified for inclusion into the linux kernel by Tom Burkart. Signed-off-by: Lukas Senger Signed-off-by: Tom Burkart --- Documentation/devicetree/bindings/pps/pps-gpio.txt | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/Documentation/devicetree/bindings/pps/pps-gpio.txt b/Documentation/devicetree/bindings/pps/pps-gpio.txt index 1155d49c2699..e09f6f2405c5 100644 --- a/Documentation/devicetree/bindings/pps/pps-gpio.txt +++ b/Documentation/devicetree/bindings/pps/pps-gpio.txt @@ -7,10 +7,15 @@ Required properties: - compatible: should be "pps-gpio" - gpios: one PPS GPIO in the format described by ../gpio/gpio.txt +Additional required properties for the PPS ECHO functionality: +- echo-gpios: one PPS ECHO GPIO in the format described by ../gpio/gpio.txt +- echo-active-ms: duration in ms of the active portion of the echo pulse + Optional properties: - assert-falling-edge: when present, assert is indicated by a falling edge (instead of by a rising edge) - capture-clear: when present, also capture the PPS clear event +- invert-pps-echo: when present, invert the PPS ECHO pulse Example: pps { @@ -21,5 +26,9 @@ Example: assert-falling-edge; capture-clear; + echo-gpios = <&gpio1 27 GPIO_ACTIVE_HIGH>; + echo-active-ms = <100>; + invert-pps-echo; + compatible = "pps-gpio"; }; -- 2.12.3