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 1E697C43441 for ; Sat, 17 Nov 2018 13:07:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D5A012077C for ; Sat, 17 Nov 2018 13:07:06 +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="UYG1B+BL" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D5A012077C 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 S1726612AbeKQXXn (ORCPT ); Sat, 17 Nov 2018 18:23:43 -0500 Received: from csm1.csm-office.com.au ([165.228.118.109]:36498 "EHLO sleepy.aussec.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726003AbeKQXXn (ORCPT ); Sat, 17 Nov 2018 18:23:43 -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 wAHD5ubp015913 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Sun, 18 Nov 2018 00:06:50 +1100 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=aussec.com; s=2016; t=1542460012; bh=GvoLStNdmblN/ljgTUrGrsbTu19DmjLOwDoKUmH3bqY=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=UYG1B+BLXelNV0YgUACtdk5gd6H2Oqzlqtr0JGbPaWIhAohb6nb5RmiHPuIIE9tlx 8Z1QQf2umeqkBsTEsIgcWe8YZg1H8Z7s6oHAycFIUKwmeRGFkS/C9axA6XsRAAaOiC /IDoV8stMAu1Yjcyh7Da/hKRR2iHGwnSY3EU7THZadzncYr4PclVYXYZ1+31rk5+Ep CqORsauYHEQd2idR6QIKwRzw189wzY0w9keTjfqMyKq6LKzoCXM4TBN8tpYKR/rxOi 34/eNsO7BiBo9A0uAON1ODCOis0LsnIiAdfLVuxdcdidJONPA3oiqrVPYWP71+93Km I8LouhnYzGvvw== From: Tom Burkart To: Linux kernel mailing list Cc: Tom Burkart , devicetree@vger.kernel.org, Lukas Senger Subject: [PATCH v8 3/4] dt-bindings: pps: pps-gpio PPS ECHO implementation Date: Sun, 18 Nov 2018 00:03:36 +1100 Message-Id: <20181117130337.5856-4-tom@aussec.com> X-Mailer: git-send-email 2.12.3 In-Reply-To: <20181117130337.5856-3-tom@aussec.com> References: <20181117130337.5856-1-tom@aussec.com> <20181117130337.5856-2-tom@aussec.com> <20181117130337.5856-3-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