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 0971EC43441 for ; Thu, 29 Nov 2018 00:27:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B78712081C for ; Thu, 29 Nov 2018 00:27:20 +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="vOsBnknw" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B78712081C 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 S1727237AbeK2Lap (ORCPT ); Thu, 29 Nov 2018 06:30:45 -0500 Received: from csm1.csm-office.com.au ([165.228.118.109]:41418 "EHLO sleepy.aussec.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726617AbeK2Lap (ORCPT ); Thu, 29 Nov 2018 06:30:45 -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 wAT0QZ3T025194 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Thu, 29 Nov 2018 11:27:03 +1100 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=aussec.com; s=2016; t=1543451224; bh=aZrgIouvOgYx+lOAVPVHPpRC2xvj+q1LNGs+mERKBj8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=vOsBnknwMHu+mZyqDjMd3srHbzgvlqlExjc5GjvG1O2+k9CkAqY1FSpT1LR6lWGXE Up8718YF9RQN27pHGJ8kmAIED37VudsmDnzpZag64qqSaaWHfZot4hs4diWgZnwAie 0BnDIaoxyb+UzQxBT4DJF62w2ZPnzS+rYP4A0x36vxbbydJLhfa3atKR5Qg7c1U2mg nGS5UWGFfZLKBS+KHHMcFyjIXr31FSzLI9KH+Wtojxx3jolHI6P6plg1WCJ/BJ8U7v azlytFyPda8BstNNRoWSnvmDiAonREIj48o5IfuYOqXsPp/2jGujiMH28oyP8h6RVt gbKy4hWsIhiIA== From: Tom Burkart To: Linux kernel mailing list Cc: Tom Burkart , devicetree@vger.kernel.org, Lukas Senger Subject: [PATCH v11 2/3] dt-bindings: pps: pps-gpio PPS ECHO implementation Date: Thu, 29 Nov 2018 11:26:25 +1100 Message-Id: <20181129002626.5410-3-tom@aussec.com> X-Mailer: git-send-email 2.12.3 In-Reply-To: <20181129002626.5410-2-tom@aussec.com> References: <20181129002626.5410-1-tom@aussec.com> <20181129002626.5410-2-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 3683874832ae..3760c271f211 100644 --- a/Documentation/devicetree/bindings/pps/pps-gpio.txt +++ b/Documentation/devicetree/bindings/pps/pps-gpio.txt @@ -7,9 +7,14 @@ 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) +- invert-pps-echo: when present, invert the PPS ECHO pulse Example: pps { @@ -19,5 +24,9 @@ Example: gpios = <&gpio1 26 GPIO_ACTIVE_HIGH>; assert-falling-edge; + echo-gpios = <&gpio1 27 GPIO_ACTIVE_HIGH>; + echo-active-ms = <100>; + invert-pps-echo; + compatible = "pps-gpio"; }; -- 2.12.3