Received: by 2002:a05:6a10:a0d1:0:0:0:0 with SMTP id j17csp186697pxa; Tue, 4 Aug 2020 03:03:35 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwp0Fh/1CCfJeiyLMi7ykiT5upI89J03l47f7zMkyHlfvJxhFoF/4XR1LYo2q69+HQurCjb X-Received: by 2002:a50:fb94:: with SMTP id e20mr20002084edq.103.1596535415086; Tue, 04 Aug 2020 03:03:35 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1596535415; cv=none; d=google.com; s=arc-20160816; b=D2rAdVFSwaCw1grwdenxeSsNSa+WTmIY77SkkxMsW7G4r8bdM/O6xDw8kFwSUABaOx q3bC3bep3h7oEXEyt4YS1URON7v+qpC5hrPRp+PWPiXk2EhRHTVHbK3Z18lt2Fv6+GFq qfyIgAzSV1W+hnOsqZfewpow2WCNchRz214pTR4CN5Gt+YYM+jBnAygxAqJC+WwuNV7h vfDJd7gBF2js6/jdxZWAcJzLRdeAkB4z2AuXywBaa0gr5Zed7aZSq61nge2kc/UQM8/H 1hoPe43S0FI2ayGz4KxKah4uTGLz9P7+JToRx+F8Y++of9oGRF3EiGYqOEcNiIUwNvNI i1EA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :ironport-sdr:dkim-signature; bh=km5TGrg7WGYcxcCv16hj41KmEdfvDws0z1xTe9IFTLM=; b=uCCc7WNaNV7kh497Si3h4el7T/5wLkkOwYV7bQiunqr7sMrRLaMlwuZzlK/DnBQWXo +L254AeUzWxDTtJ9gDiVlZV5O+wD18UUjngN6uJCBI2IXSUmVsXcqIY1LWHB/4tH5Pk3 kJZykfgY6Z6YYWHb8fap1/sLFVQpD9C5rl19kmKLEoVg9PIxWlzv7FDtpMBg1a2cDho2 Ft82jO8X3CzPmOkJZzEL2qoqE1tSv6kBlsJDKrbNpkBFakBJ4XHg6UtyR8zXm03CzKpz PE25nPgm6nIZt6MBTNDmJLV+grXJFTlDM6082AY5Vx4b3EtlIE+4aGnP7mX7T3y+m1Pd 8ZfA== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail header.i=@microchip.com header.s=mchp header.b=aoiA1nie; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=microchip.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id y19si2049647ejw.738.2020.08.04.03.03.12; Tue, 04 Aug 2020 03:03:35 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=fail header.i=@microchip.com header.s=mchp header.b=aoiA1nie; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=microchip.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729857AbgHDKAV (ORCPT + 99 others); Tue, 4 Aug 2020 06:00:21 -0400 Received: from esa3.microchip.iphmx.com ([68.232.153.233]:33043 "EHLO esa3.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726844AbgHDKAU (ORCPT ); Tue, 4 Aug 2020 06:00:20 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1596535220; x=1628071220; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=9iPc+xgooR96zu6gZSvzswYQ4P1VQbTGDAAFAk2BvHg=; b=aoiA1niebva4yztk7RI0oQMzjB6ZFA7QivcPdNLphbtvLhWOxJw5kXbI gypa4+tmgK2c2YL827dB56SHil2Cr2AkJ7RcWWdOUvHeA85Gpq9pUtzf9 9RqRO+b7c9xew1W7gzRU7KKkHG3lQ1DTAd0bTqsPN4x82wwI+doHMsTZM ipq+2HUGDuu+Jihhe0GMBX8Ip854cMC6u0Yz+k2Z+nfDLFor7pTshXPii 3H+cyqdbvWYxxON/0erZfyiJ1mdu6ABpi5We4rmBOOZRyQWJg/B9x7Koy lNVy/0Wqsj5GEnNQ6fPGmyNVxSXN/teZbdySmYtqlnISCncsMTKlsvmp8 g==; IronPort-SDR: Tn2DDWu0R9LqOqTqxSOTUEklWa8eCPMV8mwo0EszfQ+p8hwxQDS7gntspOFg1uPIp+xScgDMyc jtgSewwVObKQcfuUVUjakGwcp++ZWmP7rrg6WivPklx5c4XVjksXTPj0VVv4gWC3vLJHTEOY3X S7cLV9QHLuw93jsvHNbv1U/nA3Nqg1g4Xq+s+Z0RiX1k1hK0k7gHHG1+OXD9sRXK7pvUASnM42 xONQPAS7mIztE2hmr+rCqkENMcinVwI5bWIhhCMQpCWcmK5vUHh3bc084sZArY5wleO3+nwJaN XqY= X-IronPort-AV: E=Sophos;i="5.75,433,1589266800"; d="scan'208";a="86620321" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa3.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 04 Aug 2020 03:00:19 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.87.72) by chn-vm-ex02.mchp-main.com (10.10.87.72) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Tue, 4 Aug 2020 03:00:17 -0700 Received: from rob-ult-m19940.microchip.com (10.10.115.15) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.1979.3 via Frontend Transport; Tue, 4 Aug 2020 02:59:46 -0700 From: Codrin Ciubotariu To: , , , CC: , , , , , , , Codrin Ciubotariu Subject: [PATCH 1/4] dt-binding: i2c: add generic properties for GPIO bus recovery Date: Tue, 4 Aug 2020 12:59:23 +0300 Message-ID: <20200804095926.205643-2-codrin.ciubotariu@microchip.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200804095926.205643-1-codrin.ciubotariu@microchip.com> References: <20200804095926.205643-1-codrin.ciubotariu@microchip.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The I2C GPIO bus recovery properties consist of two GPIOS and one extra pinctrl state ("gpio" or "recovery"). "recovery" pinctrl state is considered deprecated and "gpio" should be used instead. Not all are mandatory for recovery. Signed-off-by: Codrin Ciubotariu --- Changes from RFC: - "recovery" pinctrl state marked as deprecated; updated description to reflect this; Documentation/devicetree/bindings/i2c/i2c.txt | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt index 438ae123107e..150a67da633d 100644 --- a/Documentation/devicetree/bindings/i2c/i2c.txt +++ b/Documentation/devicetree/bindings/i2c/i2c.txt @@ -77,6 +77,16 @@ wants to support one of the below features, it should adapt these bindings. this information to detect a stalled bus more reliably, for example. Can not be combined with 'multi-master'. +- scl-gpios + specify the gpio related to SCL pin. Used for GPIO bus recovery. + +- sda-gpios + specify the gpio related to SDA pin. Optional for GPIO bus recovery. + +- pinctrl + add extra pinctrl to configure SCL/SDA pins to GPIO function for bus + recovery, call it "gpio" or "recovery"(deprecated) state + Required properties (per child device) -------------------------------------- -- 2.25.1