From patchwork Tue Oct 30 21:09:12 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jae Hyun Yoo X-Patchwork-Id: 10661587 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0690C3CF1 for ; Tue, 30 Oct 2018 21:09:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EA3502A5C2 for ; Tue, 30 Oct 2018 21:09:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DE2462A5C9; Tue, 30 Oct 2018 21:09:43 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 92B2F2A5C2 for ; Tue, 30 Oct 2018 21:09:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=3meHjQckXjiq+N+LUzn6OGoZHRMyTGKJ0O+yw9qPNQI=; b=aRMXjK+jkl5IN0 6EkGIn8x2Sh2uAHGj5VgGmIea0LzlQ+qdc7ivlqyXgPbuq3Glu9+XUcKlB9cjV8lyijBVc20iB0dK Ifw/rJL99csVDpumb9H7LFzB783aEmxnUvVVsf1flCT54l0SrPraWfySvmPWWT1GZDxOa6fKO/RD2 xSwFWmdD2S8I1fdp2yfD75aBniU686vJTj3CRzkEzKpKaLsfjh28GiAurlZ8LCEEpLtRa6lRVTFrC Ud2HNzIscgz6F4KGhXERF4dWG35BD0JUCUvwM/SrZkgOjXSC0Z0cmgXEsbTRURnRAqC12v+/sBkj7 GfHTM+Sy1jbCXMdKwIqg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gHbGf-0002nb-Vd; Tue, 30 Oct 2018 21:09:41 +0000 Received: from mga04.intel.com ([192.55.52.120]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gHbGV-0002bd-G6 for linux-arm-kernel@lists.infradead.org; Tue, 30 Oct 2018 21:09:32 +0000 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 30 Oct 2018 14:09:20 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,446,1534834800"; d="scan'208";a="100110049" Received: from maru.jf.intel.com ([10.54.51.77]) by fmsmga002.fm.intel.com with ESMTP; 30 Oct 2018 14:09:21 -0700 From: Jae Hyun Yoo To: Wolfram Sang , Brendan Higgins , Rob Herring , Joel Stanley , Benjamin Herrenschmidt , Mark Rutland , Andrew Jeffery , linux-i2c@vger.kernel.org, openbmc@lists.ozlabs.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: [PATCH i2c-next v9 1/5] dt-bindings: i2c: Add 'bus-timeout-ms' and '#retries' properties as common optional Date: Tue, 30 Oct 2018 14:09:12 -0700 Message-Id: <20181030210917.32711-2-jae.hyun.yoo@linux.intel.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181030210917.32711-1-jae.hyun.yoo@linux.intel.com> References: <20181030210917.32711-1-jae.hyun.yoo@linux.intel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181030_140931_552948_D4DD5D7F X-CRM114-Status: GOOD ( 12.86 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Vernon Mauery , Jae Hyun Yoo , Jarkko Nikula , James Feist Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This commit adds 'bus-timeout-ms' and '#retries' properties as common optional properties that can be used for setting 'timeout' and 'retries' values of 'struct i2c_adapter'. With this patch, the bus timeout value and the master transfer retries count can be set through these properties at the registration time of an adapter. Still the values can be set by I2C_TIMEOUT and I2C_RETRIES ioctls on cdev at runtime too. These properties may not be supported by all drivers. However, if a driver wants to support one of them, it should adapt the bindings in this document. Signed-off-by: Jae Hyun Yoo Reviewed-by: Rob Herring --- Documentation/devicetree/bindings/i2c/i2c.txt | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt index 11263982470e..bdead91f82a4 100644 --- a/Documentation/devicetree/bindings/i2c/i2c.txt +++ b/Documentation/devicetree/bindings/i2c/i2c.txt @@ -80,6 +80,12 @@ wants to support one of the below features, it should adapt the bindings below. Names of map programmable addresses. It can contain any map needing another address than default one. +- bus-timeout-ms + Bus timeout in milliseconds. + +- #retries + Number of retries for master transfer. + Binding may contain optional "interrupts" property, describing interrupts used by the device. I2C core will assign "irq" interrupt (or the very first interrupt if not using interrupt names) as primary interrupt for the slave.