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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3C7E6C3ABC3 for ; Mon, 12 May 2025 10:10:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:References :In-Reply-To:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=BCdl4OAkK4XopzC0ivLJ4/FEWksjWSX6WJdfbmjDHzw=; b=DlE99NZlL14RoI TH/T2edOZu1nFem8bihTOY+T3i1gongEEPA+lXTUXe+OFcNQSwxzBUpiRsJa518d+njEaVrX1ywod cL6a6viJmulEFnQI8JXQeVs341WVo3t/9nOvyd9+IgQGzhDOyBPzxD4ghgkNYmzw8DWG3BvoUNe+/ cBOcxxtxr+eb7bSjBLlWCumbqWnAg/+Jx0AWqOXcuCLLmQlWxXOZMmT4BcopIQYtGCrA0xL84A/we nRp3IP2b5p2OIFFPXnKEOcsavrtzQqJyqchjc07uvOTG1xAa1aUi0pnOHM5hyp9e6+GSxl1dz3b56 tMXMf2FpTPjDWqYGWGZw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uEQ7L-0000000945L-4AZz; Mon, 12 May 2025 10:10:39 +0000 Received: from relay6-d.mail.gandi.net ([2001:4b98:dc4:8::226]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uEPPW-00000008vAg-05k7 for linux-i3c@lists.infradead.org; Mon, 12 May 2025 09:25:23 +0000 Received: by mail.gandi.net (Postfix) with ESMTPSA id C8ED743284; Mon, 12 May 2025 09:25:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1747041918; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=OLSHO2Ibs2uoIHZrl9Xn5cSfahZ7tkgcZIzEwxzVdy4=; b=oM8oOPXdDFoFnYhlHrGrcIe4CG/Ex8eoF29mMpTzDa4skMFmN0wxKB9InrYu0A2XX5kISl IdqwbEeqroNrcN3vwnXjqC3FdPTwcDeWfszZ2jyK6vuFvi0ySKsjFklBXL3Z85xbIRcaQz 9fdOPyuALkEEK0sX81UP0Fr+yWf11p0RM/95lQ8PC0UFTetPReRsHX4vzDdsAheyLjqmrg gYBmJ3H06k6HsW9VAOl6DpBxf0gwr+ub8dvIe2eaWcJHrTY1ni9wpL62lxudV4RTwtaq+n ZL2OmAiMPKplVLAImdwI9QqBS/D3amh9wBr6qJRJSz17oLUQZf4qTXw9flfs5g== From: Miquel Raynal To: Frank Li Cc: Alexandre Belloni , linux-i3c@lists.infradead.org (moderated list:SILVACO I3C DUAL-ROLE MASTER), imx@lists.linux.dev (open list:SILVACO I3C DUAL-ROLE MASTER), linux-kernel@vger.kernel.org (open list) Subject: Re: [PATCH v2 1/1] i3c: master: svc: skip address resend on repeat START In-Reply-To: <20250429054234.4013929-1-Frank.Li@nxp.com> (Frank Li's message of "Tue, 29 Apr 2025 01:42:34 -0400") References: <20250429054234.4013929-1-Frank.Li@nxp.com> User-Agent: mu4e 1.12.7; emacs 29.4 Date: Mon, 12 May 2025 11:25:16 +0200 Message-ID: <877c2mmb9f.fsf@bootlin.com> MIME-Version: 1.0 X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgdeftddtkeelucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufgjfhgffffkgggtsehttdertddtredtnecuhfhrohhmpefoihhquhgvlhcutfgrhihnrghluceomhhiqhhuvghlrdhrrgihnhgrlhessghoohhtlhhinhdrtghomheqnecuggftrfgrthhtvghrnhephfelkedvveffleeuhfeigfdvvefhgfejgffghfeiteegteeiudegfedtjeehkeefnecukfhppeeltddrkeelrdduieefrdduvdejnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepledtrdekledrudeifedruddvjedphhgvlhhopehlohgtrghlhhhoshhtpdhmrghilhhfrhhomhepmhhiqhhuvghlrdhrrgihnhgrlhessghoohhtlhhinhdrtghomhdpnhgspghrtghpthhtohephedprhgtphhtthhopefhrhgrnhhkrdfnihesnhigphdrtghomhdprhgtphhtthhopegrlhgvgigrnhgurhgvrdgsvghllhhonhhisegsohhothhlihhnrdgtohhmpdhrtghpthhtoheplhhinhhugidqiheftgeslhhishhtshdrihhnfhhrrgguvggrugdrohhrghdprhgtphhtthhopehimhigsehlihhsthhsrdhlihhnuhigrdguvghvpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrk hgvrhhnvghlrdhorhhg X-GND-Sasl: miquel.raynal@bootlin.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250512_022522_204588_0CA8EDEF X-CRM114-Status: UNSURE ( 5.47 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org On 29/04/2025 at 01:42:34 -04, Frank Li wrote: > According to the I3C specification, address arbitration only happens during > the START. Repeated START do not initiate arbitration, and In-Band > Interrupts (IBIs) cannot occur at this stage. > > Resending the address upon a NACK in a repeat START is therefore redundant > and unnecessary. Avoid redundant retries, improving efficiency and ensuring > protocol compliance. > > Signed-off-by: Frank Li > --- Reviewed-by: Miquel Raynal -- linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c